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patch for task WL 1941 "NO_C_ESCAPE sql_mode"

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This commit is contained in:
vva@eagle.mysql.r18.ru 2004-07-07 17:26:43 +05:00
parent 731c2acaed
commit e9e5b3547e
6 changed files with 353 additions and 3 deletions
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249
mysql-test/r/sql_mode.result
View File

@ -85,3 +85,252 @@ t1 CREATE TABLE "t1" (
UNIQUE KEY "email" ("email") UNIQUE KEY "email" ("email")
) )
drop table t1; drop table t1;
SET @OLD_SQL_MODE=@@SQL_MODE, @@SQL_MODE='';
show local variables like 'SQL_MODE';
Variable_name Value
sql_mode
CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;
SELECT p, hex(a) FROM t1;
p hex(a)
1 5C
2 0A
3 08
4 0D
5 09
6 78
7 61
8 6161
9 5C61
10 5C6161
11 5F
12 5C5F
13 5C5F
14 5C5C5F
15 5C5C5F
16 25
17 5C25
18 5C25
19 5C5C25
20 5C5C25
delete from t1 where a in ('\n','\r','\t', '\b');
select
masks.p,
masks.a as mask,
examples.a as example
from
t1 as masks
left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;
p mask example
1 \ \
6 x x
7 a a
8 aa aa
9 \a a
10 \aa aa
11 _ %
11 _ a
11 _ x
11 _ \
11 _ _
12 \_ _
13 \_ _
14 \\_ \%
14 \\_ \%
14 \\_ \a
14 \\_ \_
14 \\_ \_
15 \\_ \%
15 \\_ \%
15 \\_ \a
15 \\_ \_
15 \\_ \_
16 % %
16 % a
16 % aa
16 % x
16 % \
16 % \%
16 % \%
16 % \a
16 % \aa
16 % \\%
16 % \\%
16 % \\_
16 % \\_
16 % \_
16 % \_
16 % _
17 \% %
18 \% %
19 \\% \
19 \\% \%
19 \\% \%
19 \\% \a
19 \\% \aa
19 \\% \\%
19 \\% \\%
19 \\% \\_
19 \\% \\_
19 \\% \_
19 \\% \_
20 \\% \
20 \\% \%
20 \\% \%
20 \\% \a
20 \\% \aa
20 \\% \\%
20 \\% \\%
20 \\% \\_
20 \\% \\_
20 \\% \_
20 \\% \_
DROP TABLE t1;
SET @@SQL_MODE='NO_BACKSLASH_ESCAPES';
show local variables like 'SQL_MODE';
Variable_name Value
sql_mode NO_BACKSLASH_ESCAPES
CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;
SELECT p, hex(a) FROM t1;
p hex(a)
1 5C5C
2 5C6E
3 5C62
4 5C72
5 5C74
6 5C78
7 5C61
8 5C6161
9 5C5C61
10 5C5C6161
11 5F
12 5C5F
13 5C5C5F
14 5C5C5C5F
15 5C5C5C5C5F
16 25
17 5C25
18 5C5C25
19 5C5C5C25
20 5C5C5C5C25
delete from t1 where a in ('\n','\r','\t', '\b');
select
masks.p,
masks.a as mask,
examples.a as example
from
t1 as masks
left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;
p mask example
1 \\ \\
6 \x \x
7 \a \a
8 \aa \aa
9 \\a \\a
10 \\aa \\aa
11 _ %
11 _ _
12 \_ \%
12 \_ \a
12 \_ \x
12 \_ \\
12 \_ \_
13 \\_ \\%
13 \\_ \\a
13 \\_ \\_
14 \\\_ \\\%
14 \\\_ \\\_
15 \\\\_ \\\\%
15 \\\\_ \\\\_
16 % %
16 % \%
16 % \a
16 % \aa
16 % \x
16 % \\
16 % \\%
16 % \\a
16 % \\aa
16 % \\\%
16 % \\\\%
16 % \\\\_
16 % \\\_
16 % \\_
16 % \_
16 % _
17 \% \%
17 \% \a
17 \% \aa
17 \% \x
17 \% \\
17 \% \\%
17 \% \\a
17 \% \\aa
17 \% \\\%
17 \% \\\\%
17 \% \\\\_
17 \% \\\_
17 \% \\_
17 \% \_
18 \\% \\
18 \\% \\%
18 \\% \\a
18 \\% \\aa
18 \\% \\\%
18 \\% \\\\%
18 \\% \\\\_
18 \\% \\\_
18 \\% \\_
19 \\\% \\\%
19 \\\% \\\\%
19 \\\% \\\\_
19 \\\% \\\_
20 \\\\% \\\\%
20 \\\\% \\\\_
DROP TABLE t1;
SET @@SQL_MODE=@OLD_SQL_MODE;

