drop table if exists t1,t2;
set names utf8;
select left(_utf8 0xD0B0D0B1D0B2,1);
left(_utf8 0xD0B0D0B1D0B2,1)
а
select right(_utf8 0xD0B0D0B2D0B2,1);
right(_utf8 0xD0B0D0B2D0B2,1)
в
select locate('he','hello');
locate('he','hello')
1
select locate('he','hello',2);
locate('he','hello',2)
0
select locate('lo','hello',2);
locate('lo','hello',2)
4
select locate('HE','hello');
locate('HE','hello')
1
select locate('HE','hello',2);
locate('HE','hello',2)
0
select locate('LO','hello',2);
locate('LO','hello',2)
4
select locate('HE','hello' collate utf8_bin);
locate('HE','hello' collate utf8_bin)
0
select locate('HE','hello' collate utf8_bin,2);
locate('HE','hello' collate utf8_bin,2)
0
select locate('LO','hello' collate utf8_bin,2);
locate('LO','hello' collate utf8_bin,2)
0
select locate(_utf8 0xD0B1, _utf8 0xD0B0D0B1D0B2);
locate(_utf8 0xD0B1, _utf8 0xD0B0D0B1D0B2)
2
select locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2);
locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2)
2
select locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2);
locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2)
2
select locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2 collate utf8_bin);
locate(_utf8 0xD091, _utf8 0xD0B0D0B1D0B2 collate utf8_bin)
0
select locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2 collate utf8_bin);
locate(_utf8 0xD0B1, _utf8 0xD0B0D091D0B2 collate utf8_bin)
0
select length(_utf8 0xD0B1), bit_length(_utf8 0xD0B1), char_length(_utf8 0xD0B1);
length(_utf8 0xD0B1)	bit_length(_utf8 0xD0B1)	char_length(_utf8 0xD0B1)
2	16	1
select 'a' like 'a';
'a' like 'a'
1
select 'A' like 'a';
'A' like 'a'
1
select 'A' like 'a' collate utf8_bin;
'A' like 'a' collate utf8_bin
0
select _utf8 0xD0B0D0B1D0B2 like concat(_utf8'%',_utf8 0xD0B1,_utf8 '%');
_utf8 0xD0B0D0B1D0B2 like concat(_utf8'%',_utf8 0xD0B1,_utf8 '%')
1
select convert(_latin1'Gnter Andr' using utf8) like CONVERT(_latin1'GNTER%' USING utf8);
convert(_latin1'Gnter Andr' using utf8) like CONVERT(_latin1'GNTER%' USING utf8)
1
select CONVERT(_koi8r'' USING utf8) LIKE CONVERT(_koi8r'' USING utf8);
CONVERT(_koi8r'' USING utf8) LIKE CONVERT(_koi8r'' USING utf8)
1
select CONVERT(_koi8r'' USING utf8) LIKE CONVERT(_koi8r'' USING utf8);
CONVERT(_koi8r'' USING utf8) LIKE CONVERT(_koi8r'' USING utf8)
1
SELECT 'a' = 'a ';
'a' = 'a '
1
SELECT 'a\0' < 'a';
'a\0' < 'a'
1
SELECT 'a\0' < 'a ';
'a\0' < 'a '
1
SELECT 'a\t' < 'a';
'a\t' < 'a'
1
SELECT 'a\t' < 'a ';
'a\t' < 'a '
1
SELECT 'a' = 'a ' collate utf8_bin;
'a' = 'a ' collate utf8_bin
1
SELECT 'a\0' < 'a' collate utf8_bin;
'a\0' < 'a' collate utf8_bin
1
SELECT 'a\0' < 'a ' collate utf8_bin;
'a\0' < 'a ' collate utf8_bin
1
SELECT 'a\t' < 'a' collate utf8_bin;
'a\t' < 'a' collate utf8_bin
1
SELECT 'a\t' < 'a ' collate utf8_bin;
'a\t' < 'a ' collate utf8_bin
1
CREATE TABLE t1 (a char(10) character set utf8 not null);
INSERT INTO t1 VALUES ('a'),('a\0'),('a\t'),('a ');
SELECT hex(a),STRCMP(a,'a'), STRCMP(a,'a ') FROM t1;
hex(a)	STRCMP(a,'a')	STRCMP(a,'a ')
61	0	0
6100	-1	-1
6109	-1	-1
61	0	0
DROP TABLE t1;
select insert('txs',2,1,'hi'),insert('is ',4,0,'a'),insert('txxxxt',2,4,'es');
insert('txs',2,1,'hi')	insert('is ',4,0,'a')	insert('txxxxt',2,4,'es')
this	is a	test
select insert("aa",100,1,"b"),insert("aa",1,3,"b");
insert("aa",100,1,"b")	insert("aa",1,3,"b")
aa	b
select char_length(left(@a:='тест',5)), length(@a), @a;
char_length(left(@a:='тест',5))	length(@a)	@a
4	8	тест
create table t1 select date_format("2004-01-19 10:10:10", "%Y-%m-%d");
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `date_format("2004-01-19 10:10:10", "%Y-%m-%d")` varchar(10) CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t1;
date_format("2004-01-19 10:10:10", "%Y-%m-%d")
2004-01-19
drop table t1;
set names utf8;
set LC_TIME_NAMES='fr_FR';
create table t1 (s1 char(20) character set latin1);
insert into t1 values (date_format('2004-02-02','%M'));
select hex(s1) from t1;
hex(s1)
66E97672696572
drop table t1;
create table t1 (s1 char(20) character set koi8r);
set LC_TIME_NAMES='ru_RU';
insert into t1 values (date_format('2004-02-02','%M'));
insert into t1 values (date_format('2004-02-02','%b'));
insert into t1 values (date_format('2004-02-02','%W'));
insert into t1 values (date_format('2004-02-02','%a'));
select hex(s1), s1 from t1;
hex(s1)	s1
E6C5D7D2C1CCD1	Февраля
E6C5D7	Фев
F0CFCEC5C4C5CCD8CEC9CB	Понедельник
F0CEC4	Пнд
drop table t1;
set LC_TIME_NAMES='en_US';
set names koi8r;
create table t1 (s1 char(1) character set utf8);
insert into t1 values (_koi8r'');
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
select s1,hex(s1),char_length(s1),octet_length(s1) from t1;
s1	hex(s1)	char_length(s1)	octet_length(s1)
	D0B0	1	2
drop table t1;
create table t1 (s1 tinytext character set utf8);
insert into t1 select repeat('a',300);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('',300);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('a',300);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('a',300);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('',300);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
select hex(s1) from t1;
hex(s1)
616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161616161
D18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18F
61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F
D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61
D18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18F
select length(s1),char_length(s1) from t1;
length(s1)	char_length(s1)
255	255
254	127
255	170
255	170
254	127
drop table t1;
create table t1 (s1 text character set utf8);
insert into t1 select repeat('a',66000);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('',66000);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('a',66000);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('a',66000);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
insert into t1 select repeat('',66000);
Warnings:
