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Merging 4.1 into 5.0

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pem@mysql.com 2003-02-18 15:05:35 +01:00
commit 97dc6a528e
58 changed files with 3702 additions and 106 deletions
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19
BitKeeper/triggers/post-commit
View File

@ -6,6 +6,7 @@ FROM=$USER@mysql.com
INTERNALS=internals@lists.mysql.com
DOCS=docs-commit@mysql.com
LIMIT=10000
REPOV=5.0
if [ "$REAL_EMAIL" = "" ]
then
@ -27,15 +28,15 @@ CHANGESET=`bk -R prs -r+ -h -d':I:' ChangeSet`
echo "Commit successful, notifying developers at $TO"
(
cat <<EOF
List-ID: <bk.mysql-4.1>
List-ID: <bk.mysql-$REPOV>
From: $FROM
To: $TO
Subject: bk commit - 4.1 tree ($CHANGESET)
Subject: bk commit - $REPOV tree ($CHANGESET)
EOF
bk changes -v -r+
bk cset -r+ -d
) | head -n $LIMIT | /usr/sbin/sendmail -t
) | /usr/sbin/sendmail -t
#++
# internals@ mail
@ -43,13 +44,13 @@ EOF
echo "Notifying internals list at $INTERNALS"
(
cat <<EOF
List-ID: <bk.mysql-4.1>
List-ID: <bk.mysql-$REPOV>
From: $FROM
To: $INTERNALS
Subject: bk commit into 4.1 tree ($CHANGESET)
Subject: bk commit into $REPOV tree ($CHANGESET)
Below is the list of changes that have just been committed into a local
4.1 repository of $USER. When $USER does a push these changes will
$REPOV repository of $USER. When $USER does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
@ -70,15 +71,15 @@ EOF
echo "Notifying docs list at $DOCS"
(
cat <<EOF
List-ID: <bk.mysql-4.1>
List-ID: <bk.mysql-$REPOV>
From: $FROM
To: $DOCS
Subject: bk commit - 4.1 tree (Manual) ($CHANGESET)
Subject: bk commit - $REPOV tree (Manual) ($CHANGESET)
EOF
bk changes -v -r+
bk cset -r+ -d
) | head -n $LIMIT | /usr/sbin/sendmail -t
) | /usr/sbin/sendmail -t
fi
else

501
Docs/sp-imp-spec.txt Normal file
View File

@ -0,0 +1,501 @@
Implementation specification for Stored Procedures
==================================================
This is a first draft, only covering the basics for parsing, creating, and
calling a PROCEDURE.
- How parsing and execution of queries work
In order to execute a query, the function sql_parse.cc:mysql_parse() is
called, which in turn calls the parser (yyparse()) with an updated Lex
structure as the result. mysql_parse() then calls mysql_execute_command()
which dispatches on the command code (in Lex) to the corresponding code for
executing that particular query.
There are thre structures involved in the execution of a query which are of
interest to the stored procedure implementation:
- Lex (mentioned above) is the "compiled" query, that is the output from
the parser and what is then interpreted to do the actual work.
It constains an enum value (sql_command) which is the query type, and
all the data collected by the parser needed for the execution (table
names, fields, values, etc).
- THD is the "run-time" state of a connection, containing all that is
needed for a particular client connection, and, among other things, the
Lex structure currently being executed.
- Item_*: During parsing, all data is translated into "items", objects of
the subclasses of "Item", such as Item_int, Item_real, Item_string, etc,
for basic datatypes, and also various more specialized Item types for
expressions to be evaluated (Item_func objects).
- How to fit Stored Procedure into this scheme
- An overview of the classes and files for stored procedures
(More detailed APIs at the end of this file)
- class sp_head (sp_head.{cc,h})
This contains, among other things, an array of "instructions" and the
method for executing the procedure.
- class sp_pcontext (sp_pcontext.{cc,h}
This is the parse context for the procedure. It's primarily used during
parsing to keep track of local parameters, variables and labels, but
it's also used at CALL time do find parameters mode (IN, OUT or INOUT)
and type when setting up the runtime context.
- class sp_instr (sp_head.{cc,h})
This is the base class for "instructions", that is, what is generated
by the parser. It turns out that we only need 4 different sub classes:
- sp_instr_stmt
Execute a statement. This is the "call-out" any normal SQL statement,
like a SELECT, INSERT etc. It contains the Lex structure for the
statement in question.
- sp_instr_set
Set the value of a local variable (or parameter)
- sp_instr_jump
An unconditional jump.
- sp_instr_jump_if_not
Jump if condition is not true. It turns out that the negative test is
most convenient when generating the code for the flow control
constructs.
- class sp_rcontext (sp_rcontext.h)
This is the runtime context in the THD structure.
It contains an array of items, the parameters and local variables for
the currently executing stored procedure.
This means that variable value lookup is in runtime is constant time,
a simple index operation.
- class Item_splocal (Item.{cc,h})
This is a subclass of Item. Its sole purpose is to hide the fact that
the real Item is actually in the current frame (runtime context).
It contains the frame offset and defers all methods to the real Item
in the frame. This is what the parser generates for local variables.
- Utility functions (sp.{cc,h})
This contains functions for creating, dropping and finding a stored
procedure in the mysql.proc table (or internal cache, when it is
implemented).
- Parsing CREATE PROCEDURE ...
When parsing a CREATE PROCEDURE the parser first initializes the
sphead and spcont (runtime context) fields in the Lex.
The sql_command code for the result of parsing a is
SQLCOM_CREATE_PROCEDURE.
The parsing of the parameter list and body is relatively
straight-forward:
- Parameters:
name, type and mode (IN/OUT/INOUT) is pushed to spcont
- Declared local variables:
Same as parameters (mode is then IN)
- Local Variable references:
If an identifier is found in in spcont, an Item_splocal is created
with the variable's frame index, otherwise an Item_field or Item_ref
is created (as before).
- Statements:
The Lex in THD is replaced by a new Lex structure and the statement,
is parsed as usual. A sp_instr_stmt is created, containing the new
Lex, and added to added to the instructions in sphead.
Afterwards, the procedure's Lex is restored in THD.
- SET var:
Setting a local variable generates a sp_instr_set instruction,
containing the variable's frame offset, the expression (an Item),
and the type.
- Flow control:
Flow control constructs like, IF, WHILE, etc, generate a conditional
and unconditional jumps in the "obvious" way, but a few notes may
be required:
- Forward jumps: When jumping forward, the exact destination is not
known at the time of the creation of the jump instruction. The
sphead therefore contains list of instruction-label pairs for
each forward reference. When the position later is known, the
instructions in the list are updated with the correct location.
- Loop constructs have optional labels. If a loop doesn't have a
label, an anonymous label is generated to simplify the parsing.
- There are two types of CASE. The "simple" case is implemented
with an anonymous variable bound to the value to be tested.
- An example
Parsing the procedure:
create procedure a(s char(16))
begin
declare x int;
set x = 3;
while x > 0 do
set x = x-1;
insert into db.tab values (x, s);
end while
end
would generate the following structures:
______
thd: | | _________
| lex -+--->| | ___________________
|______| | spcont -+------------------->| "s",in,char(16):0 |
| sphead -+------ |("x",in,int :1)|
|_________| | |___________________|
____V__________________
| m_name: "a" |
| m_defstr: "create ..."|
| m_instr: ... |
|_______________________|
Note that the contents of the spcont is changing during the parsing,
at all times reflecting the state of the would-be runtime frame.
The m_instr is an array of instructions:
Pos. Instruction
0 sp_instr_set(1, '3')
1 sp_instr_jump_if_not(5, 'x>0')
2 sp_instr_set(1, 'x-1')
3 sp_instr_stmt('insert into ...')
4 sp_instr_jump(1)
5 <end>
Here, '3', 'x>0', etc, represent the Items or Lex for the respective
expressions or statements.
- Parsing CREATE FUNCTION ...
Creating a functions is essensially the same thing as for a PROCEDURE,
with the addition that a FUNCTION has a return type and a RETURN
statement, but no OUT or INOUT parameters.
[QQ - More details here; sp_head needs a result slot and a type flag
indicating if it's a function or procedure]
- Storing, caching, dropping...
As seen above, the entired definition string, including the "CREATE
PROCEDURE" (or "FUNCTION") is kept. The procedure definition string is
stored in the table mysql.proc with the name and type as the key, the
type being one of the enum ("procedure","function").
A PROCEDURE is just stored int the mysql.proc table. A FUNCTION has an
additional requirement. They will be called in expressions with the same
syntax as UDFs, so UDFs and stored FUNCTIONs share the namespace. Thus,
we must make sure that we do not have UDFs and FUNCTIONs with the same
name (even if they are storded in different places).
This means that we can reparse the procedure as many time as we want.
The first time, the resulting Lex is used to store the procedure in
the database (using the function sp.c:sp_create_procedure()).
The simplest way would be to just leave it at that, and re-read the
procedure from the database each time it is called. (And in fact, that's
the way the earliest implementation will work.)
However, this is not very efficient, and we can do better. The full
implementation should work like this:
1) Upon creation time, parse and store the procedure. Note that we still
need to parse it to catch syntax errors, but we can't check if called
procedures exists for instance.
2) Upon first CALL, read from the database, parse it, and cache the
resulting Lex in memory. This time we can do more error checking.
3) Upon subsequent CALLs, use the cached Lex.
Note that this implies that the Lex structure with its sphead must be
reentrant, that is, reusable and shareable between different threads
and calls. The runtime state for a procedure is kept in the sp_rcontext
in THD.
The mechanisms of storing, finding, and dropping procedures are
encapsulated in the files sp.{cc,h}.
- CALLing a procedure
A CALL is parsed just like any statement. The resulting Lex has the
sql_command SQLCOM_CALL, the procedure's name and the parameters are
pushed to the Lex' value_list.
sql_parse.cc:mysql_execute_command() then uses sp.cc:sp_find() to
get the sp_head for the procedure (which may have been read from the
database or feetched from the in-memory cache) and calls the sp_head's
method execute().
Note: It's important that substatements called by the procedure do not
do send_ok(). Fortunately, there is a flag in THD->net to disable
this during CALLs. If a substatement fails, it will however send
an error back to the client, so the CALL mechanism must return
immediately and without sending an error.
The sp_head::execute() method works as follows:
1) Keep a pointer to the old runtime context in THD (if any)
2) Create a new runtime context. The information about the required size
is in sp_head's parse time context.
3) Push each parameter (from the CALL's Lex->value_list) to the new
context. If it's an OUT or INOUT parameter, the parameter's offset
in the caller's frame is set in the new context as well.
4) For each instruction, call its execute() method.
The result is a pointer to the next instruction to execute (or NULL)
if an error occured.
5) On success, set the new values of the OUT and INOUT parameters in
the caller's frame.
- Evaluating Items
There are three occasions where we need to evaluate an expression:
- When SETing a variable
- When CALLing a procedure
- When testing an expression for a branch (in IF, WHILE, etc)
The semantics in stored procedures is "call-by-value", so we have to
evaluate any "func" Items at the point of the CALL or SET, otherwise
we would get a kind of "lazy" evaluation with unexpected results with
respect to OUT parameters for instance.
For this the support function, sp_head.cc:eval_func_item() is needed.
- Calling a FUNCTION
Functions don't have an explicit call keyword like procedures. Instead,
they appear in expressions with the conventional syntax "fun(arg, ...)".
The problem is that we already have User Defined Functions (UDFs) which
are called the same way. A UDF is detected by the lexical analyzer (not
the parser!), in the find_keyword() function, and returns a UDF_*_FUNC
or UDA_*_SUM token with the udf_func object as the yylval.
So, stored functions must be handled in a simpilar way, and as a
consequence, UDFs and functions must not have the same name.
[QQ - Details of how function calls works here]
- Parsing DROP PROCEDURE/FUNCTION
The procedure name is pushed to Lex->value_list.
The sql_command code for the result of parsing a is
SQLCOM_DROP_PROCEDURE/SQLCOM_DROP_FUNCTION.
Dropping is done by simply getting the procedure with the sp_find()
function and calling sp_drop() (both in sp.{cc,h}).
- Class and function APIs
- The parser context: sp_pcontext.h
typedef enum
{
sp_param_in,
sp_param_out,
sp_param_inout
} sp_param_mode_t;
typedef struct
{
Item_string *name;
enum enum_field_types type;
sp_param_mode_t mode;
uint offset; // Offset in current frame
my_bool isset;
} sp_pvar_t;
class sp_pcontext
{
sp_pcontext();
// Return the maximum frame size
uint max_framesize();
// Return the current frame size
uint current_framesize();
// Return the number of parameters
uint params();
// Set the number of parameters to the current frame size
void set_params();
// Set type of the variable at offset 'i' in the frame
void set_type(uint i, enum enum_field_types type);
// Mark the i:th variable to "set" (i.e. having a value) with
// 'val' true.
void set_isset(uint i, my_bool val);
// Push the variable 'name' to the frame.
void push(LEX_STRING *name,
enum enum_field_types type, sp_param_mode_t mode);
// Pop 'num' variables from the frame.
void pop(uint num = 1);
// Find variable by name
sp_pvar_t *find_pvar(LEX_STRING *name);
// Find variable by index
sp_pvar_t *find_pvar(uint i);
// Push label 'name' of instruction index 'ip' to the label context
sp_label_t *push_label(char *name, uint ip);
// Find label 'name' in the context
sp_label_t *find_label(char *name);
// Return the last pushed label
sp_label_t *last_label();
// Return and remove the last pushed label.
sp_label_t *pop_label();
}
- The run-time context (call frame): sp_rcontext.h
class sp_rcontext
{
// 'size' is the max size of the context
sp_rcontext(uint size);
// Push value (parameter) 'i' to the frame
void push_item(Item *i);
// Set slot 'idx' to value 'i'
void set_item(uint idx, Item *i);
// Return the item in slot 'idx'
Item *get_item(uint idx);
// Set the "out" index 'oidx' for slot 'idx. If it's an IN slot,
// use 'oidx' -1.
void set_oindex(uint idx, int oidx);
// Return the "out" index for slot 'idx'
int get_oindex(uint idx);
}
- The procedure: sp_head.h
class sp_head
{
sp_head(LEX_STRING *name, LEX*);
// Store this procedure in the database. This is a wrapper around
// the function sp_create_procedure().
int create(THD *);
// CALL this procedure.
int execute(THD *);
// Add the instruction to this procedure.
void add_instr(sp_instr *);
// Return the number of instructions.
uint instructions();
// Resets lex in 'thd' and keeps a copy of the old one.
void reset_lex(THD *);
// Restores lex in 'thd' from our copy, but keeps some status from the
// one in 'thd', like ptr, tables, fields, etc.
void restore_lex(THD *);
// Put the instruction on the backpatch list, associated with
// the label.
void push_backpatch(sp_instr *, struct sp_label *);
// Update all instruction with this label in the backpatch list to
// the current position.
void backpatch(struct sp_label *);
}
- Instructions
- The base class:
class sp_instr
{
// 'ip' is the index of this instruction
sp_instr(uint ip);
// Execute this instrution.
// '*nextp' will be set to the index of the next instruction
// to execute. (For most instruction this will be the
// instruction following this one.)
// Returns 0 on success, non-zero if some error occured.
virtual int execute(THD *, uint *nextp)
}
- Statement instruction:
class sp_instr_stmt : public sp_instr
{
sp_instr_stmt(uint ip);
int execute(THD *, uint *nextp);
// Set the statement's Lex
void set_lex(LEX *);
// Return the statement's Lex
LEX *get_lex();
}
- SET instruction:
class sp_instr_set : public sp_instr
{
// 'offset' is the variable's frame offset, 'val' the value,
// and 'type' the variable type.
sp_instr_set(uint ip,
uint offset, Item *val, enum enum_field_types type);
int execute(THD *, uint *nextp);
}
- Unconditional jump
class sp_instr_jump : public sp_instr
{
// No destination, must be set.
sp_instr_jump(uint ip);
// 'dest' is the destination instruction index.
sp_instr_jump(uint ip, uint dest);
virtual int execute(THD *, uint *nextp);
// Set the destination instruction 'dest'.
void set_destination(uint dest);
}
- Conditional jump
class sp_instr_jump_if_not : public sp_instr_jump
{
// Jump if 'i' evaluates to false. Destination not set yet.
sp_instr_jump_if_not(uint ip, Item *i);
// Jump to 'dest' if 'i' evaluates to false.
sp_instr_jump_if_not(uint ip, Item *i, uint dest)
int execute(THD *, uint *nextp);
}
- Utility functions: sp.h
// Finds a stored procedure given its name. Returns NULL if not found.
sp_head *sp_find(THD *, Item_string *name);
// Store the procedure 'name' in the database. 'def' is the complete
// definition string ("create procedure ...").
int sp_create_procedure(THD *,
char *name, uint namelen,
char *def, uint deflen);
// Drop the procedure 'name' from the database.
int sp_drop(THD *, char *name, uint namelen);
--

