drop table if exists t1,t2;
#
# Start of 5.5 tests
#
set names utf8mb4;
select left(_utf8mb4 0xD0B0D0B1D0B2,1);
left(_utf8mb4 0xD0B0D0B1D0B2,1)
а
select right(_utf8mb4 0xD0B0D0B2D0B2,1);
right(_utf8mb4 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 utf8mb4_bin);
locate('HE','hello' collate utf8mb4_bin)
0
select locate('HE','hello' collate utf8mb4_bin,2);
locate('HE','hello' collate utf8mb4_bin,2)
0
select locate('LO','hello' collate utf8mb4_bin,2);
locate('LO','hello' collate utf8mb4_bin,2)
0
select locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D0B1D0B2);
locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D0B1D0B2)
2
select locate(_utf8mb4 0xD091, _utf8mb4 0xD0B0D0B1D0B2);
locate(_utf8mb4 0xD091, _utf8mb4 0xD0B0D0B1D0B2)
2
select locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D091D0B2);
locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D091D0B2)
2
select locate(_utf8mb4 0xD091, _utf8mb4 0xD0B0D0B1D0B2 collate utf8mb4_bin);
locate(_utf8mb4 0xD091, _utf8mb4 0xD0B0D0B1D0B2 collate utf8mb4_bin)
0
select locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D091D0B2 collate utf8mb4_bin);
locate(_utf8mb4 0xD0B1, _utf8mb4 0xD0B0D091D0B2 collate utf8mb4_bin)
0
select length(_utf8mb4 0xD0B1), bit_length(_utf8mb4 0xD0B1), char_length(_utf8mb4 0xD0B1);
length(_utf8mb4 0xD0B1)	bit_length(_utf8mb4 0xD0B1)	char_length(_utf8mb4 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 utf8mb4_bin;
'A' like 'a' collate utf8mb4_bin
0
select _utf8mb4 0xD0B0D0B1D0B2 like concat(_utf8mb4'%',_utf8mb4 0xD0B1,_utf8mb4 '%');
_utf8mb4 0xD0B0D0B1D0B2 like concat(_utf8mb4'%',_utf8mb4 0xD0B1,_utf8mb4 '%')
1
select convert(_latin1'G�nter Andr�' using utf8mb4) like CONVERT(_latin1'G�NTER%' USING utf8mb4);
convert(_latin1'G?nter Andr?' using utf8mb4) like CONVERT(_latin1'G?NTER%' USING utf8mb4)
1
select CONVERT(_koi8r'����' USING utf8mb4) LIKE CONVERT(_koi8r'����' USING utf8mb4);
CONVERT(_koi8r'????' USING utf8mb4) LIKE CONVERT(_koi8r'????' USING utf8mb4)
1
select CONVERT(_koi8r'����' USING utf8mb4) LIKE CONVERT(_koi8r'����' USING utf8mb4);
CONVERT(_koi8r'????' USING utf8mb4) LIKE CONVERT(_koi8r'????' USING utf8mb4)
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 utf8mb4_bin;
'a' = 'a ' collate utf8mb4_bin
1
SELECT 'a\0' < 'a' collate utf8mb4_bin;
'a\0' < 'a' collate utf8mb4_bin
1
SELECT 'a\0' < 'a ' collate utf8mb4_bin;
'a\0' < 'a ' collate utf8mb4_bin
1
SELECT 'a\t' < 'a' collate utf8mb4_bin;
'a\t' < 'a' collate utf8mb4_bin
1
SELECT 'a\t' < 'a ' collate utf8mb4_bin;
'a\t' < 'a ' collate utf8mb4_bin
1
CREATE TABLE t1 (a char(10) character set utf8mb4 not null) ENGINE heap;
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
61	0	0
6100	-1	-1
6109	-1	-1
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 ENGINE heap 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 utf8mb4 DEFAULT NULL
) ENGINE=MEMORY 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 utf8mb4;
set LC_TIME_NAMES='fr_FR';
create table t1 (s1 char(20) character set latin1) engine heap;
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) engine heap;
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
E6C5D7	Фев
E6C5D7D2C1CCD1	Февраля
F0CEC4	Пнд
F0CFCEC5C4C5CCD8CEC9CB	Понедельник
drop table t1;
set LC_TIME_NAMES='en_US';
set names koi8r;
create table t1 (s1 char(1) character set utf8mb4) engine heap;
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 varchar(255) character set utf8mb4) engine heap;
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
61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61
D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F61D18F
D18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18F
D18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18FD18F
select length(s1),char_length(s1) from t1;
length(s1)	char_length(s1)
255	255
382	255
383	255
510	255
510	255
drop table t1;
create table t1 (s1 varchar(255) character set utf8mb4) engine heap;
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)
255	255
382	255
383	255
510	255
510	255
drop table t1;
create table t1 (s1 char(10) character set utf8mb4) engine heap;
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 utf8mb4) engine heap;
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 varchar(10) ) CHARACTER SET utf8mb4 ENGINE heap;