Warning	1265	Data truncated for column 's1' at row 1
select length(s1),char_length(s1) from t1;
length(s1)	char_length(s1)
65535	65535
65534	32767
65535	43690
65535	43690
65534	32767
drop table t1;
create table t1 (s1 char(10) character set utf8);
insert into t1 values (0x41FF);
Warnings:
Warning	1366	Incorrect string value: '\xFF' for column 's1' at row 1
select hex(s1) from t1;
hex(s1)
41
drop table t1;
create table t1 (s1 varchar(10) character set utf8);
insert into t1 values (0x41FF);
Warnings:
Warning	1366	Incorrect string value: '\xFF' for column 's1' at row 1
select hex(s1) from t1;
hex(s1)
41
drop table t1;
create table t1 (s1 text character set utf8);
insert into t1 values (0x41FF);
Warnings:
Warning	1366	Incorrect string value: '\xFF' for column 's1' at row 1
select hex(s1) from t1;
hex(s1)
41
drop table t1;
create table t1 (a text character set utf8, primary key(a(360)));
ERROR 42000: Specified key was too long; max key length is 1000 bytes
CREATE TABLE t1 ( a varchar(10) ) CHARACTER SET utf8;
INSERT INTO t1 VALUES ( 'test' );
SELECT a.a, b.a FROM t1 a, t1 b WHERE a.a = b.a;
a	a
test	test
SELECT a.a, b.a FROM t1 a, t1 b WHERE a.a = 'test' and b.a = 'test';
a	a
test	test
SELECT a.a, b.a FROM t1 a, t1 b WHERE a.a = b.a and a.a = 'test';
a	a
test	test
DROP TABLE t1;
create table t1 (a char(255) character set utf8);
insert into t1 values('b'),('b');
select * from t1 where a = 'b';
a
b
b
select * from t1 where a = 'b' and a = 'b';
a
b
b
select * from t1 where a = 'b' and a != 'b';
a
drop table t1;
set collation_connection=utf8_general_ci;
drop table if exists t1;
create table t1 as
select repeat(' ', 64) as s1, repeat(' ',64) as s2
union
select null, null;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `s1` varchar(64) CHARACTER SET utf8 DEFAULT NULL,
  `s2` varchar(64) CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
delete from t1;
insert into t1 values('aaa','aaa');
insert into t1 values('aaa|qqq','qqq');
insert into t1 values('gheis','^[^a-dXYZ]+$');
insert into t1 values('aab','^aa?b');
insert into t1 values('Baaan','^Ba*n');
insert into t1 values('aaa','qqq|aaa');
insert into t1 values('qqq','qqq|aaa');
insert into t1 values('bbb','qqq|aaa');
insert into t1 values('bbb','qqq');
insert into t1 values('aaa','aba');
insert into t1 values(null,'abc');
insert into t1 values('def',null);
insert into t1 values(null,null);
insert into t1 values('ghi','ghi[');
select HIGH_PRIORITY s1 regexp s2 from t1;
s1 regexp s2
1
1
1
1
1
1
1
0
0
0
NULL
NULL
NULL
NULL
drop table t1;
set names utf8;
set names utf8;
select  'вася'  rlike '[[:<:]]вася[[:>:]]';
'вася'  rlike '[[:<:]]вася[[:>:]]'
1
select  'вася ' rlike '[[:<:]]вася[[:>:]]';
'вася ' rlike '[[:<:]]вася[[:>:]]'
1
select ' вася'  rlike '[[:<:]]вася[[:>:]]';
' вася'  rlike '[[:<:]]вася[[:>:]]'
1
select ' вася ' rlike '[[:<:]]вася[[:>:]]';
' вася ' rlike '[[:<:]]вася[[:>:]]'
1
select  'васяz' rlike '[[:<:]]вася[[:>:]]';
'васяz' rlike '[[:<:]]вася[[:>:]]'
0
select 'zвася'  rlike '[[:<:]]вася[[:>:]]';
'zвася'  rlike '[[:<:]]вася[[:>:]]'
0
select 'zвасяz' rlike '[[:<:]]вася[[:>:]]';
'zвасяz' rlike '[[:<:]]вася[[:>:]]'
0
CREATE TABLE t1 (a enum ('Y', 'N') DEFAULT 'N' COLLATE utf8_unicode_ci);
ALTER TABLE t1 ADD COLUMN b CHAR(20);
DROP TABLE t1;
set names utf8;
create table t1 (a enum('aaaa','проба') character set utf8);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` enum('aaaa','проба') CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
insert into t1 values ('проба');
select * from t1;
a
проба
create table t2 select ifnull(a,a) from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `ifnull(a,a)` varchar(5) CHARACTER SET utf8 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t2;
ifnull(a,a)
проба
drop table t1;
drop table t2;
create table t1 (c varchar(30) character set utf8, unique(c(10)));
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaaa' for key 'c'
insert into t1 values (repeat('b',20));
select c c1 from t1 where c='1';
c1
1
select c c2 from t1 where c='2';
c2
2
select c c3 from t1 where c='3';
c3
3
select c cx from t1 where c='x';
cx
x
select c cy from t1 where c='y';
cy
y
select c cz from t1 where c='z';
cz
z
select c ca10 from t1 where c='aaaaaaaaaa';
ca10
aaaaaaaaaa
select c cb20 from t1 where c=repeat('b',20);
cb20
bbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t1 (c varchar(30) character set utf8, unique(c(10))) engine=innodb;
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaaa' for key 'c'
insert into t1 values (repeat('b',20));
select c c1 from t1 where c='1';
c1
1
select c c2 from t1 where c='2';
c2
2
select c c3 from t1 where c='3';
c3
3
select c cx from t1 where c='x';
cx
x
select c cy from t1 where c='y';
cy
y
select c cz from t1 where c='z';
cz
z
select c ca10 from t1 where c='aaaaaaaaaa';
ca10
aaaaaaaaaa
select c cb20 from t1 where c=repeat('b',20);
cb20
bbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t1 (c char(3) character set utf8, unique (c(2)));
insert into t1 values ('1'),('2'),('3'),('4'),('x'),('y'),('z');
insert into t1 values ('a');
insert into t1 values ('aa');
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bbb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'ааа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'ббб' for key 'c'
insert into t1 values ('ꪪ');
insert into t1 values ('ꪪꪪ');
insert into t1 values ('ꪪꪪꪪ');
ERROR 23000: Duplicate entry 'ꪪꪪ' for key 'c'
drop table t1;
create table t1 (c char(3) character set utf8, unique (c(2))) engine=innodb;
insert into t1 values ('1'),('2'),('3'),('4'),('x'),('y'),('z');
insert into t1 values ('a');
insert into t1 values ('aa');
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bbb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'ааа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'ббб' for key 'c'
insert into t1 values ('ꪪ');
insert into t1 values ('ꪪꪪ');
insert into t1 values ('ꪪꪪꪪ');
ERROR 23000: Duplicate entry 'ꪪꪪ' for key 'c'
drop table t1;
create table t1 (
c char(10) character set utf8,