95
mysql-test/t/sql_mode.test
View File

@ -28,3 +28,98 @@ set sql_mode="postgresql,oracle,mssql,db2,maxdb";
select @@sql_mode; select @@sql_mode;
show create table t1; show create table t1;
drop table t1; drop table t1;
#
# test for
# WL 1941 "NO_C_ESCAPES sql_mode"
#
# an sql_mode to disable \n, \r, \b, etc escapes in string literals. actually, to
# disable special meaning of backslash completely. It's not in the SQL standard
# and it causes some R/3 tests to fail.
#
SET @OLD_SQL_MODE=@@SQL_MODE, @@SQL_MODE='';
show local variables like 'SQL_MODE';
CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;
SELECT p, hex(a) FROM t1;
delete from t1 where a in ('\n','\r','\t', '\b');
select
masks.p,
masks.a as mask,
examples.a as example
from
t1 as masks
left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;
DROP TABLE t1;
SET @@SQL_MODE='NO_BACKSLASH_ESCAPES';
show local variables like 'SQL_MODE';
CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;
SELECT p, hex(a) FROM t1;
delete from t1 where a in ('\n','\r','\t', '\b');
select
masks.p,
masks.a as mask,
examples.a as example
from
t1 as masks
left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;
DROP TABLE t1;
SET @@SQL_MODE=@OLD_SQL_MODE;

1
sql/mysql_priv.h
View File

@ -272,6 +272,7 @@ extern CHARSET_INFO *national_charset_info, *table_alias_charset;
#define MODE_MYSQL40 (MODE_MYSQL323*2) #define MODE_MYSQL40 (MODE_MYSQL323*2)
#define MODE_ANSI (MODE_MYSQL40*2) #define MODE_ANSI (MODE_MYSQL40*2)
#define MODE_NO_AUTO_VALUE_ON_ZERO (MODE_ANSI*2) #define MODE_NO_AUTO_VALUE_ON_ZERO (MODE_ANSI*2)
#define MODE_NO_BACKSLASH_ESCAPES (MODE_NO_AUTO_VALUE_ON_ZERO*2)
#define RAID_BLOCK_SIZE 1024 #define RAID_BLOCK_SIZE 1024

2
sql/mysqld.cc
View File

@ -223,7 +223,7 @@ const char *sql_mode_names[] =
"NO_DIR_IN_CREATE", "NO_DIR_IN_CREATE",
"POSTGRESQL", "ORACLE", "MSSQL", "DB2", "MAXDB", "NO_KEY_OPTIONS", "POSTGRESQL", "ORACLE", "MSSQL", "DB2", "MAXDB", "NO_KEY_OPTIONS",
"NO_TABLE_OPTIONS", "NO_FIELD_OPTIONS", "MYSQL323", "MYSQL40", "ANSI", "NO_TABLE_OPTIONS", "NO_FIELD_OPTIONS", "MYSQL323", "MYSQL40", "ANSI",
"NO_AUTO_VALUE_ON_ZERO", NullS "NO_AUTO_VALUE_ON_ZERO", "NO_BACKSLASH_ESCAPES", NullS
}; };
TYPELIB sql_mode_typelib= { array_elements(sql_mode_names)-1,"", TYPELIB sql_mode_typelib= { array_elements(sql_mode_names)-1,"",
sql_mode_names }; sql_mode_names };

3
sql/sql_lex.cc
View File

@ -250,7 +250,8 @@ static char *get_text(LEX *lex)
continue; continue;
} }
#endif #endif
if (c == '\\') if (c == '\\' &&
!(lex->thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES))
{ // Escaped character { // Escaped character
found_escape=1; found_escape=1;
if (lex->ptr == lex->end_of_query) if (lex->ptr == lex->end_of_query)

6
sql/sql_yacc.yy
View File

@ -4725,7 +4725,11 @@ having_clause:
opt_escape: opt_escape:
ESCAPE_SYM TEXT_STRING_literal { $$= $2.str; } ESCAPE_SYM TEXT_STRING_literal { $$= $2.str; }
| /* empty */ { $$= (char*) "\\"; }; | /* empty */
{
$$= (char*) ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES)
? "" : "\\");
};
/* /*