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|
drop table if exists t1,t2,v1,v2;
drop view if exists t1,t2,v1,v2;
CREATE TABLE `t1` (
a int not null auto_increment,
`pseudo` varchar(35) character set latin2 NOT NULL default '',
`email` varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY (a),
UNIQUE KEY `email` USING BTREE (`email`)
) ENGINE=HEAP CHARSET=latin1 ROW_FORMAT DYNAMIC;
set @@sql_mode="";
show variables like 'sql_mode';
Variable_name Value
sql_mode
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL auto_increment,
`pseudo` varchar(35) character set latin2 NOT NULL default '',
`email` varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY (`a`),
UNIQUE KEY `email` USING BTREE (`email`)
) ENGINE=MEMORY DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
set @@sql_mode="ansi_quotes";
show variables like 'sql_mode';
Variable_name Value
sql_mode ANSI_QUOTES
show create table t1;
Table Create Table
t1 CREATE TABLE "t1" (
"a" int(11) NOT NULL auto_increment,
"pseudo" varchar(35) character set latin2 NOT NULL default '',
"email" varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY ("a"),
UNIQUE KEY "email" USING BTREE ("email")
) ENGINE=MEMORY DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
set @@sql_mode="no_table_options";
show variables like 'sql_mode';
Variable_name Value
sql_mode NO_TABLE_OPTIONS
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL auto_increment,
`pseudo` varchar(35) character set latin2 NOT NULL default '',
`email` varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY (`a`),
UNIQUE KEY `email` USING BTREE (`email`)
)
set @@sql_mode="no_key_options";
show variables like 'sql_mode';
Variable_name Value
sql_mode NO_KEY_OPTIONS
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL auto_increment,
`pseudo` varchar(35) character set latin2 NOT NULL default '',
`email` varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY (`a`),
UNIQUE KEY `email` (`email`)
) ENGINE=MEMORY DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
set @@sql_mode="no_field_options,mysql323,mysql40";
show variables like 'sql_mode';
Variable_name Value
sql_mode NO_FIELD_OPTIONS,MYSQL323,MYSQL40,HIGH_NOT_PRECEDENCE
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`pseudo` varchar(35) NOT NULL default '',
`email` varchar(60) NOT NULL default '',
PRIMARY KEY (`a`),
UNIQUE KEY `email` (`email`)
) TYPE=HEAP ROW_FORMAT=DYNAMIC
set sql_mode="postgresql,oracle,mssql,db2,maxdb";
select @@sql_mode;
@@sql_mode
PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,POSTGRESQL,ORACLE,MSSQL,DB2,MAXDB,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER
show create table t1;
Table Create Table
t1 CREATE TABLE "t1" (
"a" int(11) NOT NULL,
"pseudo" varchar(35) character set latin2 NOT NULL default '',
"email" varchar(60) character set latin2 NOT NULL default '',
PRIMARY KEY ("a"),
UNIQUE KEY "email" ("email")
)
drop table t1;
CREATE TABLE t1 (
a char(10),
b char(10) collate latin1_bin,
c binary(10)
) character set latin1;
set @@sql_mode="";
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(10) default NULL,
`b` char(10) character set latin1 collate latin1_bin default NULL,
`c` binary(10) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
set @@sql_mode="mysql323";
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(10) default NULL,
`b` char(10) binary default NULL,
`c` binary(10) default NULL
) TYPE=MyISAM
set @@sql_mode="mysql40";
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(10) default NULL,
`b` char(10) binary default NULL,
`c` binary(10) default NULL
) TYPE=MyISAM
drop table t1;
set session sql_mode = '';
create table t1 ( min_num dec(6,6) default .000001);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`min_num` decimal(6,6) default '0.000001'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1 ;
set session sql_mode = 'IGNORE_SPACE';
create table t1 ( min_num dec(6,6) default 0.000001);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`min_num` decimal(6,6) default '0.000001'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1 ;
create table t1 ( min_num dec(6,6) default .000001);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`min_num` decimal(6,6) default '0.000001'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1 ;
set @@SQL_MODE=NULL;
ERROR 42000: Variable 'sql_mode' can't be set to the value of 'NULL'
set session sql_mode=ansi;
create table t1
(f1 integer auto_increment primary key,
f2 timestamp default current_timestamp on update current_timestamp);
show create table t1;
Table Create Table
t1 CREATE TABLE "t1" (
"f1" int(11) NOT NULL auto_increment,
"f2" timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
PRIMARY KEY ("f1")
)
set session sql_mode=no_field_options;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`f1` int(11) NOT NULL,
`f2` timestamp NOT NULL default CURRENT_TIMESTAMP,
PRIMARY KEY (`f1`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
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='NO_BACKSLASH_ESCAPES';
SELECT 'a\\b', 'a\\\"b', 'a''\\b', 'a''\\\"b';
a\\b a\\\"b a'\\b a'\\\"b
a\\b a\\\"b a'\\b a'\\\"b
SELECT "a\\b", "a\\\'b", "a""\\b", "a""\\\'b";
a\\b a\\\'b a"\\b a"\\\'b
a\\b a\\\'b a"\\b a"\\\'b
SET @@SQL_MODE='';
SELECT 'a\\b', 'a\\\"b', 'a''\\b', 'a''\\\"b';
a\b a\"b a'\b a'\"b
a\b a\"b a'\b a'\"b
SELECT "a\\b", "a\\\'b", "a""\\b", "a""\\\'b";
a\b a\'b a"\b a"\'b
a\b a\'b a"\b a"\'b
set session sql_mode = 'NO_ENGINE_SUBSTITUTION';
create table t1 (a int) engine=isam;
ERROR HY000: The 'ISAM' feature is disabled; you need MySQL built with 'ISAM' to have it working
show create table t1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table if exists t1;
Warnings:
Note 1051 Unknown table 't1'
set session sql_mode = '';
create table t1 (a int) engine=isam;
Warnings:
Warning 1266 Using storage engine MyISAM for table 't1'
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
SET @@SQL_MODE='';
create function `foo` () returns int return 5;
show create function `foo`;
Function sql_mode Create Function
foo CREATE FUNCTION `foo`() RETURNS int(11)
return 5
SET @@SQL_MODE='ANSI_QUOTES';
show create function `foo`;
Function sql_mode Create Function
foo CREATE FUNCTION `foo`() RETURNS int(11)
return 5
drop function `foo`;
create function `foo` () returns int return 5;
show create function `foo`;
Function sql_mode Create Function
foo ANSI_QUOTES CREATE FUNCTION "foo"() RETURNS int(11)
return 5
SET @@SQL_MODE='';
show create function `foo`;
Function sql_mode Create Function
foo ANSI_QUOTES CREATE FUNCTION "foo"() RETURNS int(11)
return 5
drop function `foo`;
SET @@SQL_MODE='';
create table t1 (a int);
create table t2 (a int);
create view v1 as select a from t1;
show create view v1;
View Create View
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a` from `t1`
SET @@SQL_MODE='ANSI_QUOTES';
show create view v1;
View Create View
v1 CREATE ALGORITHM=UNDEFINED DEFINER="root"@"localhost" SQL SECURITY DEFINER VIEW "v1" AS select "t1"."a" AS "a" from "t1"
create view v2 as select a from t2 where a in (select a from v1);
drop view v2, v1;
drop table t1, t2;
SET @@SQL_MODE=@OLD_SQL_MODE;
|