unique key a using hash (c(1))
) engine=heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(10) CHARACTER SET utf8 DEFAULT NULL,
  UNIQUE KEY `a` (`c`(1)) USING HASH
) ENGINE=MEMORY DEFAULT CHARSET=latin1
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (
c char(10) character set utf8,
unique key a using btree (c(1))
) engine=heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(10) CHARACTER SET utf8 DEFAULT NULL,
  UNIQUE KEY `a` (`c`(1)) USING BTREE
) ENGINE=MEMORY DEFAULT CHARSET=latin1
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (
c char(10) character set utf8,
unique key a (c(1))
) engine=innodb;
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (c varchar(30) character set utf8 collate utf8_bin, unique(c(10)));
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaaaa' for key 'c'
insert into t1 values (repeat('b',20));
select c c1 from t1 where c='1';
c1
1
select c c2 from t1 where c='2';
c2
2
select c c3 from t1 where c='3';
c3
3
select c cx from t1 where c='x';
cx
x
select c cy from t1 where c='y';
cy
y
select c cz from t1 where c='z';
cz
z
select c ca10 from t1 where c='aaaaaaaaaa';
ca10
aaaaaaaaaa
select c cb20 from t1 where c=repeat('b',20);
cb20
bbbbbbbbbbbbbbbbbbbb
drop table t1;
create table t1 (c char(3) character set utf8 collate utf8_bin, unique (c(2)));
insert into t1 values ('1'),('2'),('3'),('4'),('x'),('y'),('z');
insert into t1 values ('a');
insert into t1 values ('aa');
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bbb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'ааа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'ббб' for key 'c'
insert into t1 values ('ꪪ');
insert into t1 values ('ꪪꪪ');
insert into t1 values ('ꪪꪪꪪ');
ERROR 23000: Duplicate entry 'ꪪꪪ' for key 'c'
drop table t1;
create table t1 (
c char(10) character set utf8 collate utf8_bin,
unique key a using hash (c(1))
) engine=heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(10) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  UNIQUE KEY `a` (`c`(1)) USING HASH
) ENGINE=MEMORY DEFAULT CHARSET=latin1
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (
c char(10) character set utf8 collate utf8_bin,
unique key a using btree (c(1))
) engine=heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `c` char(10) CHARACTER SET utf8 COLLATE utf8_bin DEFAULT NULL,
  UNIQUE KEY `a` (`c`(1)) USING BTREE
) ENGINE=MEMORY DEFAULT CHARSET=latin1
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (
c char(10) character set utf8 collate utf8_bin,
unique key a (c(1))
) engine=innodb;
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'aa' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'aaa' for key 'a'
insert into t1 values ('б');
insert into t1 values ('бб');
ERROR 23000: Duplicate entry 'б' for key 'a'
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'б' for key 'a'
select c as c_all from t1 order by c;
c_all
a
b
c
d
e
f
б
select c as c_a from t1 where c='a';
c_a
a
select c as c_a from t1 where c='б';
c_a
б
drop table t1;
create table t1 (
str varchar(255) character set utf8 not null,
key str  (str(2))
) engine=myisam;
INSERT INTO t1 VALUES ('str');
INSERT INTO t1 VALUES ('str2');
select * from t1 where str='str';
str
str
drop table t1;
create table t1 (
str varchar(255) character set utf8 not null,
key str  (str(2))
) engine=innodb;
INSERT INTO t1 VALUES ('str');
INSERT INTO t1 VALUES ('str2');
select * from t1 where str='str';
str
str
drop table t1;
create table t1 (
str varchar(255) character set utf8 not null,
key str using btree (str(2))
) engine=heap;
INSERT INTO t1 VALUES ('str');
INSERT INTO t1 VALUES ('str2');
select * from t1 where str='str';
str
str
drop table t1;
create table t1 (
str varchar(255) character set utf8 not null,
key str using hash (str(2))
) engine=heap;
INSERT INTO t1 VALUES ('str');
INSERT INTO t1 VALUES ('str2');
select * from t1 where str='str';
str
str
drop table t1;
create table t1 (
str varchar(255) character set utf8 not null,
key str (str(2))
) engine=innodb;
INSERT INTO t1 VALUES ('str');
INSERT INTO t1 VALUES ('str2');
select * from t1 where str='str';
str
str
drop table t1;
CREATE TABLE t1 (a varchar(32) BINARY) CHARACTER SET utf8;
INSERT INTO t1 VALUES ('test');
SELECT a FROM t1 WHERE a LIKE '%te';
a
DROP TABLE t1;
SET NAMES utf8;
CREATE TABLE t1 (
subject varchar(255) character set utf8 collate utf8_unicode_ci,
p varchar(15) character set utf8
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES ('谷川俊二と申しますが、インターネット予約の会員登録をしましたところ、メールアドレスを間違えてしまい会員ＩＤが受け取ることが出来ませんでした。間違えアドレスはtani-shun@n.vodafone.ne.jpを書き込みました。どうすればよいですか？ その他、住所等は間違えありません。連絡ください。よろしくお願いします。m(__)m','040312-000057');
INSERT INTO t1 VALUES ('aaa','bbb');
SELECT length(subject) FROM t1;
length(subject)
432
3
SELECT length(subject) FROM t1 ORDER BY 1;
length(subject)
3
432
DROP TABLE t1;
CREATE TABLE t1 (
id       int unsigned NOT NULL auto_increment,
list_id  smallint unsigned NOT NULL,
term     TEXT NOT NULL,
PRIMARY KEY(id),
INDEX(list_id, term(4))
) ENGINE=MYISAM CHARSET=utf8;
INSERT INTO t1 SET list_id = 1, term = "letterc";
INSERT INTO t1 SET list_id = 1, term = "letterb";
INSERT INTO t1 SET list_id = 1, term = "lettera";
INSERT INTO t1 SET list_id = 1, term = "letterd";
SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterc");
id
1
SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterb");
id
2
SELECT id FROM t1 WHERE (list_id = 1) AND (term = "lettera");
id
3
SELECT id FROM t1 WHERE (list_id = 1) AND (term = "letterd");
id
4
DROP TABLE t1;
SET NAMES latin1;
CREATE TABLE t1 (
id int unsigned NOT NULL auto_increment,
list_id smallint unsigned NOT NULL,
term text NOT NULL,
PRIMARY KEY(id),
INDEX(list_id, term(19))
) ENGINE=MyISAM CHARSET=utf8;
INSERT INTO t1 set list_id = 1, term = "testtest";
INSERT INTO t1 set list_id = 1, term = "testetest";
INSERT INTO t1 set list_id = 1, term = "testtest";
SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");
id	term
1	testtest
2	testetest
3	testtest
