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MDEV-7113 difference between check_vcol_func_processor and check_partition_func_processor

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MDEV-6789 segfault in Item_func_from_unixtime::get_date on updating table with virtual columns

* prohibit VALUES in partitioning expression
* prohibit user and system variables in virtual column expressions
* fix Item_func_date_format to cache locale (for %M/%W to return the same as MONTHNAME/DAYNAME)
* fix Item_func_from_unixtime to cache time_zone directly, not THD (and not to crash)
* added tests for other incorrectly allowed (in vcols) functions to see that they don't crash
This commit is contained in:
Sergei Golubchik 2014-11-18 15:42:40 +01:00
parent 84f25c25f2
commit 5d0122bd77
8 changed files with 155 additions and 15 deletions
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5
mysql-test/r/partition_error.result
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@ -1754,3 +1754,8 @@ PARTITION pmax VALUES LESS THAN MAXVALUE);
ERROR HY000: Constant, random or timezone-dependent expressions in (sub)partitioning function are not allowed
DROP TABLE t1;
End of 5.1 tests
create table t1 (a int) partition by list (values(a) div 1) (partition p0 values in (0), partition p1 values in (1));
ERROR HY000: This partition function is not allowed
create table t1 (a int) partition by list (uuid_short()) (partition p0 values in (0), partition p1 values in (1));
ERROR 42000: Constant, random or timezone-dependent expressions in (sub)partitioning function are not allowed near ') (partition p0 values in (0), partition p1 values in (1))' at line 1
End of 5.5 tests

67
mysql-test/suite/vcol/r/not_supported.result Normal file
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@ -0,0 +1,67 @@
set lc_time_names = 'es_MX';
set time_zone='+10:00';
set div_precision_increment=20;
create table t1 (a int, b int, v decimal(20,19) as (a/3));
create table t2 (a int, b int, v int as (a+@a));
ERROR HY000: Function or expression is not allowed for column 'v'
create table t3 (a int, b int, v int as (a+@@error_count));
ERROR HY000: Function or expression is not allowed for column 'v'
create table t4 (a int, b int, v int as (@a:=a));
ERROR HY000: Function or expression is not allowed for column 'v'
create table t5 (a int, b int, v varchar(100) as (monthname(a)));
create table t6 (a int, b int, v varchar(100) as (dayname(a)));
create table t7 (a int, b int, v varchar(100) as (date_format(a, '%W %a %M %b')));
create table t8 (a int, b int, v varchar(100) as (from_unixtime(a)));
insert t1 (a,b) values (1,2);
insert t5 (a,b) values (20141010,2);
insert t6 (a,b) values (20141010,2);
insert t7 (a,b) values (20141010,2);
insert t8 (a,b) values (1234567890,2);
select * from t1;
a b v
1 2 0.3333333333333333333
select * from t5;
a b v
20141010 2 octubre
select * from t6;
a b v
20141010 2 viernes
select * from t7;
a b v
20141010 2 viernes vie octubre oct
select * from t8;
a b v
1234567890 2 2009-02-14 09:31:30
set time_zone='+1:00';
select * from t1;
a b v
1 2 0.3333333333333333333
select * from t5;
a b v
20141010 2 octubre
select * from t6;
a b v
20141010 2 viernes
select * from t7;
a b v
20141010 2 viernes vie octubre oct
select * from t8;
a b v
1234567890 2 2009-02-14 09:31:30
flush tables;
select * from t1;
a b v
1 2 0.3333333330000000000
select * from t5;
a b v
20141010 2 October
select * from t6;
a b v
20141010 2 Friday
select * from t7;
a b v
20141010 2 Friday Fri October Oct
select * from t8;
a b v
1234567890 2 2009-02-14 00:31:30
drop table t1, t5, t6, t7, t8;

58
mysql-test/suite/vcol/t/not_supported.test Normal file
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@ -0,0 +1,58 @@
#
# MDEV-7113 difference between check_vcol_func_processor and check_partition_func_processor
#
# the following functions must not be supported in virtual columns.
# but for compatibility reasons it won't be done in a GA version,
# we'll only fix most critical issues (inconsistent results, crashes)
connect (con1, localhost, root);
set lc_time_names = 'es_MX';
set time_zone='+10:00';
set div_precision_increment=20;
create table t1 (a int, b int, v decimal(20,19) as (a/3));
--error ER_VIRTUAL_COLUMN_FUNCTION_IS_NOT_ALLOWED
create table t2 (a int, b int, v int as (a+@a));
--error ER_VIRTUAL_COLUMN_FUNCTION_IS_NOT_ALLOWED
create table t3 (a int, b int, v int as (a+@@error_count));
--error ER_VIRTUAL_COLUMN_FUNCTION_IS_NOT_ALLOWED
create table t4 (a int, b int, v int as (@a:=a));
create table t5 (a int, b int, v varchar(100) as (monthname(a)));
create table t6 (a int, b int, v varchar(100) as (dayname(a)));
create table t7 (a int, b int, v varchar(100) as (date_format(a, '%W %a %M %b')));
create table t8 (a int, b int, v varchar(100) as (from_unixtime(a)));
insert t1 (a,b) values (1,2);
insert t5 (a,b) values (20141010,2);
insert t6 (a,b) values (20141010,2);
insert t7 (a,b) values (20141010,2);
insert t8 (a,b) values (1234567890,2);
select * from t1;
select * from t5;
select * from t6;
select * from t7;
select * from t8;
disconnect con1;
connection default;
set time_zone='+1:00';
select * from t1;
select * from t5;
select * from t6;
select * from t7;
select * from t8;
flush tables;
select * from t1;
select * from t5;
select * from t6;
select * from t7;
select * from t8;
drop table t1, t5, t6, t7, t8;