80
Docs/sp-implemented.txt Normal file
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@ -0,0 +1,80 @@
Stored Procedures implemented 2003-02-02:
Summary of Not Yet Implemented:
- FUNCTIONs
- Routine characteristics
- External languages
- Access control
- Prepared SP caching; SPs are fetched and reparsed at each call
- SQL-99 COMMIT (related to BEGIN/END)
- DECLARE CURSOR ...
- FOR-loops (as it requires cursors)
Summary of what's implemented:
- SQL PROCEDURES (CREATE/DROP)
- CALL
- DECLARE of local variables
- BEGIN/END, SET, CASE, IF, LOOP, WHILE, REPEAT, ITERATE, LEAVE
- SELECT INTO local variables
List of what's implemented:
- CREATE PROCEDURE name ( args ) body
No routine characteristics yet.
- ALTER PROCEDURE name ...
Is parsed, but a no-op (as there are no characteristics implemented yet).
CASCADE/RESTRICT is not implemented (and CASCADE probably will not be).
- DROP PROCEDURE name
CASCADE/RESTRICT is not implemented (and CASCADE probably will not be).
- CALL name (args)
OUT and INOUT parameters are only supported for local variables, and
therefore only useful when calling such procedures from within another
procedure.
Note: For the time being, when a procedure with OUT/INOUT parameter is
called, the out values are silently discarded. In the future, this
will either generate an error message, or it might even work to
call all procedures from the top-level.
- Procedure body:
- BEGIN/END
Is parsed, but not the real thing with (optional) transaction
control, it only serves as block syntax for multiple statements (and
local variable binding).
Note: Multiple statements requires a client that can send bodies
containing ";". This is handled in the CLI clients mysql and
mysqltest with the "delimiter" command. Changing the end-of-query
delimiter ";" to for instance "|" allows
- SET of local variables
Implemented as part of the pre-existing SET syntax. This allows an
extended syntax of "SET a=x, b=y, ..." where different variable types
(SP local and global) can be mixed. This also allows combinations
of local variables and some options that only make sense for
global/system variables; in that case the options are accepted but
ignored.
- The flow control constructs: CASE, IF, LOOP, WHILE, ITERATE and LEAVE
are fully implemented.
- SELECT ... INTO local variables (as well as global session variables)
is implemented. (Note: This is not SQL-99 feature, but common in other
databases.)
Open questions:
- What is the expected result when creating a procedure with a name that
already exists? An error or overwrite?
- Do PROCEDUREs and FUNCTIONs share namespace or not? I think not, but the
we need to flag the type in the mysql.proc table and the name alone is
not a unique key any more, or, we have separate tables.
(Unfortunately, mysql.func is already taken. Use "sfunc" and maybe even
rename "proc" into "sproc" while we still can, for consistency?)
- SQL-99 variables and parameters are typed. For the present we don't do
any type checking, since this is the way MySQL works. I still don't know
if we should keep it this way, or implement type checking.

46
client/mysql.cc
View File

@ -104,6 +104,7 @@ extern "C" {
#include "completion_hash.h"
#define PROMPT_CHAR '\\'
#define DEFAULT_DELIMITER ';'
typedef struct st_status
{
@ -155,6 +156,7 @@ static char pager[FN_REFLEN], outfile[FN_REFLEN];
static FILE *PAGER, *OUTFILE;
static MEM_ROOT hash_mem_root;
static uint prompt_counter;
static char delimiter= DEFAULT_DELIMITER;
#ifdef HAVE_SMEM
static char *shared_memory_base_name=0;
@ -181,7 +183,7 @@ static int com_quit(String *str,char*),
com_use(String *str,char*), com_source(String *str, char*),
com_rehash(String *str, char*), com_tee(String *str, char*),
com_notee(String *str, char*),
com_prompt(String *str, char*);
com_prompt(String *str, char*), com_delimiter(String *str, char*);
#ifdef USE_POPEN
static int com_nopager(String *str, char*), com_pager(String *str, char*),
@ -249,7 +251,8 @@ static COMMANDS commands[] = {
"Set outfile [to_outfile]. Append everything into given outfile." },
{ "use", 'u', com_use, 1,
"Use another database. Takes database name as argument." },
{ "delimiter", 'd', com_delimiter, 1,
"Set query delimiter. " },
/* Get bash-like expansion for some commands */
{ "create table", 0, 0, 0, ""},
{ "create database", 0, 0, 0, ""},
@ -918,7 +921,7 @@ static COMMANDS *find_command (char *name,char cmd_char)
{
while (my_isspace(system_charset_info,*name))
name++;
if (strchr(name,';') || strstr(name,"\\g"))
if (strchr(name, delimiter) || strstr(name,"\\g"))
return ((COMMANDS *) 0);
if ((end=strcont(name," \t")))
{
@ -996,7 +999,7 @@ static bool add_line(String &buffer,char *line,char *in_string,
return 1; // Quit
if (com->takes_params)
{
for (pos++ ; *pos && *pos != ';' ; pos++) ; // Remove parameters
for (pos++ ; *pos && *pos != delimiter; pos++) ; // Remove parameters
if (!*pos)
pos--;
}
@ -1012,7 +1015,7 @@ static bool add_line(String &buffer,char *line,char *in_string,
continue;
}
}
else if (!*ml_comment && inchar == ';' && !*in_string)
else if (!*ml_comment && inchar == delimiter && !*in_string)
{ // ';' is end of command
if (out != line)
buffer.append(line,(uint) (out-line)); // Add this line
@ -1529,7 +1532,7 @@ com_help(String *buffer __attribute__((unused)),
for (i = 0; commands[i].name; i++)
{
if (commands[i].func)
tee_fprintf(stdout, "%s\t(\\%c)\t%s\n", commands[i].name,
tee_fprintf(stdout, "%-10s(\\%c)\t%s\n", commands[i].name,
commands[i].cmd_char, commands[i].doc);
}
}
@ -2366,6 +2369,37 @@ static int com_source(String *buffer, char *line)
return error;
}
/* ARGSUSED */
static int
com_delimiter(String *buffer __attribute__((unused)), char *line)
{
char *tmp;
char buff[256];
if (strlen(line)> 255)
{
put_info("'DELIMITER' command was too long.", INFO_ERROR);
return 0;
}
bzero(buff, sizeof(buff));
strmov(buff, line);
tmp= get_arg(buff, 0);
if (!tmp || !*tmp)
{
put_info("DELIMITER must be followed by a 'delimiter' char", INFO_ERROR);
return 0;
}
if (strlen(tmp)> 1)
{
put_info("Argument must be one char", INFO_ERROR);
return 0;
}
delimiter= *tmp;
return 0;
}
/* ARGSUSED */
static int

27
client/mysqltest.c
View File

@ -89,6 +89,7 @@
#define SLAVE_POLL_INTERVAL 300000 /* 0.3 of a sec */
#define DEFAULT_DELIMITER ';'
enum {OPT_MANAGER_USER=256,OPT_MANAGER_HOST,OPT_MANAGER_PASSWD,
OPT_MANAGER_PORT,OPT_MANAGER_WAIT_TIMEOUT, OPT_SKIP_SAFEMALLOC};
@ -123,6 +124,8 @@ static int block_stack[BLOCK_STACK_DEPTH];
static int block_ok_stack[BLOCK_STACK_DEPTH];
static uint global_expected_errno[MAX_EXPECTED_ERRORS], global_expected_errors;
static char delimiter= DEFAULT_DELIMITER;
DYNAMIC_ARRAY q_lines;
typedef struct
@ -197,7 +200,7 @@ Q_SERVER_START, Q_SERVER_STOP,Q_REQUIRE_MANAGER,
Q_WAIT_FOR_SLAVE_TO_STOP,
Q_REQUIRE_VERSION,
Q_ENABLE_WARNINGS, Q_DISABLE_WARNINGS,
Q_ENABLE_INFO, Q_DISABLE_INFO,
Q_ENABLE_INFO, Q_DISABLE_INFO, Q_DELIMITER,
Q_UNKNOWN, /* Unknown command. */
Q_COMMENT, /* Comments, ignored. */
Q_COMMENT_WITH_COMMAND
@ -260,6 +263,7 @@ const char *command_names[]=
"disable_warnings",
"enable_info",
"diable_info",
"delimiter",
0
};
@ -1529,6 +1533,16 @@ int do_while(struct st_query* q)
return 0;
}
int do_delimiter(char *p)
{
while (*p && my_isspace(system_charset_info,*p))
p++;
if (!*p)
die("Missing delimiter character\n");
delimiter=*p;
return 0;
}
int safe_copy_unescape(char* dest, char* src, int size)
{
@ -1608,7 +1622,7 @@ int read_line(char* buf, int size)
switch(state) {
case R_NORMAL:
/* Only accept '{' in the beginning of a line */
if (c == ';')
if (c == delimiter)
{
*p = 0;
return 0;
@ -1648,7 +1662,7 @@ int read_line(char* buf, int size)
*buf = 0;
return 0;
}
else if (c == ';' || c == '{')
else if (c == delimiter || c == '{')
{
*p = 0;
return 0;
@ -1668,7 +1682,7 @@ int read_line(char* buf, int size)
state = R_ESC_SLASH_Q1;
break;
case R_ESC_Q_Q1:
if (c == ';')
if (c == delimiter)
{
*p = 0;
return 0;
@ -1689,7 +1703,7 @@ int read_line(char* buf, int size)
state = R_ESC_SLASH_Q2;
break;
case R_ESC_Q_Q2:
if (c == ';')
if (c == delimiter)
{
*p = 0;
return 0;
@ -2535,6 +2549,9 @@ int main(int argc, char** argv)
do_sync_with_master2("");
break;
}
case Q_DELIMITER:
do_delimiter(q->first_argument);
break;
case Q_COMMENT: /* Ignore row */
case Q_COMMENT_WITH_COMMAND:
case Q_PING:

2
configure.in
View File

@ -4,7 +4,7 @@ dnl Process this file with autoconf to produce a configure script.
AC_INIT(sql/mysqld.cc)
AC_CANONICAL_SYSTEM
# The Docs Makefile.am parses this line!
AM_INIT_AUTOMAKE(mysql, 4.1.0-alpha)
AM_INIT_AUTOMAKE(mysql, 5.0.0-alpha)
AM_CONFIG_HEADER(config.h)
PROTOCOL_VERSION=10

13
include/mysqld_error.h
View File

@ -266,4 +266,15 @@
#define ER_SELECT_REDUCED 1247
#define ER_TABLENAME_NOT_ALLOWED_HERE 1248
#define ER_NOT_SUPPORTED_AUTH_MODE 1249
#define ER_ERROR_MESSAGES 250
#define ER_SP_NO_RECURSIVE_CREATE 1250
#define ER_SP_ALREADY_EXISTS 1251
#define ER_SP_DOES_NOT_EXIST 1252
#define ER_SP_DROP_FAILED 1253
#define ER_SP_STORE_FAILED 1254
#define ER_SP_LILABEL_MISMATCH 1255
#define ER_SP_LABEL_REDEFINE 1256
#define ER_SP_LABEL_MISMATCH 1257
#define ER_SP_UNINIT_VAR 1258
#define ER_SP_BADSELECT 1259
#define ER_ERROR_MESSAGES 260

3
libmysqld/Makefile.am
View File

@ -55,7 +55,8 @@ sqlsources = convert.cc derror.cc field.cc field_conv.cc filesort.cc \
sql_string.cc sql_table.cc sql_test.cc sql_udf.cc \
sql_update.cc sql_yacc.cc table.cc thr_malloc.cc time.cc \
unireg.cc uniques.cc stacktrace.c sql_union.cc hash_filo.cc \
spatial.cc gstream.cc sql_help.cc
spatial.cc gstream.cc sql_help.cc \
sp_head.cc sp_pcontext.cc sp.cc
EXTRA_DIST = lib_vio.c

14
mysql-test/install_test_db.sh
View File

@ -69,6 +69,7 @@ c_t="" c_c=""
c_hl="" c_hl=""
c_hc="" c_hc=""
c_clr="" c_clr=""
c_p=""
# Check for old tables
if test ! -f $mdata/db.frm
@ -246,6 +247,16 @@ then
c_hc="$c_hc comment='categories of help topics';"
fi
if test ! -f $mdata/proc.frm
then
c_p="$c_p CREATE TABLE proc ("
c_p="$c_p name char(64) binary DEFAULT '' NOT NULL,"
c_p="$c_p body blob DEFAULT '' NOT NULL,"
c_p="$c_p PRIMARY KEY (name)"
c_p="$c_p )"
c_p="$c_p comment='Stored Procedures';"
fi
mysqld_boot=" $execdir/mysqld --no-defaults --bootstrap --skip-grant-tables \
--basedir=$basedir --datadir=$ldata --skip-innodb --skip-bdb $EXTRA_ARG"
echo "running $mysqld_boot"
@ -270,6 +281,9 @@ $c_c
$c_hl
$c_hc
$c_clr
$c_p
END_OF_DATA
then
exit 0

3
mysql-test/r/connect.result
View File

@ -7,6 +7,7 @@ help_category
help_relation
help_topic
host
proc
tables_priv
user
show tables;
@ -22,6 +23,7 @@ help_category
help_relation
help_topic
host
proc
tables_priv
user
show tables;
@ -37,6 +39,7 @@ help_category
help_relation
help_topic
host
proc
tables_priv
user
show tables;