SELECT id, term FROM t1 where (list_id = 1) AND (term = "testetest");
id	term
1	testtest
2	testetest
3	testtest
SELECT id, term FROM t1 where (list_id = 1) AND (term = "testtest");
id	term
1	testtest
2	testetest
3	testtest
DROP TABLE t1;
set names utf8;
create table t1 (
a int primary key,
b varchar(6),
index b3(b(3))
) engine=innodb character set=utf8;
insert into t1 values(1,'foo'),(2,'foobar');
select * from t1 where b like 'foob%';
a	b
2	foobar
alter table t1 engine=innodb;
select * from t1 where b like 'foob%';
a	b
2	foobar
drop table t1;
create table t1 (
a enum('петя','вася','анюта') character set utf8 not null default 'анюта',
b set('петя','вася','анюта') character set utf8 not null default 'анюта'
);
create table t2 select concat(a,_utf8'') as a, concat(b,_utf8'')as b from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varchar(5) CHARACTER SET utf8 NOT NULL DEFAULT '',
  `b` varchar(15) CHARACTER SET utf8 NOT NULL DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t2;
drop table t1;
select 'c' like '\_' as want0;
want0
0
SELECT SUBSTR('вася',-2);
SUBSTR('вася',-2)
ся
create table t1 (id integer, a varchar(100) character set utf8 collate utf8_unicode_ci);
insert into t1 values (1, 'Test');
select * from t1 where soundex(a) = soundex('Test');
id	a
1	Test
select * from t1 where soundex(a) = soundex('TEST');
id	a
1	Test
select * from t1 where soundex(a) = soundex('test');
id	a
1	Test
drop table t1;
select soundex(_utf8 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB);
soundex(_utf8 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB)
阅000
select hex(soundex(_utf8 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB));
hex(soundex(_utf8 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB))
E99885303030
select soundex(_utf8 0xD091D092D093);
soundex(_utf8 0xD091D092D093)
Б000
select hex(soundex(_utf8 0xD091D092D093));
hex(soundex(_utf8 0xD091D092D093))
D091303030
SET collation_connection='utf8_general_ci';
create table t1 select repeat('a',4000) a;
delete from t1;
insert into t1 values ('a'), ('a '), ('a\t');
select collation(a),hex(a) from t1 order by a;
collation(a)	hex(a)
utf8_general_ci	6109
utf8_general_ci	61
utf8_general_ci	6120
drop table t1;
select @@collation_connection;
@@collation_connection
utf8_general_ci
create table t1 ROW_FORMAT=DYNAMIC select repeat('a',50) as c1 ;
insert into t1 values('abcdef');
insert into t1 values('_bcdef');
insert into t1 values('a_cdef');
insert into t1 values('ab_def');
insert into t1 values('abc_ef');
insert into t1 values('abcd_f');
insert into t1 values('abcde_');
select c1 as c1u from t1 where c1 like 'ab\_def';
c1u
ab_def
select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
c2h
ab_def
drop table t1;
drop table if exists t1;
create table t1 as select repeat(' ', 64) as s1;
select collation(s1) from t1;
collation(s1)
utf8_general_ci
delete from t1;
insert into t1 values ('a'),('ae'),(_latin1 0xE4);
insert into t1 values ('o'),('oe'),(_latin1 0xF6);
insert into t1 values ('s'),('ss'),(_latin1 0xDF);
insert into t1 values ('u'),('ue'),(_latin1 0xFC);
select s1, hex(s1) from t1 order by s1, binary s1;
s1	hex(s1)
a	61
ä	C3A4
ae	6165
o	6F
ö	C3B6
oe	6F65
s	73
ß	C39F
ss	7373
u	75
ü	C3BC
ue	7565
select group_concat(s1 order by binary s1) from t1 group by s1;
group_concat(s1 order by binary s1)
a,ä
ae
o,ö
oe
s,ß
ss
u,ü
ue
drop table t1;
SET collation_connection='utf8_bin';
create table t1 select repeat('a',4000) a;
delete from t1;
insert into t1 values ('a'), ('a '), ('a\t');
select collation(a),hex(a) from t1 order by a;
collation(a)	hex(a)
utf8_bin	6109
utf8_bin	61
utf8_bin	6120
drop table t1;
select @@collation_connection;
@@collation_connection
utf8_bin
create table t1 ROW_FORMAT=DYNAMIC select repeat('a',50) as c1 ;
insert into t1 values('abcdef');
insert into t1 values('_bcdef');
insert into t1 values('a_cdef');
insert into t1 values('ab_def');
insert into t1 values('abc_ef');
insert into t1 values('abcd_f');
insert into t1 values('abcde_');
select c1 as c1u from t1 where c1 like 'ab\_def';
c1u
ab_def
select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
c2h
ab_def
drop table t1;
CREATE TABLE t1 (
user varchar(255) NOT NULL default ''
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES ('one'),('two');
SELECT CHARSET('a');
CHARSET('a')
utf8
SELECT user, CONCAT('<', user, '>') AS c FROM t1;
user	c
one	<one>
two	<two>
DROP TABLE t1;
create table t1 (f1 varchar(1) not null) default charset utf8;
insert into t1 values (''), ('');
select concat(concat(_latin1'->',f1),_latin1'<-') from t1;
concat(concat(_latin1'->',f1),_latin1'<-')
-><-
-><-
drop table t1;
select convert(_koi8r'' using utf8) < convert(_koi8r'' using utf8);
convert(_koi8r'' using utf8) < convert(_koi8r'' using utf8)
1
set names latin1;
create table t1 (a varchar(10)) character set utf8;
insert into t1 values ('test');
select ifnull(a,'') from t1;
ifnull(a,'')
test
drop table t1;
select repeat(_utf8'+',3) as h union select NULL;
h
+++
NULL
select ifnull(NULL, _utf8'string');
ifnull(NULL, _utf8'string')
string
set names utf8;
create table t1 (s1 char(5) character set utf8 collate utf8_lithuanian_ci);
insert into t1 values ('I'),('K'),('Y');
select * from t1 where s1 < 'K' and s1 = 'Y';
s1
I
Y
select * from t1 where 'K' > s1 and s1 = 'Y';
s1
I
Y
drop table t1;
create table t1 (s1 char(5) character set utf8 collate utf8_czech_ci);
insert into t1 values ('c'),('d'),('h'),('ch'),('CH'),('cH'),('Ch'),('i');
select * from t1 where s1 > 'd' and s1 = 'CH';
s1
ch
CH
Ch
select * from t1 where 'd' < s1 and s1 = 'CH';
s1
ch
CH
Ch
select * from t1 where s1 = 'cH' and s1 <> 'ch';
s1
cH
select * from t1 where 'cH' = s1 and s1 <> 'ch';
s1
cH
drop table t1;
create table t1 (a varchar(255)) default character set utf8;
insert into t1 values (1.0);
drop table t1;
create table t1 (
id int not null,
city varchar(20) not null,
key (city(7),id)
) character set=utf8;
insert into t1 values (1,'Durban North');
insert into t1 values (2,'Durban');