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 utf8mb4) engine heap;
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=utf8mb4_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 utf8mb4 DEFAULT NULL,
  `s2` varchar(64) CHARACTER SET utf8mb4 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
0
0
0
1
1
1
1
1
1
1
NULL
NULL
NULL
NULL
drop table t1;
set names utf8mb4;
set names utf8mb4;
select  'вася'  rlike '\\bвася\\b';
'вася'  rlike '\\bвася\\b'
1
select  'вася ' rlike '\\bвася\\b';
'вася ' rlike '\\bвася\\b'
1
select ' вася'  rlike '\\bвася\\b';
' вася'  rlike '\\bвася\\b'
1
select ' вася ' rlike '\\bвася\\b';
' вася ' rlike '\\bвася\\b'
1
select  'васяz' rlike '\\bвася\\b';
'васяz' rlike '\\bвася\\b'
0
select 'zвася'  rlike '\\bвася\\b';
'zвася'  rlike '\\bвася\\b'
0
select 'zвасяz' rlike '\\bвася\\b';
'zвасяz' rlike '\\bвася\\b'
0
CREATE TABLE t1 (a enum ('Y', 'N') DEFAULT 'N' COLLATE utf8mb4_unicode_ci) ENGINE heap;
ALTER TABLE t1 ADD COLUMN b CHAR(20);
DROP TABLE t1;
set names utf8mb4;
create table t1 (a enum('aaaa','проба') character set utf8mb4) engine heap;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` enum('aaaa','проба') CHARACTER SET utf8mb4 DEFAULT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
insert into t1 values ('проба');
select * from t1;
a
проба
create table t2 engine heap select ifnull(a,a) from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `ifnull(a,a)` varchar(5) CHARACTER SET utf8mb4 DEFAULT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
select * from t2;
ifnull(a,a)
проба
drop table t1;
drop table t2;
create table t1 (c varchar(30) character set utf8mb4, unique(c(10))) engine heap;
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' 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 utf8mb4, unique(c(10))) engine=heap;
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' 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 utf8mb4, unique (c(2))) engine heap;
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 'aa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'аа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'бб' 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 utf8mb4, unique (c(2))) engine=heap;
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 'aa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'аа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'бб' 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 utf8mb4,
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 utf8mb4 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 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4,
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 utf8mb4 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 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4,
unique key a (c(1))
) engine=heap;
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4 collate utf8mb4_bin, unique(c(10))) engine heap;
insert into t1 values ('1'),('2'),('3'),('x'),('y'),('z');
insert into t1 values ('aaaaaaaaaa');
insert into t1 values ('aaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' for key 'c'
insert into t1 values ('aaaaaaaaaaaa');
ERROR 23000: Duplicate entry 'aaaaaaaaaa' 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 utf8mb4 collate utf8mb4_bin, unique (c(2))) engine heap;
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 'aa' for key 'c'
insert into t1 values ('b');
insert into t1 values ('bb');
insert into t1 values ('bbb');
ERROR 23000: Duplicate entry 'bb' for key 'c'
insert into t1 values ('а');
insert into t1 values ('аа');
insert into t1 values ('ааа');
ERROR 23000: Duplicate entry 'аа' for key 'c'
insert into t1 values ('б');
insert into t1 values ('бб');
insert into t1 values ('ббб');
ERROR 23000: Duplicate entry 'бб' 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 utf8mb4 collate utf8mb4_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 utf8mb4 COLLATE utf8mb4_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 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4 collate utf8mb4_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 utf8mb4 COLLATE utf8mb4_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 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4 collate utf8mb4_bin,
unique key a (c(1))
) engine=heap;
insert into t1 values ('a'),('b'),('c'),('d'),('e'),('f');