13
mysql-test/r/insert.result
View File

@ -64,3 +64,16 @@ use test_$1;
create table t1 (c int);
insert into test_$1.t1 set test_$1.t1.c = '1';
drop database test_$1;
use test;
drop table if exists t1,t2,t3;
create table t1(id1 int not null auto_increment primary key, t char(12));
create table t2(id2 int not null, t char(12));
create table t3(id3 int not null, t char(12), index(id3));
select count(*) from t2;
count(*)
500
insert into t2 select t1.* from t1, t2 t, t3 where t1.id1 = t.id2 and t.id2 = t3.id3;
select count(*) from t2;
count(*)
25500
drop table if exists t1,t2,t3;

300
mysql-test/r/sp.result Normal file
View File

@ -0,0 +1,300 @@
use test;
drop table if exists t1;
create table t1 (
id char(16) not null,
data int not null
);
create procedure foo42()
insert into test.t1 values ("foo", 42);
create procedure bar(x char(16), y int)
insert into test.t1 values (x, y);
create procedure two(x1 char(16), x2 char(16), y int)
begin
insert into test.t1 values (x1, y);
insert into test.t1 values (x2, y);
end;
create procedure locset(x char(16), y int)
begin
declare z1, z2 int;
set z1 = y;
set z2 = z1+2;
insert into test.t1 values (x, z2);
end;
create procedure mixset(x char(16), y int)
begin
declare z int;
set @z = y, z = 666, max_join_size = 100;
insert into test.t1 values (x, z);
end;
create procedure zip(x char(16), y int)
begin
declare z int;
call zap(y, z);
call bar(x, z);
end;
create procedure zap(x int, out y int)
begin
declare z int;
set z = x+1, y = z;
end;
create procedure iotest(x1 char(16), x2 char(16), y int)
begin
call inc2(x2, y);
insert into test.t1 values (x1, y);
end;
create procedure inc2(x char(16), y int)
begin
call inc(y);
insert into test.t1 values (x, y);
end;
create procedure inc(inout io int)
set io = io + 1;
create procedure cbv1()
begin
declare y int;
set y = 3;
call cbv2(y+1, y);
insert into test.t1 values ("cbv1", y);
end;
create procedure cbv2(y1 int, inout y2 int)
begin
set y2 = 4711;
insert into test.t1 values ("cbv2", y1);
end;
create procedure a0(x int)
while x do
set x = x-1;
insert into test.t1 values ("a0", x);
end while;
create procedure a(x int)
while x > 0 do
set x = x-1;
insert into test.t1 values ("a", x);
end while;
create procedure b(x int)
repeat
insert into test.t1 values (repeat("b",3), x);
set x = x-1;
until x = 0 end repeat;
create procedure b2(x int)
repeat(select 1 into outfile 'b2');
insert into test.t1 values (repeat("b2",3), x);
set x = x-1;
until x = 0 end repeat;
drop procedure b2;
create procedure b3(x int)
repeat
select * from test.t1; # No INTO!
insert into test.t1 values (repeat("b3",3), x);
set x = x-1;
until x = 0 end repeat;
SELECT in a stored procedure must have INTO
create procedure c(x int)
hmm: while x > 0 do
insert into test.t1 values ("c", x);
set x = x-1;
iterate hmm;
insert into test.t1 values ("x", x);
end while hmm;
create procedure d(x int)
hmm: while x > 0 do
insert into test.t1 values ("d", x);
set x = x-1;
leave hmm;
insert into test.t1 values ("x", x);
end while hmm;
create procedure e(x int)
foo: loop
if x = 0 then
leave foo;
end if;
insert into test.t1 values ("e", x);
set x = x-1;
end loop foo;
create procedure f(x int)
if x < 0 then
insert into test.t1 values ("f", 0);
elseif x = 0 then
insert into test.t1 values ("f", 1);
else
insert into test.t1 values ("f", 2);
end if;
create procedure g(x int)
case
when x < 0 then
insert into test.t1 values ("g", 0);
when x = 0 then
insert into test.t1 values ("g", 1);
else
insert into test.t1 values ("g", 2);
end case;
create procedure h(x int)
case x
when 0 then
insert into test.t1 values ("h0", x);
when 1 then
insert into test.t1 values ("h1", x);
else
insert into test.t1 values ("h?", x);
end case;
create procedure into_test(x char(16), y int)
begin
insert into test.t1 values (x, y);
select id,data into x,y from test.t1 limit 1;
insert into test.t1 values (concat(x, "2"), y+2);
end;
create procedure into_test2(x char(16), y int)
begin
insert into test.t1 values (x, y);
select id,data into x,@z from test.t1 limit 1;
insert into test.t1 values (concat(x, "2"), y+2);
end;
call foo42();
select * from t1;
id data
foo 42
delete from t1;
call bar("bar", 666);
select * from t1;
id data
bar 666
delete from t1;
call two("one", "two", 3);
select * from t1;
id data
one 3
two 3
delete from t1;
call locset("locset", 19);
select * from t1;
id data
locset 21
delete from t1;
call mixset("mixset", 19);
show variables like 'max_join_size';
Variable_name Value
max_join_size 100
select id,data,@z from t1;
id data @z
mixset 666 19
delete from t1;
call zip("zip", 99);
select * from t1;
id data
zip 100
delete from t1;
call iotest("io1", "io2", 1);
select * from t1;
id data
io2 2
io1 1
delete from t1;
call cbv1();
select * from t1;
id data
cbv2 4
cbv1 4711
delete from t1;
call a0(3);
select * from t1;
id data
a0 2
a0 1
a0 0
delete from t1;
call a(3);
select * from t1;
id data
a 2
a 1
a 0
delete from t1;
call b(3);
select * from t1;
id data
bbb 3
bbb 2
bbb 1
delete from t1;
call c(3);
select * from t1;
id data
c 3
c 2
c 1
delete from t1;
call d(3);
select * from t1;
id data
d 3
delete from t1;
call e(3);
select * from t1;
id data
e 3
e 2
e 1
delete from t1;
call f(-2);
call f(0);
call f(4);
select * from t1;
id data
f 0
f 1
f 2
delete from t1;
call g(-42);
call g(0);
call g(1);
select * from t1;
id data
g 0
g 1
g 2
delete from t1;
call h(0);
call h(1);
call h(17);
select * from t1;
id data
h0 0
h1 1
h? 17
delete from t1;
call into_test("into", 100);
select * from t1;
id data
into 100
into2 102
delete from t1;
call into_test2("into", 100);
select id,data,@z from t1;
id data @z
into 100 100
into2 102 100
delete from t1;
drop procedure foo42;
drop procedure bar;
drop procedure two;
drop procedure locset;
drop procedure mixset;
drop procedure zip;
drop procedure zap;
drop procedure iotest;
drop procedure inc2;
drop procedure inc;
drop procedure cbv1;
drop procedure cbv2;
drop procedure a0;
drop procedure a;
drop procedure b;
drop procedure c;
drop procedure d;
drop procedure e;
drop procedure f;
drop procedure g;
drop procedure h;
drop procedure into_test;
drop procedure into_test2;
drop table t1;

3
mysql-test/r/subselect.result
View File

@ -593,7 +593,6 @@ x
3
3
INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2;
You can't specify target table 't1' for update in FROM clause
INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2));
select * from t1;
x
@ -601,6 +600,8 @@ x
2
3
3
11
11
0
drop table t1, t2, t3;
CREATE TABLE t1 (x int not null, y int, primary key (x));

31
mysql-test/t/insert.test
View File

@ -65,3 +65,34 @@ use test_$1;
create table t1 (c int);
insert into test_$1.t1 set test_$1.t1.c = '1';
drop database test_$1;
use test;
--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings
create table t1(id1 int not null auto_increment primary key, t char(12));
create table t2(id2 int not null, t char(12));
create table t3(id3 int not null, t char(12), index(id3));
disable_query_log;
let $1 = 100;
while ($1)
{
let $2 = 5;
eval insert into t1(t) values ('$1');
while ($2)
{
eval insert into t2(id2,t) values ($1,'$2');
let $3 = 10;
while ($3)
{
eval insert into t3(id3,t) values ($1,'$2');
dec $3;
}
dec $2;
}
dec $1;
}
enable_query_log;
select count(*) from t2;
insert into t2 select t1.* from t1, t2 t, t3 where t1.id1 = t.id2 and t.id2 = t3.id3;
select count(*) from t2;
drop table if exists t1,t2,t3;

333
mysql-test/t/sp.test Normal file
View File

@ -0,0 +1,333 @@
#
# Basic stored PROCEDURE tests
#
#
use test;
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (
id char(16) not null,
data int not null
);
# Single statement, no params.
create procedure foo42()
insert into test.t1 values ("foo", 42);
# Single statement, two IN params.
create procedure bar(x char(16), y int)
insert into test.t1 values (x, y);
# Now for multiple statements...
delimiter |;
# Two statements.
create procedure two(x1 char(16), x2 char(16), y int)
begin
insert into test.t1 values (x1, y);
insert into test.t1 values (x2, y);
end|
# Simple test of local variables and SET.
create procedure locset(x char(16), y int)
begin
declare z1, z2 int;
set z1 = y;
set z2 = z1+2;
insert into test.t1 values (x, z2);
end|
# The peculiar (non-standard) mixture of variables types in SET.
create procedure mixset(x char(16), y int)
begin
declare z int;
set @z = y, z = 666, max_join_size = 100;
insert into test.t1 values (x, z);
end|
# Multiple CALL statements, one with OUT parameter.
create procedure zip(x char(16), y int)
begin
declare z int;
call zap(y, z);
call bar(x, z);
end|
# SET local variables and OUT parameter.
create procedure zap(x int, out y int)
begin
declare z int;
set z = x+1, y = z;
end|
# INOUT test
create procedure iotest(x1 char(16), x2 char(16), y int)
begin
call inc2(x2, y);
insert into test.t1 values (x1, y);
end|
create procedure inc2(x char(16), y int)
begin
call inc(y);
insert into test.t1 values (x, y);
end|
create procedure inc(inout io int)
set io = io + 1|
# Call-by-value test
# The expected result is:
# ("cbv2", 4)
# ("cbv1", 4711)
create procedure cbv1()
begin
declare y int;
set y = 3;
call cbv2(y+1, y);
insert into test.t1 values ("cbv1", y);
end|
create procedure cbv2(y1 int, inout y2 int)
begin
set y2 = 4711;
insert into test.t1 values ("cbv2", y1);
end|
# Minimal tests of the flow control construts
# Just test on 'x'...
create procedure a0(x int)
while x do
set x = x-1;
insert into test.t1 values ("a0", x);
end while|
# The same, but with a more traditional test.
create procedure a(x int)
while x > 0 do
set x = x-1;
insert into test.t1 values ("a", x);
end while|
# REPEAT
create procedure b(x int)
repeat
insert into test.t1 values (repeat("b",3), x);
set x = x-1;
until x = 0 end repeat|
# Check that repeat isn't parsed the wrong way
create procedure b2(x int)
repeat(select 1 into outfile 'b2');
insert into test.t1 values (repeat("b2",3), x);
set x = x-1;
until x = 0 end repeat|
# We don't actually want to call it.
drop procedure b2|
# Btw, this should generate an error
--error 1259
create procedure b3(x int)
repeat
select * from test.t1; # No INTO!
insert into test.t1 values (repeat("b3",3), x);
set x = x-1;
until x = 0 end repeat|
# Labelled WHILE with ITERATE (pointless really)
create procedure c(x int)
hmm: while x > 0 do
insert into test.t1 values ("c", x);
set x = x-1;
iterate hmm;
insert into test.t1 values ("x", x);
end while hmm|
# Labelled WHILE with LEAVE
create procedure d(x int)
hmm: while x > 0 do
insert into test.t1 values ("d", x);
set x = x-1;
leave hmm;
insert into test.t1 values ("x", x);
end while hmm|
# LOOP, with simple IF statement
create procedure e(x int)
foo: loop
if x = 0 then
leave foo;
end if;
insert into test.t1 values ("e", x);
set x = x-1;
end loop foo|
# A full IF statement
create procedure f(x int)
if x < 0 then
insert into test.t1 values ("f", 0);
elseif x = 0 then
insert into test.t1 values ("f", 1);
else
insert into test.t1 values ("f", 2);
end if|
# This form of CASE is really just syntactic sugar for IF-ELSEIF-...
create procedure g(x int)
case
when x < 0 then
insert into test.t1 values ("g", 0);
when x = 0 then
insert into test.t1 values ("g", 1);
else
insert into test.t1 values ("g", 2);
end case|
# The "simple CASE"
create procedure h(x int)
case x
when 0 then
insert into test.t1 values ("h0", x);
when 1 then
insert into test.t1 values ("h1", x);
else
insert into test.t1 values ("h?", x);
end case|
create procedure into_test(x char(16), y int)
begin
insert into test.t1 values (x, y);
select id,data into x,y from test.t1 limit 1;
insert into test.t1 values (concat(x, "2"), y+2);
end|
# Test INTO with a mix of local and global variables
create procedure into_test2(x char(16), y int)
begin
insert into test.t1 values (x, y);
select id,data into x,@z from test.t1 limit 1;
insert into test.t1 values (concat(x, "2"), y+2);
end|
delimiter ;|
# Now, the CALL tests...
call foo42();
select * from t1;
delete from t1;
call bar("bar", 666);
select * from t1;
delete from t1;
call two("one", "two", 3);
select * from t1;
delete from t1;
call locset("locset", 19);
select * from t1;
delete from t1;
call mixset("mixset", 19);
show variables like 'max_join_size';
select id,data,@z from t1;
delete from t1;
call zip("zip", 99);
select * from t1;
delete from t1;
call iotest("io1", "io2", 1);
select * from t1;
delete from t1;
call cbv1();
select * from t1;
delete from t1;
call a0(3);
select * from t1;
delete from t1;
call a(3);
select * from t1;
delete from t1;
call b(3);
select * from t1;
delete from t1;
call c(3);
select * from t1;
delete from t1;
call d(3);
select * from t1;
delete from t1;
call e(3);
select * from t1;
delete from t1;
call f(-2);
call f(0);
call f(4);
select * from t1;
delete from t1;
call g(-42);
call g(0);
call g(1);
select * from t1;
delete from t1;
call h(0);
call h(1);
call h(17);
select * from t1;
delete from t1;
call into_test("into", 100);
select * from t1;
delete from t1;
call into_test2("into", 100);
select id,data,@z from t1;
delete from t1;
drop procedure foo42;
drop procedure bar;
drop procedure two;
drop procedure locset;
drop procedure mixset;
drop procedure zip;
drop procedure zap;
drop procedure iotest;
drop procedure inc2;
drop procedure inc;
drop procedure cbv1;
drop procedure cbv2;
drop procedure a0;
drop procedure a;
drop procedure b;
drop procedure c;
drop procedure d;
drop procedure e;
drop procedure f;
drop procedure g;
drop procedure h;
drop procedure into_test;
drop procedure into_test2;
drop table t1;

1
mysql-test/t/subselect.test
View File

@ -343,7 +343,6 @@ INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(a) FROM t2));
select * from t1;
INSERT INTO t1 (x) select (SELECT SUM(a)+1 FROM t2) FROM t2;
select * from t1;
-- error 1093
INSERT INTO t1 (x) select (SELECT SUM(x)+2 FROM t1) FROM t2;
INSERT DELAYED INTO t1 (x) VALUES ((SELECT SUM(x) FROM t2));
-- sleep 1