select * from t1 where city = 'Durban';
id	city
2	Durban
select * from t1 where city = 'Durban ';
id	city
2	Durban
drop table t1;
create table t1 (x set('A', 'B') default 0) character set utf8;
ERROR 42000: Invalid default value for 'x'
create table t1 (x enum('A', 'B') default 0) character set utf8;
ERROR 42000: Invalid default value for 'x'
SET NAMES UTF8;
CREATE TABLE t1 (
`id` int(20) NOT NULL auto_increment,
`country` varchar(100) NOT NULL default '',
`shortcode` varchar(100) NOT NULL default '',
`operator` varchar(100) NOT NULL default '',
`momid` varchar(30) NOT NULL default '',
`keyword` varchar(160) NOT NULL default '',
`content` varchar(160) NOT NULL default '',
`second_token` varchar(160) default NULL,
`gateway_id` int(11) NOT NULL default '0',
`created` datetime NOT NULL default '0000-00-00 00:00:00',
`msisdn` varchar(15) NOT NULL default '',
PRIMARY KEY  (`id`),
UNIQUE KEY `MSCCSPK_20030521130957121` (`momid`),
KEY `IX_mobile_originated_message_keyword` (`keyword`),
KEY `IX_mobile_originated_message_created` (`created`),
KEY `IX_mobile_originated_message_support` (`msisdn`,`momid`,`keyword`,`gateway_id`,`created`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES 
(1,'blah','464','aaa','fkc1c9ilc20x0hgae7lx6j09','ERR','ERR Имри.Афимим.Аеимимримдмримрмрирор имримримримр имридм ирбднримрфмририримрфмфмим.Ад.Д имдимримрад.Адимримримрмдиримримримр м.Дадимфшьмримд им.Адимимрн имадми','ИМРИ.АФИМИМ.АЕИМИМРИМДМРИМРМРИРОР',3,'2005-06-01 17:30:43','1234567890'),
(2,'blah','464','aaa','haxpl2ilc20x00bj4tt2m5ti','11','11 g','G',3,'2005-06-02 22:43:10','1234567890');
CREATE TABLE t2 (
`msisdn` varchar(15) NOT NULL default '',
`operator_id` int(11) NOT NULL default '0',
`created` datetime NOT NULL default '0000-00-00 00:00:00',
UNIQUE KEY `PK_user` (`msisdn`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO t2 VALUES ('1234567890',2,'2005-05-24 13:53:25');
SELECT content, t2.msisdn FROM t1, t2 WHERE t1.msisdn = '1234567890';
content	msisdn
ERR Имри.Афимим.Аеимимримдмримрмрирор имримримримр имридм ирбднримрфмририримрфмфмим.Ад.Д имдимримрад.Адимримримрмдиримримримр м.Дадимфшьмримд им.Адимимрн имадми	1234567890
11 g	1234567890
DROP TABLE t1,t2;
create table t1 (a char(20) character set utf8);
insert into t1 values ('123456'),('андрей');
alter table t1 modify a char(2) character set utf8;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
Warning	1265	Data truncated for column 'a' at row 2
select char_length(a), length(a), a from t1 order by a;
char_length(a)	length(a)	a
2	2	12
2	4	ан
drop table t1;
set names utf8;
select 'andre%' like 'andreñ%' escape 'ñ';
'andre%' like 'andreñ%' escape 'ñ'
1
set names utf8;
select 'a\\' like 'a\\';
'a\\' like 'a\\'
1
select 'aa\\' like 'a%\\';
'aa\\' like 'a%\\'
1
create table t1 (a char(10), key(a)) character set utf8;
insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
select * from t1 where a like "abc%";
a
abc
abcd
select * from t1 where a like concat("abc","%");
a
abc
abcd
select * from t1 where a like "ABC%";
a
abc
abcd
select * from t1 where a like "test%";
a
test
select * from t1 where a like "te_t";
a
test
select * from t1 where a like "%a%";
a
a
abc
abcd
select * from t1 where a like "%abcd%";
a
abcd
select * from t1 where a like "%abc\d%";
a
abcd
drop table t1;
CREATE TABLE t1 (
a varchar(255) NOT NULL default '',
KEY a (a)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE utf8_general_ci;
insert into t1 values (_utf8 0xe880bd);
insert into t1 values (_utf8 0x5b);
select hex(a) from t1;
hex(a)
5B
E880BD
drop table t1;
set names 'latin1';
create table t1 (a varchar(255)) default charset=utf8;
select * from t1 where find_in_set('-1', a);
a
drop table t1;
create table t1 (a int);
insert into t1 values (48),(49),(50);
set names utf8;
select distinct char(a) from t1;
char(a)
0
1
2
drop table t1;
CREATE TABLE t1 (t TINYTEXT CHARACTER SET utf8);
INSERT INTO t1 VALUES(REPEAT('a', 100));
CREATE TEMPORARY TABLE t2 SELECT COALESCE(t) AS bug FROM t1;
SELECT LENGTH(bug) FROM t2;
LENGTH(bug)
100
DROP TABLE t2;
DROP TABLE t1;
CREATE TABLE t1 (item varchar(255)) default character set utf8;
INSERT INTO t1 VALUES (N'\\');
INSERT INTO t1 VALUES (_utf8'\\');
INSERT INTO t1 VALUES (N'Cote d\'Ivoire');
INSERT INTO t1 VALUES (_utf8'Cote d\'Ivoire');
SELECT item FROM t1 ORDER BY item;
item
Cote d'Ivoire
Cote d'Ivoire
\
\
DROP TABLE t1;
SET NAMES utf8;
DROP TABLE IF EXISTS t1;
Warnings:
Note	1051	Unknown table 't1'
CREATE TABLE t1(a VARCHAR(255), KEY(a)) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
INSERT INTO t1 VALUES('uu');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('uU');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('uu');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('uuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('UuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('uuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
alter table t1 add b int;
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',1);
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',2);
delete from t1 where b=1;
INSERT INTO t1 VALUES('UUABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',1);
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',3);
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',4);
delete from t1 where b=3;
INSERT INTO t1 VALUES('uUABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',3);
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
drop table t1;
set names utf8;
create table t1 (s1 char(5) character set utf8);
insert into t1 values
('a'),('b'),(null),('ペテルグル'),('ü'),('Y');
create index it1 on t1 (s1);
select s1 as before_delete_general_ci from t1 where s1 like 'ペテ%';
before_delete_general_ci
ペテルグル
delete from t1 where s1 = 'Y';
select s1 as after_delete_general_ci from t1 where s1 like 'ペテ%';
after_delete_general_ci
ペテルグル
drop table t1;
set names utf8;
create table t1 (s1 char(5) character set utf8 collate utf8_unicode_ci);
insert into t1 values
('a'),('b'),(null),('ペテルグル'),('ü'),('Y');
