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` (`email`) USING BTREE
) 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" ("email") USING BTREE
) 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` (`email`) USING BTREE
)
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 @@SQL_MODE='';
create function `foo` () returns int return 5;
show create function `foo`;
Function	sql_mode	Create Function
foo		CREATE DEFINER=`root`@`localhost` FUNCTION `foo`() RETURNS int(11)
return 5
SET @@SQL_MODE='ANSI_QUOTES';
show create function `foo`;
Function	sql_mode	Create Function
foo		CREATE DEFINER=`root`@`localhost` 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 DEFINER="root"@"localhost" FUNCTION "foo"() RETURNS int(11)
return 5
SET @@SQL_MODE='';
show create function `foo`;
Function	sql_mode	Create Function
foo	ANSI_QUOTES	CREATE DEFINER="root"@"localhost" 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;
select @@sql_mode;
@@sql_mode
ANSI_QUOTES
set sql_mode=2097152;
select @@sql_mode;
@@sql_mode
STRICT_TRANS_TABLES
set sql_mode=4194304;
select @@sql_mode;
@@sql_mode
STRICT_ALL_TABLES
set sql_mode=16384+(65536*4);
select @@sql_mode;
@@sql_mode
REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,NO_TABLE_OPTIONS,ANSI
set sql_mode=2147483648;
ERROR 42000: Variable 'sql_mode' can't be set to the value of '2147483648'
select @@sql_mode;
@@sql_mode
REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,NO_TABLE_OPTIONS,ANSI
SET @@SQL_MODE=@OLD_SQL_MODE;