13
scripts/mysql_install_db.sh
View File

@ -306,6 +306,18 @@ then
c_c="$c_c comment='Column privileges';"
fi
if test ! -f $mdata/proc.frm
then
echo "Preparing proc table"
c_p="$c_p CREATE TABLE proc ("
c_p="$c_p name char(64) binary DEFAULT '' NOT NULL,"
c_p="$c_p body blob DEFAULT '' NOT NULL,"
c_p="$c_p PRIMARY KEY (name)"
c_p="$c_p )"
c_p="$c_p comment='Stored Procedures';"
fi
echo "Installing all prepared tables"
if (
cat << END_OF_DATA
@ -324,6 +336,7 @@ $i_f
$c_t
$c_c
$c_p
END_OF_DATA
cat fill_help_tables.sql
) | eval "$execdir/mysqld $defaults --bootstrap --skip-grant-tables \

6
sql/Makefile.am
View File

@ -57,7 +57,8 @@ noinst_HEADERS = item.h item_func.h item_sum.h item_cmpfunc.h \
lex.h lex_symbol.h sql_acl.h sql_crypt.h \
log_event.h mini_client.h sql_repl.h slave.h \
stacktrace.h sql_sort.h sql_cache.h set_var.h \
spatial.h gstream.h
spatial.h gstream.h sp_head.h sp_pcontext.h \
sp_rcontext.h sp.h
mysqld_SOURCES = sql_lex.cc sql_handler.cc \
item.cc item_sum.cc item_buff.cc item_func.cc \
item_cmpfunc.cc item_strfunc.cc item_timefunc.cc \
@ -85,7 +86,8 @@ mysqld_SOURCES = sql_lex.cc sql_handler.cc \
slave.cc sql_repl.cc sql_union.cc sql_derived.cc \
mini_client.cc mini_client_errors.c \
stacktrace.c repl_failsafe.h repl_failsafe.cc sql_olap.cc\
gstream.cc spatial.cc sql_help.cc
gstream.cc spatial.cc sql_help.cc \
sp_head.cc sp_pcontext.cc sp.cc
gen_lex_hash_SOURCES = gen_lex_hash.cc
gen_lex_hash_LDADD = $(LDADD) $(CXXLDFLAGS)

19
sql/item.cc
View File

@ -22,6 +22,7 @@
#include "mysql_priv.h"
#include <m_ctype.h>
#include "my_dir.h"
#include "sp_rcontext.h"
/*****************************************************************************
** Item functions
@ -166,6 +167,24 @@ CHARSET_INFO * Item::thd_charset() const
return current_thd->variables.thd_charset;
}
Item *
Item_splocal::this_item()
{
THD *thd= current_thd;
return thd->spcont->get_item(m_offset);
}
Item *
Item_splocal::this_const_item() const
{
THD *thd= current_thd;
return thd->spcont->get_item(m_offset);
}
Item_field::Item_field(Field *f) :Item_ident(NullS,f->table_name,f->field_name)
{
set_field(f);

53
sql/item.h
View File

@ -111,6 +111,8 @@ public:
CHARSET_INFO *charset() const { return str_value.charset(); };
void set_charset(CHARSET_INFO *cs) { str_value.set_charset(cs); }
virtual void set_outer_resolving() {}
virtual Item *this_item() { return this; } /* For SPs mostly. */
virtual Item *this_const_item() const { return const_cast<Item*>(this); } /* For SPs mostly. */
// Row emulation
virtual uint cols() { return 1; }
@ -124,6 +126,57 @@ public:
};
// A local SP variable (incl. parameters), used in runtime
class Item_splocal : public Item
{
private:
uint m_offset;
public:
Item_splocal(uint offset)
: m_offset(offset)
{}
Item *this_item();
Item *this_const_item() const;
inline uint get_offset()
{
return m_offset;
}
// Abstract methods inherited from Item. Just defer the call to
// the item in the frame
inline enum Type type() const
{
return this_const_item()->type();
}
inline double val()
{
return this_item()->val();
}
inline longlong val_int()
{
return this_item()->val_int();
}
inline String *val_str(String *sp)
{
return this_item()->val_str(sp);
}
inline void make_field(Send_field *field)
{
this_item()->make_field(field);
}
};
class st_select_lex;
class Item_ident :public Item
{

17
sql/lex.h
View File

@ -60,6 +60,7 @@ static SYMBOL symbols[] = {
{ "AS", SYM(AS),0,0},
{ "ASC", SYM(ASC),0,0},
{ "ASCII", SYM(ASCII_SYM),0,0},
{ "ASENSITIVE", SYM(ASENSITIVE_SYM),0,0},
{ "AVG", SYM(AVG_SYM),0,0},
{ "AVG_ROW_LENGTH", SYM(AVG_ROW_LENGTH),0,0},
{ "AUTO_INCREMENT", SYM(AUTO_INC),0,0},
@ -80,6 +81,7 @@ static SYMBOL symbols[] = {
{ "BY", SYM(BY),0,0},
{ "BYTE", SYM(BYTE_SYM), 0, 0},
{ "CACHE", SYM(CACHE_SYM),0,0},
{ "CALL", SYM(CALL_SYM),0,0},
{ "CASCADE", SYM(CASCADE),0,0},
{ "CASE", SYM(CASE_SYM),0,0},
{ "CHAR", SYM(CHAR_SYM),0,0},
@ -107,6 +109,7 @@ static SYMBOL symbols[] = {
{ "CURRENT_DATE", SYM(CURDATE),0,0},
{ "CURRENT_TIME", SYM(CURTIME),0,0},
{ "CURRENT_TIMESTAMP", SYM(NOW_SYM),0,0},
{ "CURSOR", SYM(CURSOR_SYM),0,0},
{ "DATA", SYM(DATA_SYM),0,0},
{ "DATABASE", SYM(DATABASE),0,0},
{ "DATABASES", SYM(DATABASES),0,0},
@ -118,6 +121,7 @@ static SYMBOL symbols[] = {
{ "DAY_SECOND", SYM(DAY_SECOND_SYM),0,0},
{ "DEC", SYM(DECIMAL_SYM),0,0},
{ "DECIMAL", SYM(DECIMAL_SYM),0,0},
{ "DECLARE", SYM(DECLARE_SYM),0,0},
{ "DES_KEY_FILE", SYM(DES_KEY_FILE),0,0},
{ "DEFAULT", SYM(DEFAULT),0,0},
{ "DELAYED", SYM(DELAYED_SYM),0,0},
@ -140,6 +144,7 @@ static SYMBOL symbols[] = {
{ "ERRORS", SYM(ERRORS),0,0},
{ "END", SYM(END),0,0},
{ "ELSE", SYM(ELSE),0,0},
{ "ELSEIF", SYM(ELSEIF_SYM),0,0},
{ "ESCAPE", SYM(ESCAPE_SYM),0,0},
{ "ESCAPED", SYM(ESCAPED),0,0},
{ "ENABLE", SYM(ENABLE_SYM),0,0},
@ -195,6 +200,8 @@ static SYMBOL symbols[] = {
{ "INNER", SYM(INNER_SYM),0,0},
{ "INNOBASE", SYM(INNOBASE_SYM),0,0},
{ "INNODB", SYM(INNOBASE_SYM),0,0},
{ "INOUT", SYM(INOUT_SYM),0,0},
{ "INSENSITIVE", SYM(INSENSITIVE_SYM),0,0},
{ "INSERT", SYM(INSERT),0,0},
{ "INSERT_METHOD", SYM(INSERT_METHOD),0,0},
{ "INT", SYM(INT_SYM),0,0},
@ -212,12 +219,14 @@ static SYMBOL symbols[] = {
{ "ISOLATION", SYM(ISOLATION),0,0},
{ "ISAM", SYM(ISAM_SYM),0,0},
{ "ISSUER", SYM(ISSUER_SYM),0,0},
{ "ITERATE", SYM(ITERATE_SYM),0,0},
{ "JOIN", SYM(JOIN_SYM),0,0},
{ "KEY", SYM(KEY_SYM),0,0},
{ "KEYS", SYM(KEYS),0,0},
{ "KILL", SYM(KILL_SYM),0,0},
{ "LAST", SYM(LAST_SYM),0,0},
{ "LEADING", SYM(LEADING),0,0},
{ "LEAVE", SYM(LEAVE_SYM),0,0},
{ "LEFT", SYM(LEFT),0,0},
{ "LEVEL", SYM(LEVEL_SYM),0,0},
{ "LIKE", SYM(LIKE),0,0},
@ -233,6 +242,7 @@ static SYMBOL symbols[] = {
{ "LOGS", SYM(LOGS_SYM),0,0},
{ "LONG", SYM(LONG_SYM),0,0},
{ "LONGBLOB", SYM(LONGBLOB),0,0},
{ "LOOP", SYM(LOOP_SYM),0,0},
{ "LONGTEXT", SYM(LONGTEXT),0,0},
{ "LOW_PRIORITY", SYM(LOW_PRIORITY),0,0},
{ "MASTER", SYM(MASTER_SYM),0,0},
@ -285,6 +295,7 @@ static SYMBOL symbols[] = {
{ "OPTIONALLY", SYM(OPTIONALLY),0,0},
{ "OR", SYM(OR),0,0},
{ "ORDER", SYM(ORDER_SYM),0,0},
{ "OUT", SYM(OUT_SYM),0,0},
{ "OUTER", SYM(OUTER),0,0},
{ "OUTFILE", SYM(OUTFILE),0,0},
{ "PACK_KEYS", SYM(PACK_KEYS_SYM),0,0},
@ -314,6 +325,7 @@ static SYMBOL symbols[] = {
{ "REPAIR", SYM(REPAIR),0,0},
{ "REPLACE", SYM(REPLACE),0,0},
{ "REPLICATION", SYM(REPLICATION),0,0},
{ "REPEAT", SYM(REPEAT_SYM),0,0},
{ "REPEATABLE", SYM(REPEATABLE_SYM),0,0},
{ "REQUIRE", SYM(REQUIRE_SYM),0,0},
{ "RESET", SYM(RESET_SYM),0,0},
@ -331,6 +343,7 @@ static SYMBOL symbols[] = {
{ "RTREE", SYM(RTREE_SYM),0,0},
{ "SECOND", SYM(SECOND_SYM),0,0},
{ "SELECT", SYM(SELECT_SYM),0,0},
{ "SENSITIVE", SYM(SENSITIVE_SYM),0,0},
{ "SERIAL", SYM(SERIAL_SYM),0,0},
{ "SERIALIZABLE", SYM(SERIALIZABLE_SYM),0,0},
{ "SESSION", SYM(SESSION_SYM),0,0},
@ -345,6 +358,7 @@ static SYMBOL symbols[] = {
{ "SOME", SYM(ANY_SYM),0,0},
{ "SONAME", SYM(UDF_SONAME_SYM),0,0},
{ "SPATIAL", SYM(SPATIAL_SYM),0,0},
{ "SPECIFIC", SYM(SPECIFIC_SYM),0,0},
{ "SQL_BIG_RESULT", SYM(SQL_BIG_RESULT),0,0},
{ "SQL_BUFFER_RESULT", SYM(SQL_BUFFER_RESULT),0,0},
{ "SQL_CACHE", SYM(SQL_CACHE_SYM), 0, 0},
@ -387,6 +401,7 @@ static SYMBOL symbols[] = {
{ "UNIQUE", SYM(UNIQUE_SYM),0,0},
{ "UNLOCK", SYM(UNLOCK_SYM),0,0},
{ "UNSIGNED", SYM(UNSIGNED),0,0},
{ "UNTIL", SYM(UNTIL_SYM),0,0},
{ "USE", SYM(USE_SYM),0,0},
{ "USE_FRM", SYM(USE_FRM),0,0},
{ "USING", SYM(USING),0,0},
@ -405,6 +420,7 @@ static SYMBOL symbols[] = {
{ "WRITE", SYM(WRITE_SYM),0,0},
{ "WHEN", SYM(WHEN_SYM),0,0},
{ "WHERE", SYM(WHERE),0,0},
{ "WHILE", SYM(WHILE_SYM),0,0},
{ "XOR", SYM(XOR),0,0},
{ "X509", SYM(X509_SYM),0,0},
{ "YEAR", SYM(YEAR_SYM),0,0},
@ -555,7 +571,6 @@ static SYMBOL sql_functions[] = {
{ "RADIANS", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_radians)},
{ "RAND", SYM(RAND),0,0},
{ "RELEASE_LOCK", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_release_lock)},
{ "REPEAT", SYM(FUNC_ARG2),0,CREATE_FUNC(create_func_repeat)},
{ "REVERSE", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_reverse)},
{ "ROUND", SYM(ROUND),0,0},
{ "RPAD", SYM(FUNC_ARG3),0,CREATE_FUNC(create_func_rpad)},

2
sql/mysql_priv.h
View File

@ -361,7 +361,7 @@ extern "C" pthread_handler_decl(handle_one_connection,arg);
extern "C" pthread_handler_decl(handle_bootstrap,arg);
void end_thread(THD *thd,bool put_in_cache);
void flush_thread_cache();
void mysql_execute_command(THD *thd);
int mysql_execute_command(THD *thd);
bool do_command(THD *thd);
bool dispatch_command(enum enum_server_command command, THD *thd,
char* packet, uint packet_length);

12
sql/share/czech/errmsg.txt
View File

@ -259,4 +259,14 @@ v/*
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/danish/errmsg.txt
View File

@ -253,4 +253,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/dutch/errmsg.txt
View File

@ -261,4 +261,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/english/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias",
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/estonian/errmsg.txt
View File

@ -255,4 +255,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/french/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/german/errmsg.txt
View File

@ -260,4 +260,14 @@
"Für jede abgeleitete Tabelle muss ein eigener Alias angegeben werden.",
"Select %u wurde während der Optimierung reduziert.",
"Tabelle '%-.64s', die in einem der SELECT-Befehle verwendet wurde kann nicht in %-.32s verwendet werden."
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/greek/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/hungarian/errmsg.txt
View File

@ -252,4 +252,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/italian/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/japanese/errmsg.txt
View File

@ -252,4 +252,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/korean/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/norwegian-ny/errmsg.txt
View File

@ -252,4 +252,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/norwegian/errmsg.txt
View File

@ -252,4 +252,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/polish/errmsg.txt
View File

@ -254,4 +254,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/portuguese/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/romanian/errmsg.txt
View File

@ -254,4 +254,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/russian/errmsg.txt
View File

@ -253,4 +253,14 @@
"Every derived table must have it's own alias"
"Select %u ÂÙÌ ÕÐÒÁÚÄÎÅÎ × ÐÒÏÃÅÓÓÅ ÏÐÔÉÍÉÚÁÃÉÉ",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/serbian/errmsg.txt
View File

@ -246,4 +246,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/slovak/errmsg.txt
View File

@ -258,4 +258,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/spanish/errmsg.txt
View File

@ -251,4 +251,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/swedish/errmsg.txt
View File

@ -250,4 +250,14 @@
"Every derived table must have it's own alias"
"Select %u was reduced during optimisation",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