11
mysql-test/t/partition_error.test
View File

@ -2005,3 +2005,14 @@ PARTITION pmax VALUES LESS THAN MAXVALUE);
DROP TABLE t1;
--echo End of 5.1 tests
#
# MDEV-7113 difference between check_vcol_func_processor and check_partition_func_processor
#
--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
create table t1 (a int) partition by list (values(a) div 1) (partition p0 values in (0), partition p1 values in (1));
--error ER_PARSE_ERROR
create table t1 (a int) partition by list (uuid_short()) (partition p0 values in (0), partition p1 values in (1));
--echo End of 5.5 tests

1
sql/item.h
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@ -3939,6 +3939,7 @@ public:
return arg->walk(processor, walk_subquery, args) ||
(this->*processor)(args);
}
bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
bool check_vcol_func_processor(uchar *arg)
{
return trace_unsupported_by_check_vcol_func_processor("values");

4
sql/item_func.h
View File

@ -1696,6 +1696,7 @@ public:
bool register_field_in_bitmap(uchar *arg);
bool set_entry(THD *thd, bool create_if_not_exists);
void cleanup();
bool check_vcol_func_processor(uchar *int_arg) {return TRUE;}
};
@ -1735,6 +1736,7 @@ public:
{
return this;
}
bool check_vcol_func_processor(uchar *int_arg) { return TRUE;}
};
@ -1817,6 +1819,7 @@ public:
bool eq(const Item *item, bool binary_cmp) const;
void cleanup();
bool check_vcol_func_processor(uchar *int_arg) { return TRUE;}
};
@ -2090,7 +2093,6 @@ public:
longlong val_int();
void fix_length_and_dec()
{ max_length= 21; unsigned_flag=1; }
bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());

15
sql/item_timefunc.cc
View File

@ -450,16 +450,14 @@ err:
Create a formated date/time value in a string.
*/
bool make_date_time(DATE_TIME_FORMAT *format, MYSQL_TIME *l_time,
timestamp_type type, String *str)
static bool make_date_time(DATE_TIME_FORMAT *format, MYSQL_TIME *l_time,
timestamp_type type, MY_LOCALE *locale, String *str)
{
char intbuff[15];
uint hours_i;
uint weekday;
ulong length;
const char *ptr, *end;
THD *thd= current_thd;
MY_LOCALE *locale= thd->variables.lc_time_names;
str->length(0);
@ -1726,6 +1724,8 @@ overflow:
void Item_func_date_format::fix_length_and_dec()
{
THD* thd= current_thd;
locale= thd->variables.lc_time_names;
/*
Must use this_item() in case it's a local SP variable
(for ->max_length and ->str_value)
@ -1889,7 +1889,7 @@ String *Item_func_date_format::val_str(String *str)
if (!make_date_time(&date_time_format, &l_time,
is_time_format ? MYSQL_TIMESTAMP_TIME :
MYSQL_TIMESTAMP_DATE,
str))
locale, str))
return str;
null_date:
@ -1900,8 +1900,9 @@ null_date:
void Item_func_from_unixtime::fix_length_and_dec()
{
thd= current_thd;
THD *thd= current_thd;
thd->time_zone_used= 1;
tz= thd->variables.time_zone;
decimals= args[0]->decimals;
Item_temporal_func::fix_length_and_dec();
}
@ -1922,7 +1923,7 @@ bool Item_func_from_unixtime::get_date(MYSQL_TIME *ltime,
if (args[0]->null_value || sign || sec > TIMESTAMP_MAX_VALUE)
return (null_value= 1);
thd->variables.time_zone->gmt_sec_to_TIME(ltime, (my_time_t)sec);
tz->gmt_sec_to_TIME(ltime, (my_time_t)sec);
ltime->second_part= sec_part;

9
sql/item_timefunc.h
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@ -688,6 +688,7 @@ public:
class Item_func_date_format :public Item_str_func
{
MY_LOCALE *locale;
int fixed_length;
const bool is_time_format;
String value;
@ -705,7 +706,7 @@ public:
class Item_func_from_unixtime :public Item_temporal_func
{
THD *thd;
Time_zone *tz;
public:
Item_func_from_unixtime(Item *a) :Item_temporal_func(a) {}
const char *func_name() const { return "from_unixtime"; }
@ -1046,10 +1047,4 @@ public:
bool get_date(MYSQL_TIME *res, ulonglong fuzzy_date);
};
/* Function prototypes */
bool make_date_time(DATE_TIME_FORMAT *format, MYSQL_TIME *l_time,
timestamp_type type, String *str);
#endif /* ITEM_TIMEFUNC_INCLUDED */