create index it1 on t1 (s1);
select s1 as before_delete_unicode_ci from t1 where s1 like 'ペテ%';
before_delete_unicode_ci
ペテルグル
delete from t1 where s1 = 'Y';
select s1 as after_delete_unicode_ci from t1 where s1 like 'ペテ%';
after_delete_unicode_ci
ペテルグル
drop table t1;
set names utf8;
create table t1 (s1 char(5) character set utf8 collate utf8_bin);
insert into t1 values
('a'),('b'),(null),('ペテルグル'),('ü'),('Y');
create index it1 on t1 (s1);
select s1 as before_delete_bin from t1 where s1 like 'ペテ%';
before_delete_bin
ペテルグル
delete from t1 where s1 = 'Y';
select s1 as after_delete_bin from t1 where s1 like 'ペテ%';
after_delete_bin
ペテルグル
drop table t1;
set names utf8;
create table t1 (a varchar(30) not null primary key)
engine=innodb  default character set utf8 collate utf8_general_ci;
insert into t1 values ('あいうえおかきくけこさしすせそ');
insert into t1 values ('さしすせそかきくけこあいうえお');
select a as gci1 from t1 where a like 'さしすせそかきくけこあいうえお%';
gci1
さしすせそかきくけこあいうえお
select a as gci2 from t1 where a like 'あいうえおかきくけこさしすせそ';
gci2
あいうえおかきくけこさしすせそ
drop table t1;
set names utf8;
create table t1 (a varchar(30) not null primary key)
engine=innodb default character set utf8 collate utf8_unicode_ci;
insert into t1 values ('あいうえおかきくけこさしすせそ');
insert into t1 values ('さしすせそかきくけこあいうえお');
select a as uci1 from t1 where a like 'さしすせそかきくけこあいうえお%';
uci1
さしすせそかきくけこあいうえお
select a as uci2 from t1 where a like 'あいうえおかきくけこさしすせそ';
uci2
あいうえおかきくけこさしすせそ
drop table t1;
set names utf8;
create table t1 (a varchar(30) not null primary key)
engine=innodb default character set utf8 collate utf8_bin;
insert into t1 values ('あいうえおかきくけこさしすせそ');
insert into t1 values ('さしすせそかきくけこあいうえお');
select a as bin1 from t1 where a like 'さしすせそかきくけこあいうえお%';
bin1
さしすせそかきくけこあいうえお
select a as bin2 from t1 where a like 'あいうえおかきくけこさしすせそ';
bin2
あいうえおかきくけこさしすせそ
drop table t1;
SET NAMES utf8;
CREATE TABLE t1 (id int PRIMARY KEY,
a varchar(16) collate utf8_unicode_ci NOT NULL default '',
b int,
f varchar(128) default 'XXX',
INDEX (a(4))
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
INSERT INTO t1(id, a, b) VALUES
(1, 'cccc', 50), (2, 'cccc', 70), (3, 'cccc', 30),
(4, 'cccc', 30), (5, 'cccc', 20), (6, 'bbbbbb', 40),
(7, 'dddd', 30), (8, 'aaaa', 10), (9, 'aaaa', 50),
(10, 'eeeee', 40), (11, 'bbbbbb', 60);
SELECT id, a, b FROM t1;
id	a	b
1	cccc	50
2	cccc	70
3	cccc	30
4	cccc	30
5	cccc	20
6	bbbbbb	40
7	dddd	30
8	aaaa	10
9	aaaa	50
10	eeeee	40
11	bbbbbb	60
SELECT id, a, b FROM t1 WHERE a BETWEEN 'aaaa' AND 'bbbbbb';
id	a	b
8	aaaa	10
9	aaaa	50
6	bbbbbb	40
11	bbbbbb	60
SELECT id, a FROM t1 WHERE a='bbbbbb';
id	a
6	bbbbbb
11	bbbbbb
SELECT id, a FROM t1 WHERE a='bbbbbb' ORDER BY b;
id	a
6	bbbbbb
11	bbbbbb
DROP TABLE t1;
SET NAMES utf8;
CREATE TABLE t1 (
a CHAR(13) DEFAULT '',
INDEX(a)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
INSERT INTO t1 VALUES 
('Käli Käli 2-4'), ('Käli Käli 2-4'),
('Käli Käli 2+4'), ('Käli Käli 2+4'),
('Käli Käli 2-6'), ('Käli Käli 2-6');
INSERT INTO t1 SELECT * FROM t1;
CREATE TABLE t2 (
a CHAR(13) DEFAULT '',
INDEX(a)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;
INSERT INTO t2 VALUES
('Kali Kali 2-4'), ('Kali Kali 2-4'),
('Kali Kali 2+4'), ('Kali Kali 2+4'),
('Kali Kali 2-6'), ('Kali Kali 2-6');
INSERT INTO t2 SELECT * FROM t2;
SELECT a FROM t1 WHERE a LIKE 'Käli Käli 2+4';
a
Käli Käli 2+4
Käli Käli 2+4
Käli Käli 2+4
Käli Käli 2+4
SELECT a FROM t2 WHERE a LIKE 'Kali Kali 2+4';
a
Kali Kali 2+4
Kali Kali 2+4
Kali Kali 2+4
Kali Kali 2+4
EXPLAIN SELECT a FROM t1 WHERE a LIKE 'Käli Käli 2+4';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	40	NULL	4	Using where; Using index
EXPLAIN SELECT a FROM t1 WHERE a = 'Käli Käli 2+4';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	40	const	4	Using where; Using index
EXPLAIN SELECT a FROM t2 WHERE a LIKE 'Kali Kali 2+4';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	range	a	a	14	NULL	4	Using where; Using index
EXPLAIN SELECT a FROM t2 WHERE a = 'Kali Kali 2+4';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	a	a	14	const	4	Using where; Using index
DROP TABLE t1,t2;
CREATE TABLE t1 (
a char(255) DEFAULT '', 
KEY(a(10))
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
INSERT INTO t1 VALUES ('Käli Käli 2-4');
SELECT * FROM t1 WHERE a LIKE 'Käli Käli 2%';
a
Käli Käli 2-4
INSERT INTO t1 VALUES ('Käli Käli 2-4');
SELECT * FROM t1 WHERE a LIKE 'Käli Käli 2%';
a
Käli Käli 2-4
Käli Käli 2-4
DROP TABLE t1;
CREATE TABLE t1 (
a char(255) DEFAULT ''
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
INSERT INTO t1 VALUES ('Käli Käli 2-4');
INSERT INTO t1 VALUES ('Käli Käli 2-4');
SELECT * FROM t1 WHERE a LIKE 'Käli Käli 2%';
a
Käli Käli 2-4
Käli Käli 2-4
ALTER TABLE t1 ADD KEY (a(10));
SELECT * FROM t1 WHERE a LIKE 'Käli Käli 2%';
a
Käli Käli 2-4
Käli Käli 2-4
DROP TABLE t1;
SET NAMES latin2;
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
tid int(11) NOT NULL default '0',
val text NOT NULL,
INDEX idx(tid, val(10))
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES
(40988,72,'VOLN ADSL'),(41009,72,'VOLN ADSL'),
(41032,72,'VOLN ADSL'),(41038,72,'VOLN ADSL'),
(41063,72,'VOLN ADSL'),(41537,72,'VOLN ADSL Office'),
(42141,72,'VOLN ADSL'),(42565,72,'VOLN ADSL Combi'),
(42749,72,'VOLN ADSL'),(44205,72,'VOLN ADSL');
SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLNY ADSL';
id	tid	val
40988	72	VOLN ADSL
41009	72	VOLN ADSL
41032	72	VOLN ADSL
41038	72	VOLN ADSL
41063	72	VOLN ADSL
42141	72	VOLN ADSL
42749	72	VOLN ADSL
44205	72	VOLN ADSL
SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLN ADSL';
id	tid	val
40988	72	VOLN ADSL
41009	72	VOLN ADSL
41032	72	VOLN ADSL
41038	72	VOLN ADSL
41063	72	VOLN ADSL
42141	72	VOLN ADSL
42749	72	VOLN ADSL
44205	72	VOLN ADSL
SELECT * FROM t1 WHERE tid=72 and val LIKE '%VOLN ADSL';
id	tid	val
40988	72	VOLN ADSL
41009	72	VOLN ADSL
41032	72	VOLN ADSL
41038	72	VOLN ADSL
41063	72	VOLN ADSL
42141	72	VOLN ADSL
42749	72	VOLN ADSL
44205	72	VOLN ADSL
ALTER TABLE t1 DROP KEY idx;
ALTER TABLE t1 ADD KEY idx (tid,val(11));