12
sql/share/ukrainian/errmsg.txt
View File

@ -255,4 +255,14 @@
"Every derived table must have it's own alias"
"Select %u was ÓËÁÓÏ×ÁÎÏ ÐÒÉ ÏÐÔÉÍiÚÁÃii",
"Table '%-.64s' from one of SELECT's can not be used in %-.32s"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Client does not support authentication protocol requested by server. Consider upgrading MySQL client"
"Can't create a PROCEDURE from within a PROCEDURE"
"PROCEDURE already exists"
"PROCEDURE does not exist"
"Failed to DROP PROCEDURE"
"Failed to CREATE PROCEDURE"
"%s with no matching label"
"Redefining label"
"End-label without match"
"Referring to uninitialized variable"
"SELECT in a stored procedure must have INTO"

125
sql/sp.cc Normal file
View File

@ -0,0 +1,125 @@
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysql_priv.h"
#include "sp.h"
#include "sp_head.h"
// Finds the SP 'name'. Currently this always reads from the database
// and prepares (parse) it, but in the future it will first look in
// the in-memory cache for SPs. (And store newly prepared SPs there of
// course.)
sp_head *
sp_find_procedure(THD *thd, Item_string *iname)
{
DBUG_ENTER("sp_find_procedure");
extern int yyparse(void *thd);
LEX *tmplex;
TABLE *table;
TABLE_LIST tables;
const char *defstr;
String *name;
sp_head *sp = NULL;
name = iname->const_string();
DBUG_PRINT("enter", ("name: %*s", name->length(), name->c_ptr()));
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
tables.real_name= tables.alias= (char*)"proc";
if (! (table= open_ltable(thd, &tables, TL_READ)))
DBUG_RETURN(NULL);
if (table->file->index_read_idx(table->record[0], 0,
(byte*)name->c_ptr(), name->length(),
HA_READ_KEY_EXACT))
goto done;
if ((defstr= get_field(&thd->mem_root, table, 1)) == NULL)
goto done;
// QQ Set up our own mem_root here???
tmplex= lex_start(thd, (uchar*)defstr, strlen(defstr));
if (yyparse(thd) || thd->fatal_error || tmplex->sphead == NULL)
goto done; // Error
else
sp = tmplex->sphead;
done:
if (table)
close_thread_tables(thd);
DBUG_RETURN(sp);
}
int
sp_create_procedure(THD *thd, char *name, uint namelen, char *def, uint deflen)
{
DBUG_ENTER("sp_create_procedure");
DBUG_PRINT("enter", ("name: %*s def: %*s", namelen, name, deflen, def));
int ret= 0;
TABLE *table;
TABLE_LIST tables;
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
tables.real_name= tables.alias= (char*)"proc";
/* Allow creation of procedures even if we can't open proc table */
if (! (table= open_ltable(thd, &tables, TL_WRITE)))
{
ret= -1;
goto done;
}
restore_record(table, 2); // Get default values for fields
table->field[0]->store(name, namelen, default_charset_info);
table->field[1]->store(def, deflen, default_charset_info);
ret= table->file->write_row(table->record[0]);
done:
close_thread_tables(thd);
DBUG_RETURN(ret);
}
int
sp_drop_procedure(THD *thd, char *name, uint namelen)
{
DBUG_ENTER("sp_drop_procedure");
DBUG_PRINT("enter", ("name: %*s", namelen, name));
TABLE *table;
TABLE_LIST tables;
tables.db= (char *)"mysql";
tables.real_name= tables.alias= (char *)"proc";
if (! (table= open_ltable(thd, &tables, TL_WRITE)))
goto err;
if (! table->file->index_read_idx(table->record[0], 0,
(byte *)name, namelen,
HA_READ_KEY_EXACT))
{
int error;
if ((error= table->file->delete_row(table->record[0])))
table->file->print_error(error, MYF(0));
}
close_thread_tables(thd);
DBUG_RETURN(0);
err:
close_thread_tables(thd);
DBUG_RETURN(-1);
}

44
sql/sp.h Normal file
View File

@ -0,0 +1,44 @@
/* -*- C++ -*- */
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _SP_H_
#define _SP_H_
//
// Finds a stored procedure given its name. Returns NULL if not found.
//
sp_head *
sp_find_procedure(THD *thd, Item_string *name);
int
sp_create_procedure(THD *thd, char *name, uint namelen, char *def, uint deflen);
int
sp_drop_procedure(THD *thd, char *name, uint namelen);
#if 0
sp_head *
sp_find_function(THD *thd, Item_string *name);
int
sp_create_function(THD *thd, char *name, uint namelen, char *def, uint deflen);
int
sp_drop_function(THD *thd, char *name, uint namelen);
#endif
#endif /* _SP_H_ */

422
sql/sp_head.cc Normal file
View File

@ -0,0 +1,422 @@
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef __GNUC__
#pragma implementation
#endif
#include "mysql_priv.h"
#include "sp_head.h"
#include "sp.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
/* Evaluate a (presumed) func item. Always returns an item, the parameter
** if nothing else.
*/
static Item *
eval_func_item(THD *thd, Item *it, enum enum_field_types type)
{
it= it->this_item();
if (it->fix_fields(thd, 0, NULL))
return it; // Shouldn't happen?
/* QQ How do we do this? Is there some better way? */
switch (type)
{
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_INT24:
it= new Item_int(it->val_int());
break;
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_FLOAT:
case MYSQL_TYPE_DOUBLE:
it= new Item_real(it->val());
break;
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_NEWDATE:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer, sizeof(buffer), default_charset_info);
String *s= it->val_str(&tmp);
it= new Item_string(s->c_ptr_quick(), s->length(), default_charset_info);
break;
}
case MYSQL_TYPE_NULL:
it= new Item_null(); // A NULL is a NULL is a NULL...
break;
case MYSQL_TYPE_ENUM:
case MYSQL_TYPE_SET:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_GEOMETRY:
/* QQ Don't know what to do with the rest. */
break;
}
return it;
}
sp_head::sp_head(LEX_STRING *name, LEX *lex)
: m_simple_case(FALSE)
{
const char *dstr = (const char*)lex->buf;
m_call_lex= lex;
m_name= new Item_string(name->str, name->length, default_charset_info);
m_defstr= new Item_string(dstr, lex->end_of_query - lex->buf,
default_charset_info);
my_init_dynamic_array(&m_instr, sizeof(sp_instr *), 16, 8);
m_backpatch.empty();
}
int
sp_head::create(THD *thd)
{
DBUG_ENTER("sp_head::create");
String *name= m_name->const_string();
String *def= m_defstr->const_string();
DBUG_PRINT("info", ("name: %s def: %s", name->c_ptr(), def->c_ptr()));
DBUG_RETURN(sp_create_procedure(thd,
name->c_ptr(), name->length(),
def->c_ptr(), def->length()));
}
int
sp_head::execute(THD *thd)
{
DBUG_ENTER("sp_head::execute");
DBUG_PRINT("executing", ("procedure %s", ((String *)m_name->const_string())->c_ptr()));
int ret= 0;
sp_instr *p;
sp_pcontext *pctx = m_call_lex->spcont;
uint csize = pctx->max_framesize();
uint params = pctx->params();
sp_rcontext *octx = thd->spcont;
sp_rcontext *nctx = NULL;
my_bool tmp_octx = FALSE; // True if we have allocated a temporary octx
if (csize > 0)
{
uint i;
List_iterator_fast<Item> li(m_call_lex->value_list);
Item *it = li++; // Skip first one, it's the procedure name
nctx = new sp_rcontext(csize);
if (! octx)
{ // Create a temporary old context
octx = new sp_rcontext(csize);
tmp_octx = TRUE;
}
// QQ: No error checking whatsoever right now. Should do type checking?
for (i = 0 ; (it= li++) && i < params ; i++)
{
sp_pvar_t *pvar = pctx->find_pvar(i);
if (! pvar)
nctx->set_oindex(i, -1); // Shouldn't happen
else
{
if (pvar->mode == sp_param_out)
nctx->push_item(it->this_item()); // OUT
else
nctx->push_item(eval_func_item(thd, it, pvar->type)); // IN or INOUT
// Note: If it's OUT or INOUT, it must be a variable.
// QQ: Need to handle "global" user/host variables too!!!
if (pvar->mode == sp_param_in)
nctx->set_oindex(i, -1); // IN
else // OUT or INOUT
nctx->set_oindex(i, static_cast<Item_splocal *>(it)->get_offset());
}
}
// The rest of the frame are local variables which are all IN.
// QQ We haven't found any hint of what the value is when unassigned,
// so we set it to NULL for now. It's an error to refer to an
// unassigned variable anyway (which should be detected by the parser).
for (; i < csize ; i++)
nctx->push_item(NULL);
thd->spcont= nctx;
}
{ // Execute instructions...
uint ip= 0;
while (ret == 0)
{
sp_instr *i;
i = get_instr(ip); // Returns NULL when we're done.
if (i == NULL)
break;
DBUG_PRINT("execute", ("Instruction %u", ip));
ret= i->execute(thd, &ip);
}
}
// Don't copy back OUT values if we got an error
if (ret == 0 && csize > 0)
{
List_iterator_fast<Item> li(m_call_lex->value_list);
Item *it = li++; // Skip first one, it's the procedure name
// Copy back all OUT or INOUT values to the previous frame, or
// set global user variables
for (uint i = 0 ; (it= li++) && i < params ; i++)
{
int oi = nctx->get_oindex(i);
if (oi >= 0)
{
if (! tmp_octx)
octx->set_item(nctx->get_oindex(i), nctx->get_item(i));
else
{ // A global user variable
#if 0
// QQ This works if the parameter really is a user variable, but
// for the moment we can't assure that, so it will crash if it's
// something else. So for now, we just do nothing, to avoid a crash.
// Note: This also assumes we have a get_name() method in
// the Item_func_get_user_var class.
Item *item= nctx->get_item(i);
Item_func_set_user_var *suv;
Item_func_get_user_var *guv= static_cast<Item_func_get_user_var*>(it);
suv= new Item_func_set_user_var(guv->get_name(), item);
suv->fix_fields(thd, NULL, &item);
suv->fix_length_and_dec();
suv->update();
#endif
}
}
}
if (tmp_octx)
thd->spcont= NULL;
else
thd->spcont= octx;
}
DBUG_RETURN(ret);
}
// Reset lex during parsing, before we parse a sub statement.
void
sp_head::reset_lex(THD *thd)
{
memcpy(&m_lex, &thd->lex, sizeof(LEX)); // Save old one
/* Reset most stuff. The length arguments doesn't matter here. */
lex_start(thd, m_lex.buf, m_lex.end_of_query - m_lex.ptr);
/* We must reset ptr and end_of_query again */
thd->lex.ptr= m_lex.ptr;
thd->lex.end_of_query= m_lex.end_of_query;
/* And keep the SP stuff too */
thd->lex.sphead = m_lex.sphead;
thd->lex.spcont = m_lex.spcont;
/* Clear all lists. (QQ Why isn't this reset by lex_start()?).
We may be overdoing this, but we know for sure that value_list must
be cleared at least. */
thd->lex.col_list.empty();
thd->lex.ref_list.empty();
thd->lex.drop_list.empty();
thd->lex.alter_list.empty();
thd->lex.interval_list.empty();
thd->lex.users_list.empty();
thd->lex.columns.empty();
thd->lex.key_list.empty();
thd->lex.create_list.empty();
thd->lex.insert_list= NULL;
thd->lex.field_list.empty();
thd->lex.value_list.empty();
thd->lex.many_values.empty();
thd->lex.var_list.empty();
thd->lex.param_list.empty();
thd->lex.proc_list.empty();
thd->lex.auxilliary_table_list.empty();
}
// Restore lex during parsing, after we have parsed a sub statement.
void
sp_head::restore_lex(THD *thd)
{
// Update some state in the old one first
m_lex.ptr= thd->lex.ptr;
m_lex.next_state= thd->lex.next_state;
// Collect some data from the sub statement lex.
if (thd->lex.sql_command == SQLCOM_CALL)
{
// We know they are Item_strings (since we put them there ourselves)
// It would be slightly faster to keep the list sorted, but we need
// an "insert before" method to do that.
Item_string *proc= static_cast<Item_string*>(thd->lex.value_list.head());
String *snew= proc->val_str(NULL);
List_iterator_fast<Item_string> li(m_calls);
Item_string *it;
while ((it= li++))
{
String *sold= it->val_str(NULL);
if (stringcmp(snew, sold) == 0)
break;
}
if (! it)
m_calls.push_back(proc);
}
// Merge used tables
// QQ ...or just open tables in thd->open_tables?
// This is not entirerly clear at the moment, but for now, we collect
// tables here.
for (SELECT_LEX *sl= thd->lex.all_selects_list ;
sl ;
sl= sl->next_select())
{
for (TABLE_LIST *tables= sl->get_table_list() ;
tables ;
tables= tables->next)
{
List_iterator_fast<char *> li(m_tables);
char **tb;
while ((tb= li++))
if (strcasecmp(tables->real_name, *tb) == 0)
break;
if (! tb)
m_tables.push_back(&tables->real_name);
}
}
memcpy(&thd->lex, &m_lex, sizeof(LEX)); // Restore lex
}
void
sp_head::push_backpatch(sp_instr *i, sp_label_t *lab)
{
bp_t *bp= (bp_t *)my_malloc(sizeof(bp_t), MYF(MY_WME));
if (bp)
{
bp->lab= lab;
bp->instr= i;
(void)m_backpatch.push_front(bp);
}
}
void
sp_head::backpatch(sp_label_t *lab)
{
bp_t *bp;
uint dest= instructions();
List_iterator_fast<bp_t> li(m_backpatch);
while ((bp= li++))
if (bp->lab == lab)
{
sp_instr_jump *i= static_cast<sp_instr_jump *>(bp->instr);
i->set_destination(dest);
}
}
// ------------------------------------------------------------------
//
// sp_instr_stmt
//
int
sp_instr_stmt::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_stmt::execute");
DBUG_PRINT("info", ("command: %d", m_lex.sql_command));
LEX olex; // The other lex
int res;
memcpy(&olex, &thd->lex, sizeof(LEX)); // Save the other lex
memcpy(&thd->lex, &m_lex, sizeof(LEX)); // Use my own lex
thd->lex.thd = thd;
res= mysql_execute_command(thd);
memcpy(&thd->lex, &olex, sizeof(LEX)); // Restore the other lex
*nextp = m_ip+1;
DBUG_RETURN(res);
}
//
// sp_instr_set
//
int
sp_instr_set::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_set::execute");
DBUG_PRINT("info", ("offset: %u", m_offset));
thd->spcont->set_item(m_offset, eval_func_item(thd, m_value, m_type));
*nextp = m_ip+1;
DBUG_RETURN(0);
}
//
// sp_instr_jump_if
//
int
sp_instr_jump_if::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_jump_if::execute");
DBUG_PRINT("info", ("destination: %u", m_dest));
Item *it= eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
if (it->val_int())
*nextp = m_dest;
else
*nextp = m_ip+1;
DBUG_RETURN(0);
}
//
// sp_instr_jump_if_not
//
int
sp_instr_jump_if_not::execute(THD *thd, uint *nextp)
{
DBUG_ENTER("sp_instr_jump_if_not::execute");
DBUG_PRINT("info", ("destination: %u", m_dest));
Item *it= eval_func_item(thd, m_expr, MYSQL_TYPE_TINY);
if (! it->val_int())
*nextp = m_dest;
else
*nextp = m_ip+1;
DBUG_RETURN(0);
}