SELECT * FROM t1 WHERE tid=72 and val LIKE 'VOLN ADSL';
id	tid	val
40988	72	VOLN ADSL
41009	72	VOLN ADSL
41032	72	VOLN ADSL
41038	72	VOLN ADSL
41063	72	VOLN ADSL
42141	72	VOLN ADSL
42749	72	VOLN ADSL
44205	72	VOLN ADSL
DROP TABLE t1;
create table t1(a char(200) collate utf8_unicode_ci NOT NULL default '')
default charset=utf8 collate=utf8_unicode_ci;
insert into t1 values (unhex('65')), (unhex('C3A9')), (unhex('65'));
explain select distinct a from t1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	Using temporary
select distinct a from t1;
a
e
explain select a from t1 group by a;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	Using temporary; Using filesort
select a from t1 group by a;
a
e
drop table t1;
create table t1(a char(10)) default charset utf8;
insert into t1 values ('123'), ('456');
explain
select substr(Z.a,-1), Z.a from t1 as Y join t1 as Z on Y.a=Z.a order by 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	Y	ALL	NULL	NULL	NULL	NULL	2	Using temporary; Using filesort
1	SIMPLE	Z	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer
select substr(Z.a,-1), Z.a from t1 as Y join t1 as Z on Y.a=Z.a order by 1;
substr(Z.a,-1)	a
3	123
6	456
drop table t1;
CREATE TABLE t1(id varchar(20) NOT NULL) DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES ('xxx'), ('aa'), ('yyy'), ('aa');
SELECT id FROM t1;
id
xxx
aa
yyy
aa
SELECT DISTINCT id FROM t1;
id
xxx
aa
yyy
SELECT DISTINCT id FROM t1 ORDER BY id;
id
aa
xxx
yyy
DROP TABLE t1;
create table t1 (
a varchar(26) not null
) default character set utf8;
insert into t1 (a) values ('abcdefghijklmnopqrstuvwxyz');
select * from t1;
a
abcdefghijklmnopqrstuvwxyz
alter table t1 change a a varchar(20) character set utf8 not null;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
select * from t1;
a
abcdefghijklmnopqrst
alter table t1 change a a char(15) character set utf8 not null;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
select * from t1;
a
abcdefghijklmno
alter table t1 change a a char(10) character set utf8 not null;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
select * from t1;
a
abcdefghij
alter table t1 change a a varchar(5) character set utf8 not null;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
select * from t1;
a
abcde
drop table t1;
create table t1 (
a varchar(4000) not null
) default character set utf8;
insert into t1 values (repeat('a',4000));
alter table t1 change a a varchar(3000) character set utf8 not null;
Warnings:
Warning	1265	Data truncated for column 'a' at row 1
select length(a) from t1;
length(a)
3000
drop table t1;
set names utf8;
select hex(char(1 using utf8));
hex(char(1 using utf8))
01
select char(0xd1,0x8f using utf8);
char(0xd1,0x8f using utf8)
я
select char(0xd18f using utf8);
char(0xd18f using utf8)
я
select char(53647 using utf8);
char(53647 using utf8)
я
select char(0xff,0x8f using utf8);
char(0xff,0x8f using utf8)

Warnings:
Warning	1300	Invalid utf8 character string: 'FF8F'
select convert(char(0xff,0x8f) using utf8);
convert(char(0xff,0x8f) using utf8)

Warnings:
Warning	1300	Invalid utf8 character string: 'FF8F'
set sql_mode=traditional;
select char(0xff,0x8f using utf8);
char(0xff,0x8f using utf8)
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'FF8F'
select char(195 using utf8);
char(195 using utf8)
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'C3'
select char(196 using utf8);
char(196 using utf8)
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'C4'
select char(2557 using utf8);
char(2557 using utf8)
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'FD'
select convert(char(0xff,0x8f) using utf8);
convert(char(0xff,0x8f) using utf8)
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'FF8F'
select hex(convert(char(2557 using latin1) using utf8));
hex(convert(char(2557 using latin1) using utf8))
09C3BD
select hex(char(195));
hex(char(195))
C3
select hex(char(196));
hex(char(196))
C4
select hex(char(2557));
hex(char(2557))
09FD
set names utf8;
create table t1 (a char(1)) default character set utf8;
create table t2 (a char(1)) default character set utf8;
insert into t1 values('a'),('a'),(0xE38182),(0xE38182);
insert into t1 values('i'),('i'),(0xE38184),(0xE38184);
select * from t1 union distinct select * from t2;
a
a
あ
i
い
drop table t1,t2;
set names utf8;
create table t1 (a char(10), b varchar(10));
insert into t1 values ('bar','kostja');
insert into t1 values ('kostja','bar');
prepare my_stmt from "select * from t1 where a=?";
set @a:='bar';
execute my_stmt using @a;
a	b
bar	kostja
set @a:='kostja';
execute my_stmt using @a;
a	b
kostja	bar
set @a:=null;
execute my_stmt using @a;
a	b
drop table if exists t1;
drop table if exists t1;
drop view if exists v1, v2;
set names utf8;
create table t1(col1 varchar(12) character set utf8 collate utf8_unicode_ci);
insert into t1 values('t1_val');
create view v1 as select 'v1_val' as col1;
select coercibility(col1), collation(col1) from v1;
coercibility(col1)	collation(col1)
4	utf8_general_ci
create view v2 as select col1 from v1 union select col1 from t1;
select coercibility(col1), collation(col1)from v2;
coercibility(col1)	collation(col1)
2	utf8_unicode_ci
2	utf8_unicode_ci
drop view v1, v2;
create view v1 as select 'v1_val' collate utf8_swedish_ci as col1;
select coercibility(col1), collation(col1) from v1;
coercibility(col1)	collation(col1)
0	utf8_swedish_ci
create view v2 as select col1 from v1 union select col1 from t1;
select coercibility(col1), collation(col1) from v2;
coercibility(col1)	collation(col1)
0	utf8_swedish_ci
0	utf8_swedish_ci
drop view v1, v2;
drop table t1;
set names utf8;
create table t1 (a varchar(10) character set latin1, b int);
insert into t1 values ('a',1);
select concat(a, if(b>10, N'x', N'y')) from t1;
concat(a, if(b>10, N'x', N'y'))
ay
select concat(a, if(b>10, N'æ', N'ß')) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
set names utf8;
create table t1 (a varchar(10) character set latin1, b int);
insert into t1 values ('a',1);