306
sql/sp_head.h Normal file
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@ -0,0 +1,306 @@
/* -*- C++ -*- */
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _SP_HEAD_H_
#define _SP_HEAD_H_
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
#include <stddef.h>
struct sp_label;
class sp_instr;
class sp_head : public Sql_alloc
{
sp_head(const sp_head &); /* Prevent use of these */
void operator=(sp_head &);
public:
my_bool m_simple_case; // TRUE if parsing simple case, FALSE otherwise
List<Item_string> m_calls; // Called procedures.
List<char *> m_tables; // Used tables.
static void *operator new(size_t size)
{
return (void*) sql_alloc((uint) size);
}
static void operator delete(void *ptr, size_t size)
{
/* Empty */
}
sp_head(LEX_STRING *name, LEX* lex);
int
create(THD *thd);
int
execute(THD *thd);
inline void
add_instr(sp_instr *i)
{
insert_dynamic(&m_instr, (gptr)&i);
}
inline uint
instructions()
{
return m_instr.elements;
}
// Resets lex in 'thd' and keeps a copy of the old one.
void
reset_lex(THD *thd);
// Restores lex in 'thd' from our copy, but keeps some status from the
// one in 'thd', like ptr, tables, fields, etc.
void
restore_lex(THD *thd);
// Put the instruction on the backpatch list, associated with the label.
void
push_backpatch(sp_instr *, struct sp_label *);
// Update all instruction with this label in the backpatch list to
// the current position.
void
backpatch(struct sp_label *);
private:
Item_string *m_name;
Item_string *m_defstr;
LEX *m_call_lex; // The CALL's own lex
LEX m_lex; // Temp. store for the other lex
DYNAMIC_ARRAY m_instr; // The "instructions"
typedef struct
{
struct sp_label *lab;
sp_instr *instr;
} bp_t;
List<bp_t> m_backpatch; // Instructions needing backpaching
inline sp_instr *
get_instr(uint i)
{
sp_instr *in= NULL;
get_dynamic(&m_instr, (gptr)&in, i);
return in;
}
}; // class sp_head : public Sql_alloc
//
// "Instructions"...
//
class sp_instr : public Sql_alloc
{
sp_instr(const sp_instr &); /* Prevent use of these */
void operator=(sp_instr &);
public:
// Should give each a name or type code for debugging purposes?
sp_instr(uint ip)
: Sql_alloc(), m_ip(ip)
{}
virtual ~sp_instr()
{}
// Execute this instrution. '*nextp' will be set to the index of the next
// instruction to execute. (For most instruction this will be the
// instruction following this one.)
// Returns 0 on success, non-zero if some error occured.
virtual int
execute(THD *thd, uint *nextp)
{ // Default is a no-op.
*nextp = m_ip+1; // Next instruction
return 0;
}
protected:
uint m_ip; // My index
}; // class sp_instr : public Sql_alloc
//
// Call out to some prepared SQL statement.
//
class sp_instr_stmt : public sp_instr
{
sp_instr_stmt(const sp_instr_stmt &); /* Prevent use of these */
void operator=(sp_instr_stmt &);
public:
sp_instr_stmt(uint ip)
: sp_instr(ip)
{}
virtual ~sp_instr_stmt()
{}
virtual int execute(THD *thd, uint *nextp);
inline void
set_lex(LEX *lex)
{
memcpy(&m_lex, lex, sizeof(LEX));
}
inline LEX *
get_lex()
{
return &m_lex;
}
private:
LEX m_lex; // My own lex
}; // class sp_instr_stmt : public sp_instr
class sp_instr_set : public sp_instr
{
sp_instr_set(const sp_instr_set &); /* Prevent use of these */
void operator=(sp_instr_set &);
public:
sp_instr_set(uint ip, uint offset, Item *val, enum enum_field_types type)
: sp_instr(ip), m_offset(offset), m_value(val), m_type(type)
{}
virtual ~sp_instr_set()
{}
virtual int execute(THD *thd, uint *nextp);
private:
uint m_offset; // Frame offset
Item *m_value;
enum enum_field_types m_type; // The declared type
}; // class sp_instr_set : public sp_instr
class sp_instr_jump : public sp_instr
{
sp_instr_jump(const sp_instr_jump &); /* Prevent use of these */
void operator=(sp_instr_jump &);
public:
sp_instr_jump(uint ip)
: sp_instr(ip)
{}
sp_instr_jump(uint ip, uint dest)
: sp_instr(ip), m_dest(dest)
{}
virtual ~sp_instr_jump()
{}
virtual int execute(THD *thd, uint *nextp)
{
*nextp= m_dest;
return 0;
}
virtual void
set_destination(uint dest)
{
m_dest= dest;
}
protected:
int m_dest; // Where we will go
}; // class sp_instr_jump : public sp_instr
class sp_instr_jump_if : public sp_instr_jump
{
sp_instr_jump_if(const sp_instr_jump_if &); /* Prevent use of these */
void operator=(sp_instr_jump_if &);
public:
sp_instr_jump_if(uint ip, Item *i)
: sp_instr_jump(ip), m_expr(i)
{}
sp_instr_jump_if(uint ip, Item *i, uint dest)
: sp_instr_jump(ip, dest), m_expr(i)
{}
virtual ~sp_instr_jump_if()
{}
virtual int execute(THD *thd, uint *nextp);
private:
Item *m_expr; // The condition
}; // class sp_instr_jump_if : public sp_instr_jump
class sp_instr_jump_if_not : public sp_instr_jump
{
sp_instr_jump_if_not(const sp_instr_jump_if_not &); /* Prevent use of these */
void operator=(sp_instr_jump_if_not &);
public:
sp_instr_jump_if_not(uint ip, Item *i)
: sp_instr_jump(ip), m_expr(i)
{}
sp_instr_jump_if_not(uint ip, Item *i, uint dest)
: sp_instr_jump(ip, dest), m_expr(i)
{}
virtual ~sp_instr_jump_if_not()
{}
virtual int execute(THD *thd, uint *nextp);
private:
Item *m_expr; // The condition
}; // class sp_instr_jump_if_not : public sp_instr_jump
#endif /* _SP_HEAD_H_ */

120
sql/sp_pcontext.cc Normal file
View File

@ -0,0 +1,120 @@
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef __GNUC__
#pragma implementation
#endif
#if defined(WIN32) || defined(__WIN__)
#undef SAFEMALLOC /* Problems with threads */
#endif
#include "mysql_priv.h"
#include "sp_pcontext.h"
#include "sp_head.h"
sp_pcontext::sp_pcontext()
: m_params(0), m_framesize(0), m_i(0), m_genlab(0)
{
m_pvar_size = 16;
m_pvar = (sp_pvar_t *)my_malloc(m_pvar_size * sizeof(sp_pvar_t), MYF(MY_WME));
if (m_pvar)
memset(m_pvar, 0, m_pvar_size * sizeof(sp_pvar_t));
m_label.empty();
}
void
sp_pcontext::grow()
{
uint sz = m_pvar_size + 8;
sp_pvar_t *a = (sp_pvar_t *)my_realloc((char *)m_pvar,
sz * sizeof(sp_pvar_t),
MYF(MY_WME | MY_ALLOW_ZERO_PTR));
if (a)
{
m_pvar_size = sz;
m_pvar = a;
}
}
/* This does a linear search (from newer to older variables, in case
** we have shadowed names).
** It's possible to have a more efficient allocation and search method,
** but it might not be worth it. The typical number of parameters and
** variables will in most cases be low (a handfull).
** And this is only called during parsing.
*/
sp_pvar_t *
sp_pcontext::find_pvar(LEX_STRING *name)
{
String n(name->str, name->length, default_charset_info);
uint i = m_i;
while (i-- > 0)
{
if (stringcmp(&n, m_pvar[i].name->const_string()) == 0)
return m_pvar + i;
}
return NULL;
}
void
sp_pcontext::push(LEX_STRING *name, enum enum_field_types type,
sp_param_mode_t mode)
{
if (m_i >= m_pvar_size)
grow();
if (m_i < m_pvar_size)
{
if (m_i == m_framesize)
m_framesize += 1;
m_pvar[m_i].name= new Item_string(name->str, name->length,
default_charset_info);
m_pvar[m_i].type= type;
m_pvar[m_i].mode= mode;
m_pvar[m_i].offset= m_i;
m_pvar[m_i].isset= (mode == sp_param_out ? FALSE : TRUE);
m_i += 1;
}
}
sp_label_t *
sp_pcontext::push_label(char *name, uint ip)
{
sp_label_t *lab = (sp_label_t *)my_malloc(sizeof(sp_label_t), MYF(MY_WME));
if (lab)
{
lab->name= name;
lab->ip= ip;
m_label.push_front(lab);
}
return lab;
}
sp_label_t *
sp_pcontext::find_label(char *name)
{
List_iterator_fast<sp_label_t> li(m_label);
sp_label_t *lab;
while ((lab= li++))
if (strcasecmp(name, lab->name) == 0)
return lab;
return NULL;
}

155
sql/sp_pcontext.h Normal file
View File

@ -0,0 +1,155 @@
/* -*- C++ -*- */
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _SP_PCONTEXT_H_
#define _SP_PCONTEXT_H_
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
typedef enum
{
sp_param_in,
sp_param_out,
sp_param_inout
} sp_param_mode_t;
typedef struct
{
Item_string *name;
enum enum_field_types type;
sp_param_mode_t mode;
uint offset; // Offset in current frame
my_bool isset;
} sp_pvar_t;
typedef struct sp_label
{
char *name;
uint ip; // Instruction index
} sp_label_t;
class sp_pcontext : public Sql_alloc
{
sp_pcontext(const sp_pcontext &); /* Prevent use of these */
void operator=(sp_pcontext &);
public:
sp_pcontext();
inline uint
max_framesize()
{
return m_framesize;
}
inline uint
current_framesize()
{
return m_i;
}
inline uint
params()
{
return m_params;
}
// Set the number of parameters to the current esize
inline void
set_params()
{
m_params= m_i;
}
inline void
set_type(uint i, enum enum_field_types type)
{
if (i < m_i)
m_pvar[i].type= type;
}
inline void
set_isset(uint i, my_bool val)
{
if (i < m_i)
m_pvar[i].isset= val;
}
void
push(LEX_STRING *name, enum enum_field_types type, sp_param_mode_t mode);
// Pop the last 'num' slots of the frame
inline void
pop(uint num = 1)
{
if (num < m_i)
m_i -= num;
}
// Find by name
sp_pvar_t *
find_pvar(LEX_STRING *name);
// Find by index
sp_pvar_t *
find_pvar(uint i)
{
if (i >= m_i)
return NULL;
return m_pvar+i;
}
sp_label_t *
push_label(char *name, uint ip);
sp_label_t *
find_label(char *name);
inline sp_label_t *
last_label()
{
return m_label.head();
}
inline sp_label_t *
pop_label()
{
return m_label.pop();
}
private:
uint m_params; // The number of parameters
uint m_framesize; // The maximum framesize
uint m_i; // The current index (during parsing)
sp_pvar_t *m_pvar;
uint m_pvar_size; // Current size of m_pvar.
void
grow();
List<sp_label_t> m_label; // The label list
uint m_genlab; // Gen. label counter
}; // class sp_pcontext : public Sql_alloc
#endif /* _SP_PCONTEXT_H_ */

82
sql/sp_rcontext.h Normal file
View File

@ -0,0 +1,82 @@
/* -*- C++ -*- */
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _SP_RCONTEXT_H_
#define _SP_RCONTEXT_H_
class sp_rcontext : public Sql_alloc
{
sp_rcontext(const sp_rcontext &); /* Prevent use of these */
void operator=(sp_rcontext &);
public:
sp_rcontext(uint size)
: m_count(0), m_size(size)
{
m_frame = (Item **)sql_alloc(size * sizeof(Item*));
m_outs = (int *)sql_alloc(size * sizeof(int));
}
~sp_rcontext()
{
// Not needed?
//sql_element_free(m_frame);
}
inline void
push_item(Item *i)
{
if (m_count < m_size)
m_frame[m_count++] = i;
}
inline void
set_item(uint idx, Item *i)
{
if (idx < m_count)
m_frame[idx] = i;
}
inline Item *
get_item(uint idx)
{
return m_frame[idx];
}
inline void
set_oindex(uint idx, int oidx)
{
m_outs[idx] = oidx;
}
inline int
get_oindex(uint idx)
{
return m_outs[idx];
}
private:
uint m_count;
uint m_size;
Item **m_frame;
int *m_outs;
}; // class sp_rcontext : public Sql_alloc
#endif /* _SP_RCONTEXT_H_ */

52
sql/sql_class.cc
View File

@ -35,6 +35,7 @@
#include <io.h>
#endif
#include <mysys_err.h>
#include <sp_rcontext.h>
/*****************************************************************************
@ -80,7 +81,7 @@ extern "C" void free_user_var(user_var_entry *entry)
THD::THD():user_time(0), is_fatal_error(0),
last_insert_id_used(0),
insert_id_used(0), rand_used(0), in_lock_tables(0),
global_read_lock(0), bootstrap(0)
global_read_lock(0), bootstrap(0), spcont(NULL)
{
host=user=priv_user=db=query=ip=0;
host_or_ip="unknown ip";
@ -967,8 +968,9 @@ bool select_exists_subselect::send_data(List<Item> &items)
int select_dumpvar::prepare(List<Item> &list, SELECT_LEX_UNIT *u)
{
List_iterator_fast<Item> li(list);
List_iterator_fast<LEX_STRING> gl(var_list);
List_iterator_fast<my_var> gl(var_list);
Item *item;
my_var *mv;
LEX_STRING *ls;
if (var_list.elements != list.elements)
{
@ -978,19 +980,38 @@ int select_dumpvar::prepare(List<Item> &list, SELECT_LEX_UNIT *u)
unit=u;
while ((item=li++))
{
ls= gl++;
Item_func_set_user_var *xx = new Item_func_set_user_var(*ls,item);
xx->fix_fields(thd,(TABLE_LIST*) thd->lex.select_lex.table_list.first,&item);
xx->fix_length_and_dec();
vars.push_back(xx);
mv=gl++;
ls= &mv->s;
if (mv->local)
{
(void)local_vars.push_back(new Item_splocal(mv->offset));
}
else
{
Item_func_set_user_var *xx = new Item_func_set_user_var(*ls,item);
xx->fix_fields(thd,(TABLE_LIST*) thd->lex.select_lex.table_list.first,&item);
xx->fix_length_and_dec();
vars.push_back(xx);
}
}
return 0;
}
bool select_dumpvar::send_data(List<Item> &items)
{
List_iterator_fast<Item_func_set_user_var> li(vars);
List_iterator_fast<Item_splocal> var_li(local_vars);
List_iterator_fast<my_var> my_li(var_list);
List_iterator_fast<Item> it(items);
Item_func_set_user_var *xx;
Item_splocal *yy;
Item *item;
my_var *zz;
DBUG_ENTER("send_data");
if (unit->offset_limit_cnt)
{ // using limit offset,count
unit->offset_limit_cnt--;
DBUG_RETURN(0);
}
if (unit->offset_limit_cnt)
{ // Using limit offset,count
@ -1002,8 +1023,21 @@ bool select_dumpvar::send_data(List<Item> &items)
my_error(ER_TOO_MANY_ROWS, MYF(0));
DBUG_RETURN(1);
}
while ((xx=li++))
xx->update();
while ((zz=my_li++) && (item=it++))
{
if (zz->local)
{
if ((yy=var_li++))
{
thd->spcont->set_item(yy->get_offset(), item);
}
}
else
{
if ((xx=li++))
xx->update();
}
}
DBUG_RETURN(0);
}

15
sql/sql_class.h
View File

@ -26,6 +26,7 @@
class Query_log_event;
class Load_log_event;
class Slave_log_event;
class sp_rcontext;
enum enum_enable_or_disable { LEAVE_AS_IS, ENABLE, DISABLE };
enum enum_ha_read_modes { RFIRST, RNEXT, RPREV, RLAST, RKEY };
@ -551,6 +552,7 @@ public:
bool volatile killed;
bool prepare_command;
bool tmp_table_used;
sp_rcontext *spcont; // SP runtime context
/*
If we do a purge of binary logs, log index info of the threads
@ -1018,13 +1020,22 @@ public:
bool send_eof();
};
class my_var : public Sql_alloc {
public:
LEX_STRING s;
bool local;
uint offset;
my_var (LEX_STRING& j, bool i, uint o) : s(j), local(i), offset(o) {}
~my_var() {}
};
class select_dumpvar :public select_result {
ha_rows row_count;
public:
List<LEX_STRING> var_list;
List<my_var> var_list;
List<Item_func_set_user_var> vars;
select_dumpvar(void) { var_list.empty(); vars.empty(); row_count=0;}
List<Item_splocal> local_vars;
select_dumpvar(void) { var_list.empty(); local_vars.empty(); vars.empty(); row_count=0;}
~select_dumpvar() {}
int prepare(List<Item> &list, SELECT_LEX_UNIT *u);
bool send_fields(List<Item> &list, uint flag) {return 0;}

3
sql/sql_lex.cc
View File

@ -157,6 +157,7 @@ LEX *lex_start(THD *thd, uchar *buf,uint length)
{
LEX *lex= &thd->lex;
lex->next_state=STATE_START;
lex->buf= buf;
lex->end_of_query=(lex->ptr=buf)+length;
lex->yylineno = 1;
lex->select_lex.create_refs=lex->in_comment=0;
@ -171,6 +172,8 @@ LEX *lex_start(THD *thd, uchar *buf,uint length)
lex->yacc_yyss=lex->yacc_yyvs=0;
lex->ignore_space=test(thd->variables.sql_mode & MODE_IGNORE_SPACE);
lex->sql_command=SQLCOM_END;
lex->sphead= NULL;
lex->spcont= NULL;
return lex;
}

8
sql/sql_lex.h
View File

@ -21,6 +21,9 @@
class Table_ident;
class sql_exchange;
class LEX_COLUMN;
class sp_head;
class sp_instr;
class sp_pcontext;
/*
The following hack is needed because mysql_yacc.cc does not define
@ -72,6 +75,8 @@ enum enum_sql_command {
SQLCOM_SHOW_WARNS, SQLCOM_EMPTY_QUERY, SQLCOM_SHOW_ERRORS,
SQLCOM_SHOW_COLUMN_TYPES, SQLCOM_SHOW_TABLE_TYPES, SQLCOM_SHOW_PRIVILEGES,
SQLCOM_HELP,
SQLCOM_CREATE_PROCEDURE, SQLCOM_CALL, SQLCOM_DROP_PROCEDURE,
SQLCOM_ALTER_PROCEDURE,
/* This should be the last !!! */
SQLCOM_END
@ -419,6 +424,7 @@ typedef struct st_lex
SELECT_LEX_NODE *current_select;
/* list of all SELECT_LEX */
SELECT_LEX *all_selects_list;
uchar *buf; /* The beginning of string, used by SPs */
uchar *ptr,*tok_start,*tok_end,*end_of_query;
char *length,*dec,*change,*name;
char *backup_dir; /* For RESTORE/BACKUP */
@ -477,6 +483,8 @@ typedef struct st_lex
uint slave_thd_opt;
CHARSET_INFO *charset;
char *help_arg;
sp_head *sphead;
sp_pcontext *spcont;
inline void uncacheable()
{

141
sql/sql_parse.cc
View File

@ -26,6 +26,9 @@
#include "ha_innodb.h"
#endif
#include "sp_head.h"
#include "sp.h"
#ifdef HAVE_OPENSSL
/*
Without SSL the handshake consists of one packet. This packet
@ -1570,7 +1573,7 @@ bool alloc_query(THD *thd, char *packet, ulong packet_length)
** Execute command saved in thd and current_lex->sql_command
****************************************************************************/
void
int
mysql_execute_command(THD *thd)
{
int res= 0;
@ -1602,7 +1605,7 @@ mysql_execute_command(THD *thd)
given and the table list says the query should not be replicated
*/
if (table_rules_on && tables && !tables_ok(thd,tables))
DBUG_VOID_RETURN;
DBUG_RETURN(0);
#ifndef TO_BE_DELETED
/*
This is a workaround to deal with the shortcoming in 3.23.44-3.23.46
@ -1637,7 +1640,7 @@ mysql_execute_command(THD *thd)
{
if (res < 0 || thd->net.report_error)
send_error(thd,thd->killed ? ER_SERVER_SHUTDOWN : 0);
DBUG_VOID_RETURN;
DBUG_RETURN(res);
}
}
}
@ -1650,7 +1653,7 @@ mysql_execute_command(THD *thd)
!tables_ok(thd,tables))
#endif
)
DBUG_VOID_RETURN;
DBUG_RETURN(0);
statistic_increment(com_stat[lex->sql_command],&LOCK_status);
switch (lex->sql_command) {
@ -1689,7 +1692,7 @@ mysql_execute_command(THD *thd)
if (!(result= new select_send()))
{
send_error(thd, ER_OUT_OF_RESOURCES);
DBUG_VOID_RETURN;
goto error;
}
else
thd->send_explain_fields(result);
@ -1943,7 +1946,7 @@ mysql_execute_command(THD *thd)
find_real_table_in_list(tables->next, tables->db, tables->real_name))
{
net_printf(thd,ER_UPDATE_TABLE_USED,tables->real_name);
DBUG_VOID_RETURN;
DBUG_RETURN(-1);
}
if (tables->next)
{
@ -2024,7 +2027,7 @@ mysql_execute_command(THD *thd)
if (thd->locked_tables || thd->active_transaction())
{
send_error(thd,ER_LOCK_OR_ACTIVE_TRANSACTION);
break;
goto error;
}
{
LOCK_ACTIVE_MI;
@ -2037,7 +2040,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_ALTER_TABLE:
#if defined(DONT_ALLOW_SHOW_COMMANDS)
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
break;
goto error;
#else
{
ulong priv=0;
@ -2129,7 +2132,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_BINLOGS:
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
if (check_global_access(thd, SUPER_ACL))
@ -2142,7 +2145,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_CREATE:
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
if (check_db_used(thd, tables) ||
@ -2214,7 +2217,7 @@ mysql_execute_command(THD *thd)
if (select_lex->item_list.elements != lex->value_list.elements)
{
send_error(thd,ER_WRONG_VALUE_COUNT);
DBUG_VOID_RETURN;
goto error;
}
res= mysql_update(thd,tables,
select_lex->item_list,
@ -2235,7 +2238,7 @@ mysql_execute_command(THD *thd)
if (select_lex->item_list.elements != lex->value_list.elements)
{
send_error(thd,ER_WRONG_VALUE_COUNT);
DBUG_VOID_RETURN;
goto error;
}
{
const char *msg= 0;
@ -2271,7 +2274,7 @@ mysql_execute_command(THD *thd)
if (select_lex->item_list.elements != lex->value_list.elements)
{
send_error(thd,ER_WRONG_VALUE_COUNT);
DBUG_VOID_RETURN;
goto error;
}
res = mysql_insert(thd,tables,lex->field_list,lex->many_values,
select_lex->item_list, lex->value_list,
@ -2310,8 +2313,7 @@ mysql_execute_command(THD *thd)
if (find_real_table_in_list(tables->next, tables->db, tables->real_name))
{
net_printf(thd,ER_UPDATE_TABLE_USED,tables->real_name);
DBUG_VOID_RETURN;
lex->select_lex.options |= OPTION_BUFFER_RESULT;
}
/* Skip first table, which is the table we are inserting in */
@ -2471,7 +2473,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_DATABASES:
#if defined(DONT_ALLOW_SHOW_COMMANDS)
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
if ((specialflag & SPECIAL_SKIP_SHOW_DB) &&
check_global_access(thd, SHOW_DB_ACL))
@ -2505,7 +2507,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_LOGS:
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
if (grant_option && check_access(thd, FILE_ACL, any_db))
@ -2518,7 +2520,7 @@ mysql_execute_command(THD *thd)
/* FALL THROUGH */
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
char *db=select_lex->db ? select_lex->db : thd->db;
@ -2554,7 +2556,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_FIELDS:
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
char *db=tables->db;
@ -2579,7 +2581,7 @@ mysql_execute_command(THD *thd)
case SQLCOM_SHOW_KEYS:
#ifdef DONT_ALLOW_SHOW_COMMANDS
send_error(thd,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
DBUG_VOID_RETURN;
goto error;
#else
{
char *db=tables->db;
@ -2949,16 +2951,113 @@ mysql_execute_command(THD *thd)
res= -1;
thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE);
break;
case SQLCOM_CREATE_PROCEDURE:
if (!lex->sphead)
{
send_error(thd, ER_SP_NO_RECURSIVE_CREATE);
goto error;
}
else
{
res= lex->sphead->create(thd);
if (res != 0)
{
send_error(thd, ER_SP_ALREADY_EXISTS);
goto error;
}
send_ok(thd);
}
break;
case SQLCOM_CALL:
{
Item_string *s;
sp_head *sp;
s= (Item_string*)lex->value_list.head();
sp= sp_find_procedure(thd, s);
if (! sp)
{
send_error(thd, ER_SP_DOES_NOT_EXIST);
goto error;
}
else
{
// When executing substatements, they're assumed to send_error when
// it happens, but not to send_ok.
my_bool nsok= thd->net.no_send_ok;
thd->net.no_send_ok= TRUE;
res= sp->execute(thd);
thd->net.no_send_ok= nsok;
if (res == 0)
send_ok(thd);
else
goto error; // Substatement should already have sent error
}
}
break;
case SQLCOM_ALTER_PROCEDURE:
{
Item_string *s;
sp_head *sp;
s= (Item_string*)lex->value_list.head();
sp= sp_find_procedure(thd, s);
if (! sp)
{
send_error(thd, ER_SP_DOES_NOT_EXIST);
goto error;
}
else
{
/* QQ This is an no-op right now, since we haven't
put the characteristics in yet. */
send_ok(thd);
}
}
break;
case SQLCOM_DROP_PROCEDURE:
{
Item_string *s;
sp_head *sp;
s = (Item_string*)lex->value_list.head();
sp = sp_find_procedure(thd, s);
if (! sp)
{
send_error(thd, ER_SP_DOES_NOT_EXIST);
goto error;
}
else
{
String *name = s->const_string();
res= sp_drop_procedure(thd, name->c_ptr(), name->length());
if (res != 0)
{
send_error(thd, ER_SP_DROP_FAILED);
goto error;
}
send_ok(thd);
}
}
break;
default: /* Impossible */
send_ok(thd);
break;
}
thd->proc_info="query end"; // QQ
// We end up here if res == 0 and send_ok() has been done,
// or res != 0 and no send_error() has yet been done.
if (res < 0)
send_error(thd,thd->killed ? ER_SERVER_SHUTDOWN : 0);
DBUG_RETURN(res);
error:
DBUG_VOID_RETURN;
// We end up here if send_error() has already been done.
DBUG_RETURN(-1);
}