select concat(a, if(b>10, _utf8'x', _utf8'y')) from t1;
concat(a, if(b>10, _utf8'x', _utf8'y'))
ay
select concat(a, if(b>10, _utf8'æ', _utf8'ß')) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
set names utf8;
create table t1 (a varchar(10) character set latin1, b int);
insert into t1 values ('a',1);
select concat(a, if(b>10, _utf8 0x78, _utf8 0x79)) from t1;
concat(a, if(b>10, _utf8 0x78, _utf8 0x79))
ay
select concat(a, if(b>10, _utf8 0xC3A6, _utf8 0xC3AF)) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
set names utf8;
create table t1 (a varchar(10) character set latin1, b int);
insert into t1 values ('a',1);
select concat(a, if(b>10, 'x' 'x', 'y' 'y')) from t1;
concat(a, if(b>10, 'x' 'x', 'y' 'y'))
ayy
select concat(a, if(b>10, 'x' 'æ', 'y' 'ß')) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
CREATE TABLE t1 (
colA int(11) NOT NULL,
colB varchar(255) character set utf8 NOT NULL,
PRIMARY KEY  (colA)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 (colA, colB) VALUES (1, 'foo'), (2, 'foo bar');
CREATE TABLE t2 (
colA int(11) NOT NULL,
colB varchar(255) character set utf8 NOT NULL,
KEY bad  (colA,colB(3))
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t2 (colA, colB) VALUES (1, 'foo'),(2, 'foo bar');
SELECT * FROM t1 JOIN t2 ON t1.colA=t2.colA AND t1.colB=t2.colB
WHERE t1.colA < 3;
colA	colB	colA	colB
1	foo	1	foo
2	foo bar	2	foo bar
DROP TABLE t1, t2;
SELECT 'н1234567890' UNION SELECT _binary '1';
н1234567890
н1234567890
1
SELECT 'н1234567890' UNION SELECT 1;
н1234567890
н1234567890
1
SELECT '1' UNION SELECT 'н1234567890';
1
1
н1234567890
SELECT 1 UNION SELECT 'н1234567890';
1
1
н1234567890
CREATE TABLE t1 (c VARCHAR(11)) CHARACTER SET utf8;
CREATE TABLE t2 (b CHAR(1) CHARACTER SET binary, i INT);
INSERT INTO t1 (c) VALUES ('н1234567890');
INSERT INTO t2 (b, i) VALUES ('1', 1);
SELECT c FROM t1 UNION SELECT b FROM t2;
c
н1234567890
1
SELECT c FROM t1 UNION SELECT i FROM t2;
c
н1234567890
1
SELECT b FROM t2 UNION SELECT c FROM t1;
b
1
н1234567890
SELECT i FROM t2 UNION SELECT c FROM t1;
i
1
н1234567890
DROP TABLE t1, t2;
set sql_mode=traditional;
select hex(char(0xFF using utf8));
hex(char(0xFF using utf8))
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'FF'
select hex(convert(0xFF using utf8));
hex(convert(0xFF using utf8))
NULL
Warnings:
Error	1300	Invalid utf8 character string: 'FF'
select hex(_utf8 0x616263FF);
ERROR HY000: Invalid utf8 character string: 'FF'
select hex(_utf8 X'616263FF');
ERROR HY000: Invalid utf8 character string: 'FF'
select hex(_utf8 B'001111111111');
ERROR HY000: Invalid utf8 character string: 'FF'
select (_utf8 X'616263FF');
ERROR HY000: Invalid utf8 character string: 'FF'
set sql_mode=default;
select hex(char(0xFF using utf8));
hex(char(0xFF using utf8))

Warnings:
Warning	1300	Invalid utf8 character string: 'FF'
select hex(convert(0xFF using utf8));
hex(convert(0xFF using utf8))

Warnings:
Warning	1300	Invalid utf8 character string: 'FF'
select hex(_utf8 0x616263FF);
ERROR HY000: Invalid utf8 character string: 'FF'
select hex(_utf8 X'616263FF');
ERROR HY000: Invalid utf8 character string: 'FF'
select hex(_utf8 B'001111111111');
ERROR HY000: Invalid utf8 character string: 'FF'
select (_utf8 X'616263FF');
ERROR HY000: Invalid utf8 character string: 'FF'
#
# Bug#44131 Binary-mode "order by" returns records in incorrect order for UTF-8 strings
#
CREATE TABLE t1 (id int not null primary key, name varchar(10)) character set utf8;
INSERT INTO t1 VALUES
(2,'一二三01'),(3,'一二三09'),(4,'一二三02'),(5,'一二三08'),
(6,'一二三11'),(7,'一二三91'),(8,'一二三21'),(9,'一二三81');
SELECT * FROM t1 ORDER BY BINARY(name);
id	name
2	一二三01
4	一二三02
5	一二三08
3	一二三09
6	一二三11
8	一二三21
9	一二三81
7	一二三91
DROP TABLE t1;
CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL);
INSERT INTO t1 VALUES (70000, 1092), (70001, 1085), (70002, 1065);
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) FROM t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70002	1065
70001	1085
70000	1092
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) FROM t1;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70000	1092
70001	1085
70002	1065
ALTER TABLE t1 ADD UNIQUE (b);
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) FROM t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70002	1065
70001	1085
70000	1092
DROP INDEX b ON t1;
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) FROM t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70002	1065
70001	1085
70000	1092
ALTER TABLE t1 ADD INDEX (b);
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) from t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70002	1065
70001	1085
70000	1092
DROP TABLE t1;
End of 5.0 tests
SELECT LENGTH(RPAD(0.0115E88, 61297, _utf8'яэюя'));
LENGTH(RPAD(0.0115E88, 61297, _utf8'яэюя'))
61297
SELECT LENGTH(RPAD(0.0115E88, 61297, _utf8'йцуя'));
LENGTH(RPAD(0.0115E88, 61297, _utf8'йцуя'))
61297
SELECT HEX(RPAD(0x20, 2, _utf8 0xD18F));
HEX(RPAD(0x20, 2, _utf8 0xD18F))
20D1
SELECT HEX(RPAD(0x20, 4, _utf8 0xD18F));
HEX(RPAD(0x20, 4, _utf8 0xD18F))
20D18FD1
SELECT HEX(LPAD(0x20, 2, _utf8 0xD18F));
HEX(LPAD(0x20, 2, _utf8 0xD18F))
D120
SELECT HEX(LPAD(0x20, 4, _utf8 0xD18F));
HEX(LPAD(0x20, 4, _utf8 0xD18F))
D18FD120
SELECT HEX(RPAD(_utf8 0xD18F, 3, 0x20));
HEX(RPAD(_utf8 0xD18F, 3, 0x20))
D18F20
SELECT HEX(LPAD(_utf8 0xD18F, 3, 0x20));
HEX(LPAD(_utf8 0xD18F, 3, 0x20))
20D18F
SELECT HEX(INSERT(_utf8 0xD18F, 2, 1, 0x20));
HEX(INSERT(_utf8 0xD18F, 2, 1, 0x20))
D120
SELECT HEX(INSERT(_utf8 0xD18FD18E, 2, 1, 0x20));
HEX(INSERT(_utf8 0xD18FD18E, 2, 1, 0x20))
D120D18E
#
# Bug#11752408 - 43593: DUMP/BACKUP/RESTORE/UPGRADE TOOLS FAILS BECAUSE OF UTF8_GENERAL_CI
#
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8 COLLATE utf8_general_mysql500_ci);
INSERT INTO t1 VALUES ('a'),('r'),('s'),(_latin1 0xDF),(_latin1 0xF7),('t'),('z');
SELECT * FROM t1 ORDER BY a;
a
a
r
s
t
z
ß
÷
SELECT a, COUNT(*) FROM t1 GROUP BY a;
a	COUNT(*)
a	1
r	1
s	1
t	1
z	1
ß	1
÷	1
DROP TABLE t1;
End of 5.1 tests