560
sql/sql_yacc.yy
View File

@ -35,6 +35,8 @@
#include "sql_acl.h"
#include "lex_symbol.h"
#include "item_create.h"
#include "sp_head.h"
#include "sp_pcontext.h"
#include <myisam.h>
#include <myisammrg.h>
@ -121,6 +123,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token AVG_SYM
%token BEGIN_SYM
%token BINLOG_SYM
%token CALL_SYM
%token CHANGE
%token CLIENT_SYM
%token COMMENT_SYM
@ -201,6 +204,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token CONVERT_SYM
%token DATABASES
%token DATA_SYM
%token DECLARE_SYM
%token DEFAULT
%token DELAYED_SYM
%token DELAY_KEY_WRITE_SYM
@ -246,6 +250,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token INFILE
%token INNER_SYM
%token INNOBASE_SYM
%token INOUT_SYM
%token INTO
%token IN_SYM
%token ISOLATION
@ -260,6 +265,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token LIKE
%token LINES
%token LOCAL_SYM
%token LOCATOR_SYM
%token LOG_SYM
%token LOGS_SYM
%token LONG_NUM
@ -300,6 +306,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token OR
%token OR_OR_CONCAT
%token ORDER_SYM
%token OUT_SYM
%token OUTER
%token OUTFILE
%token DUMPFILE
@ -338,6 +345,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token SIMPLE_SYM
%token SHUTDOWN
%token SPATIAL_SYM
%token SPECIFIC_SYM
%token SSL_SYM
%token STARTING
%token STATUS_SYM
@ -526,6 +534,18 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
%token SQL_SMALL_RESULT
%token SQL_BUFFER_RESULT
%token CURSOR_SYM
%token ELSEIF_SYM
%token ITERATE_SYM
%token LEAVE_SYM
%token LOOP_SYM
%token REPEAT_SYM
%token UNTIL_SYM
%token WHILE_SYM
%token ASENSITIVE_SYM
%token INSENSITIVE_SYM
%token SENSITIVE_SYM
%token ISSUER_SYM
%token SUBJECT_SYM
%token CIPHER_SYM
@ -673,8 +693,12 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
union_clause union_list union_option
precision subselect_start opt_and
subselect_end select_var_list select_var_list_init help opt_len
statement
END_OF_INPUT
%type <NONE> call sp_proc_stmts sp_proc_stmt
%type <num> sp_decls sp_decl sp_decl_idents sp_opt_inout
%type <NONE>
'-' '+' '*' '/' '%' '(' ')'
',' '!' '{' '}' '&' '|' AND OR OR_OR_CONCAT BETWEEN_SYM CASE_SYM
@ -700,10 +724,16 @@ query:
| verb_clause END_OF_INPUT {};
verb_clause:
statement
| begin
;
/* Verb clauses, except begin */
statement:
alter
| analyze
| backup
| begin
| call
| change
| check
| commit
@ -885,7 +915,405 @@ create:
lex->udf.returns=(Item_result) $7;
lex->udf.dl=$9.str;
}
;
| CREATE PROCEDURE ident
{
LEX *lex= Lex;
lex->spcont = new sp_pcontext();
lex->sphead = new sp_head(&$3, lex);
}
'(' sp_dparam_list ')'
{
Lex->spcont->set_params();
}
sp_proc_stmt
{
Lex->sql_command= SQLCOM_CREATE_PROCEDURE;
}
;
call:
CALL_SYM ident
{
LEX *lex = Lex;
lex->sql_command= SQLCOM_CALL;
lex->value_list.empty();
lex->value_list.push_back(
(Item*)new Item_string($2.str, $2.length, default_charset_info));
}
'(' sp_cparam_list ')' {}
;
/* CALL parameters */
sp_cparam_list:
/* Empty */
| sp_cparams
;
sp_cparams:
sp_cparams ',' expr
{
Lex->value_list.push_back($3);
}
| expr
{
Lex->value_list.push_back($1);
}
;
/* SP parameter declaration list */
sp_dparam_list:
/* Empty */
| sp_dparams
;
sp_dparams:
sp_dparams ',' sp_dparam
| sp_dparam
;
sp_dparam:
sp_opt_inout ident type sp_opt_locator
{
Lex->spcont->push(&$2,
(enum enum_field_types)$3,
(sp_param_mode_t)$1);
}
;
sp_opt_inout:
/* Empty */ { $$= sp_param_in; }
| IN_SYM { $$= sp_param_in; }
| OUT_SYM { $$= sp_param_out; }
| INOUT_SYM { $$= sp_param_inout; }
;
sp_opt_locator:
/* Empty */
| AS LOCATOR_SYM
;
sp_proc_stmts:
sp_proc_stmt ';'
| sp_proc_stmts sp_proc_stmt ';'
;
sp_decls:
/* Empty */
{
$$= 0;
}
| sp_decls sp_decl ';'
{
$$= $1 + $2;
}
;
sp_decl:
DECLARE_SYM sp_decl_idents type
{
LEX *lex= Lex;
uint max= lex->spcont->current_framesize();
for (uint i = max-$2 ; i < max ; i++)
{
lex->spcont->set_type(i, (enum enum_field_types)$3);
lex->spcont->set_isset(i, FALSE);
}
$$= $2;
}
;
sp_decl_idents:
ident
{
Lex->spcont->push(&$1, (enum_field_types)0, sp_param_in);
$$= 1;
}
| sp_decl_idents ',' ident
{
Lex->spcont->push(&$3, (enum_field_types)0, sp_param_in);
$$= $1 + 1;
}
;
sp_proc_stmt:
{
Lex->sphead->reset_lex(YYTHD);
}
statement
{
LEX *lex= Lex;
if (lex->sql_command == SQLCOM_SELECT && !lex->result)
{
send_error(YYTHD, ER_SP_BADSELECT);
YYABORT;
}
else
{
/* Don't add an instruction for empty SET statements.
** (This happens if the SET only contained local variables,
** which get their set instructions generated separately.)
*/
if (lex->sql_command != SQLCOM_SET_OPTION ||
!lex->var_list.is_empty())
{
sp_instr_stmt *i= new sp_instr_stmt(lex->sphead->instructions());
i->set_lex(lex);
lex->sphead->add_instr(i);
}
lex->sphead->restore_lex(YYTHD);
}
}
| IF sp_if END IF {}
| CASE_SYM WHEN_SYM
{
Lex->sphead->m_simple_case= FALSE;
}
sp_case END CASE_SYM {}
| CASE_SYM expr WHEN_SYM
{
/* We "fake" this by using an anonymous variable which we
set to the expression. Note that all WHENs are evaluate
at the same frame level, so we then know that it's the
top-most variable in the frame. */
LEX *lex= Lex;
uint offset= lex->spcont->current_framesize();
sp_instr_set *i = new sp_instr_set(lex->sphead->instructions(),
offset, $2, MYSQL_TYPE_STRING);
LEX_STRING dummy;
dummy.str= (char *)"";
dummy.length= 0;
lex->spcont->push(&dummy, MYSQL_TYPE_STRING, sp_param_in);
lex->sphead->add_instr(i);
lex->sphead->m_simple_case= TRUE;
}
sp_case END CASE_SYM
{
Lex->spcont->pop();
}
| sp_labeled_control
{}
| { /* Unlabeled controls get a secret label. */
LEX *lex= Lex;
lex->spcont->push_label((char *)"", lex->sphead->instructions());
}
sp_unlabeled_control
{
LEX *lex= Lex;
lex->sphead->backpatch(lex->spcont->pop_label());
}
| LEAVE_SYM IDENT
{
LEX *lex= Lex;
sp_head *sp = lex->sphead;
sp_label_t *lab= lex->spcont->find_label($2.str);
if (! lab)
{
send_error(YYTHD, ER_SP_LILABEL_MISMATCH, "LEAVE");
YYABORT;
}
else
{
sp_instr_jump *i= new sp_instr_jump(sp->instructions());
sp->push_backpatch(i, lab); /* Jumping forward */
sp->add_instr(i);
}
}
| ITERATE_SYM IDENT
{
LEX *lex= Lex;
sp_label_t *lab= lex->spcont->find_label($2.str);
if (! lab)
{
send_error(YYTHD, ER_SP_LILABEL_MISMATCH, "ITERATE");
YYABORT;
}
else
{
uint ip= lex->sphead->instructions();
sp_instr_jump *i= new sp_instr_jump(ip, lab->ip); /* Jump back */
lex->sphead->add_instr(i);
}
}
;
sp_if:
expr THEN_SYM
{
sp_head *sp= Lex->sphead;
sp_pcontext *ctx= Lex->spcont;
uint ip= sp->instructions();
sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, $1);
sp->push_backpatch(i, ctx->push_label((char *)"", 0));
sp->add_instr(i);
}
sp_proc_stmts
{
sp_head *sp= Lex->sphead;
sp_pcontext *ctx= Lex->spcont;
uint ip= sp->instructions();
sp_instr_jump *i = new sp_instr_jump(ip);
sp->add_instr(i);
sp->backpatch(ctx->pop_label());
sp->push_backpatch(i, ctx->push_label((char *)"", 0));
}
sp_elseifs
{
LEX *lex= Lex;
lex->sphead->backpatch(lex->spcont->pop_label());
}
;
sp_elseifs:
/* Empty */
| ELSEIF_SYM sp_if
| ELSE sp_proc_stmts
;
sp_case:
expr THEN_SYM
{
sp_head *sp= Lex->sphead;
sp_pcontext *ctx= Lex->spcont;
uint ip= sp->instructions();
sp_instr_jump_if_not *i;
if (! sp->m_simple_case)
i= new sp_instr_jump_if_not(ip, $1);
else
{ /* Simple case: <caseval> = <whenval> */
Item *var= (Item*) new Item_splocal(ctx->current_framesize()-1);
Item *expr= Item_bool_func2::eq_creator(var, $1);
i= new sp_instr_jump_if_not(ip, expr);
}
sp->push_backpatch(i, ctx->push_label((char *)"", 0));
sp->add_instr(i);
}
sp_proc_stmts
{
sp_head *sp= Lex->sphead;
sp_pcontext *ctx= Lex->spcont;
uint ip= sp->instructions();
sp_instr_jump *i = new sp_instr_jump(ip);
sp->add_instr(i);
sp->backpatch(ctx->pop_label());
sp->push_backpatch(i, ctx->push_label((char *)"", 0));
}
sp_whens
{
LEX *lex= Lex;
lex->sphead->backpatch(lex->spcont->pop_label());
}
;
sp_whens:
/* Empty */
| WHEN_SYM sp_case
| ELSE sp_proc_stmts
;
sp_labeled_control:
IDENT ':'
{
LEX *lex= Lex;
sp_label_t *lab= lex->spcont->find_label($1.str);
if (lab)
{
send_error(YYTHD, ER_SP_LABEL_REDEFINE);
YYABORT;
}
else
{
lex->spcont->push_label($1.str,
lex->sphead->instructions());
}
}
sp_unlabeled_control IDENT
{
LEX *lex= Lex;
sp_label_t *lab= lex->spcont->find_label($5.str);
if (! lab || strcasecmp($5.str, lab->name) != 0)
{
send_error(YYTHD, ER_SP_LABEL_MISMATCH);
YYABORT;
}
else
{
lex->spcont->pop_label();
lex->sphead->backpatch(lab);
}
}
;
sp_unlabeled_control:
BEGIN_SYM
sp_decls
sp_proc_stmts
END
{ /* QQ This is just a dummy for grouping declarations and statements
together. No [[NOT] ATOMIC] yet, and we need to figure out how
make it coexist with the existing BEGIN COMMIT/ROLLBACK. */
Lex->spcont->pop($2);
}
| LOOP_SYM
sp_proc_stmts END LOOP_SYM
{
LEX *lex= Lex;
uint ip= lex->sphead->instructions();
sp_label_t *lab= lex->spcont->last_label(); /* Jumping back */
sp_instr_jump *i = new sp_instr_jump(ip, lab->ip);
lex->sphead->add_instr(i);
}
| WHILE_SYM expr DO_SYM
{
LEX *lex= Lex;
sp_head *sp= lex->sphead;
uint ip= sp->instructions();
sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, $2);
/* Jumping forward */
sp->push_backpatch(i, lex->spcont->last_label());
sp->add_instr(i);
}
sp_proc_stmts END WHILE_SYM
{
LEX *lex= Lex;
uint ip= lex->sphead->instructions();
sp_label_t *lab= lex->spcont->last_label(); /* Jumping back */
sp_instr_jump *i = new sp_instr_jump(ip, lab->ip);
lex->sphead->add_instr(i);
}
| REPEAT_SYM sp_proc_stmts UNTIL_SYM expr END REPEAT_SYM
{
LEX *lex= Lex;
uint ip= lex->sphead->instructions();
sp_label_t *lab= lex->spcont->last_label(); /* Jumping back */
sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, $4, lab->ip);
lex->sphead->add_instr(i);
}
;
create2:
'(' field_list ')' opt_create_table_options create3 {}
@ -1457,8 +1885,27 @@ alter:
LEX *lex=Lex;
lex->sql_command=SQLCOM_ALTER_DB;
lex->name=$3.str;
};
}
| ALTER PROCEDURE opt_specific ident
/* QQ Characteristics missing for now */
opt_restrict
{
LEX *lex=Lex;
/* This is essensially an no-op right now, since we haven't
put the characteristics in yet. */
lex->sql_command= SQLCOM_ALTER_PROCEDURE;
lex->value_list.empty();
lex->value_list.push_back(
(Item*)new Item_string($4.str, $4.length, default_charset_info));
}
;
opt_specific:
/* Empty */
|
SPECIFIC_SYM
;
alter_list:
| alter_list_item
@ -2134,6 +2581,8 @@ simple_expr:
{ $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);}
| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
{ $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);}
| REPEAT_SYM '(' expr ',' expr ')'
{ $$= new Item_func_repeat($3,$5); }
| ATAN '(' expr ')'
{ $$= new Item_func_atan($3); }
| ATAN '(' expr ',' expr ')'
@ -2989,10 +3438,29 @@ select_var_list:
| select_var_ident {}
;
select_var_ident: '@' ident_or_text
select_var_ident:
'@' ident_or_text
{
LEX *lex=Lex;
if (lex->result && ((select_dumpvar *)lex->result)->var_list.push_back((LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING))))
if (lex->result)
((select_dumpvar *)lex->result)->var_list.push_back( new my_var($2,0,0));
else
YYABORT;
}
| ident_or_text
{
LEX *lex=Lex;
if (!lex->spcont)
YYABORT;
sp_pvar_t *t;
if (!(t=lex->spcont->find_pvar(&$1)))
{
send_error(lex->thd, ER_SYNTAX_ERROR);
YYABORT;
}
if (lex->result)
((select_dumpvar *)lex->result)->var_list.push_back( new my_var($1,1,t->offset));
else
YYABORT;
}
;
@ -3077,7 +3545,16 @@ drop:
LEX *lex=Lex;
lex->sql_command = SQLCOM_DROP_FUNCTION;
lex->udf.name = $3;
};
}
| DROP PROCEDURE ident opt_restrict
{
LEX *lex=Lex;
lex->sql_command = SQLCOM_DROP_PROCEDURE;
lex->value_list.empty();
lex->value_list.push_back(
(Item*)new Item_string($3.str, $3.length, default_charset_info));
}
;
table_list:
@ -3134,7 +3611,6 @@ replace:
}
insert_field_spec
{}
{}
;
insert_lock_option:
@ -3835,8 +4311,25 @@ order_ident:
simple_ident:
ident
{
SELECT_LEX_NODE *sel=Select;
$$ = !sel->create_refs || sel->get_in_sum_expr() > 0 ? (Item*) new Item_field(NullS,NullS,$1.str) : (Item*) new Item_ref(NullS,NullS,$1.str);
sp_pvar_t *spv;
LEX *lex = Lex;
sp_pcontext *spc = lex->spcont;
if (spc && (spv = spc->find_pvar(&$1)))
{ /* We're compiling a stored procedure and found a variable */
if (lex->sql_command != SQLCOM_CALL && ! spv->isset)
{
send_error(YYTHD, ER_SP_UNINIT_VAR);
YYABORT;
}
else
$$ = (Item*) new Item_splocal(spv->offset);
}
else
{
SELECT_LEX_NODE *sel=Select;
$$ = !sel->create_refs || sel->get_in_sum_expr() > 0 ? (Item*) new Item_field(NullS,NullS,$1.str) : (Item*) new Item_ref(NullS,NullS,$1.str);
}
}
| ident '.' ident
{
@ -4145,15 +4638,12 @@ opt_var_ident_type:
;
option_value:
'@' ident_or_text equal expr
{
Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
}
| internal_variable_name equal set_expr_or_default
'@' ident_or_text equal expr
{
LEX *lex=Lex;
lex->var_list.push_back(new set_var(lex->option_type, $1, $3));
Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
}
| internal_or_splocal
{}
| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
{
LEX *lex=Lex;
@ -4167,12 +4657,12 @@ option_value:
new Item_int((int32) $4)));
}
| CHAR_SYM SET opt_equal set_expr_or_default
{
LEX *lex=Lex;
lex->var_list.push_back(new set_var(lex->option_type,
find_sys_var("convert_character_set"),
$4));
}
{
LEX *lex=Lex;
lex->var_list.push_back(new set_var(lex->option_type,
find_sys_var("convert_character_set"),
$4));
}
| PASSWORD equal text_or_password
{
THD *thd=YYTHD;
@ -4199,6 +4689,32 @@ internal_variable_name:
}
;
internal_or_splocal:
ident equal set_expr_or_default
{
LEX *lex= Lex;
sp_pcontext *spc= lex->spcont;
sp_pvar_t *spv;
if (!spc || !(spv = spc->find_pvar(&$1)))
{ /* Not an SP local variable */
sys_var *tmp= find_sys_var($1.str, $1.length);
if (!tmp)
YYABORT;
lex->var_list.push_back(new set_var(lex->option_type, tmp, $3));
}
else
{ /* An SP local variable */
sp_instr_set *i= new sp_instr_set(lex->sphead->instructions(),
spv->offset, $3, spv->type);
lex->sphead->add_instr(i);
spv->isset= TRUE;
}
}
;
isolation_types:
READ_SYM UNCOMMITTED_SYM { $$= ISO_READ_UNCOMMITTED; }
| READ_SYM COMMITTED_SYM { $$= ISO_READ_COMMITTED; }