insert into t1 values ('aa');
ERROR 23000: Duplicate entry 'a' for key 'a'
insert into t1 values ('aaa');
ERROR 23000: Duplicate entry 'a' 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 utf8mb4 not null,
key str  (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 utf8mb4 not null,
key str  (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 utf8mb4 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 utf8mb4 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 utf8mb4 not null,
key str (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 (a varchar(32) BINARY) CHARACTER SET utf8mb4 ENGINE heap;
INSERT INTO t1 VALUES ('test');
SELECT a FROM t1 WHERE a LIKE '%te';
a
DROP TABLE t1;
SET NAMES utf8mb4;
CREATE TABLE t1 (
subject varchar(255) character set utf8mb4 collate utf8mb4_unicode_ci,
p varchar(15) character set utf8mb4
) ENGINE= heap 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)
3
432
SELECT length(subject) FROM t1 ORDER BY 1;
length(subject)
3
432
DROP TABLE t1;
set names utf8mb4;
create table t1 (
a int primary key,
b varchar(6),
index b3(b(3))
) engine=heap character set=utf8mb4;
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 utf8mb4 not null default 'анюта',
b set('петя','вася','анюта') character set utf8mb4 not null default 'анюта'
) engine heap;
create table t2 engine heap select concat(a,_utf8mb4'') as a, concat(b,_utf8mb4'')as b from t1;
show create table t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `a` varchar(5) CHARACTER SET utf8mb4 NOT NULL DEFAULT '',
  `b` varchar(15) CHARACTER SET utf8mb4 NOT NULL DEFAULT ''
) ENGINE=MEMORY 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 utf8mb4 collate utf8mb4_unicode_ci) engine heap;
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(_utf8mb4 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB);
soundex(_utf8mb4 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB)
阅000
select hex(soundex(_utf8mb4 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB));
hex(soundex(_utf8mb4 0xE99885E8A788E99A8FE697B6E69BB4E696B0E79A84E696B0E997BB))
E99885303030
select soundex(_utf8mb4 0xD091D092D093);
soundex(_utf8mb4 0xD091D092D093)
Б000
select hex(soundex(_utf8mb4 0xD091D092D093));
hex(soundex(_utf8mb4 0xD091D092D093))
D091303030
SET collation_connection='utf8mb4_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)
utf8mb4_general_ci	6109
utf8mb4_general_ci	61
utf8mb4_general_ci	6120
drop table t1;
select @@collation_connection;
@@collation_connection
utf8mb4_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;
"BEGIN ctype_german.inc"
drop table if exists t1;
create table t1 as select repeat(' ', 64) as s1;
select collation(s1) from t1;
collation(s1)
utf8mb4_general_ci
delete from t1;
INSERT INTO t1 VALUES ('ud'),('uf');
INSERT INTO t1 VALUES ('od'),('of');
INSERT INTO t1 VALUES ('e');
INSERT INTO t1 VALUES ('ad'),('af');
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);
INSERT INTO t1 VALUES (_latin1 0xE6), (_latin1 0xC6);
INSERT INTO t1 VALUES (_latin1 0x9C), (_latin1 0x8C);
select s1, hex(s1) from t1 order by s1, binary s1;
s1	hex(s1)
a	61
ä	C3A4
ad	6164
ae	6165
af	6166
e	65
o	6F
ö	C3B6
od	6F64
oe	6F65
of	6F66
s	73
ß	C39F
ss	7373
u	75
ü	C3BC
ud	7564
ue	7565
uf	7566
Æ	C386
æ	C3A6
Œ	C592
œ	C593
select group_concat(s1 order by binary s1) from t1 group by s1;
group_concat(s1 order by binary s1)
a,ä
ad
ae
af
e
o,ö
od
oe
of
s,ß
ss
u,ü
ud
ue
uf
Æ,æ
Œ,œ
SELECT s1, hex(s1), hex(weight_string(s1)) FROM t1 ORDER BY s1, BINARY(s1);
s1	hex(s1)	hex(weight_string(s1))
a	61	0041
ä	C3A4	0041
ad	6164	00410044
ae	6165	00410045
af	6166	00410046
e	65	0045
o	6F	004F
ö	C3B6	004F
od	6F64	004F0044
oe	6F65	004F0045
of	6F66	004F0046
s	73	0053
ß	C39F	0053
ss	7373	00530053
u	75	0055
ü	C3BC	0055
ud	7564	00550044
ue	7565	00550045
uf	7566	00550046
Æ	C386	00C6
æ	C3A6	00C6
Œ	C592	0152
œ	C593	0152
SELECT s1, hex(s1) FROM t1 WHERE s1='ae' ORDER BY s1, BINARY(s1);
s1	hex(s1)
ae	6165
drop table t1;
CREATE TABLE t1 AS SELECT REPEAT('a',1) AS a, 1 AS b LIMIT 0;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(1) CHARACTER SET utf8mb4 NOT NULL DEFAULT '',
  `b` int(1) NOT NULL DEFAULT '0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES ('s',0),(_latin1 0xDF,1);
SELECT * FROM t1 ORDER BY a, b;
a	b
s	0
ß	1
SELECT * FROM t1 ORDER BY a DESC, b;
a	b
s	0
ß	1
SELECT * FROM t1 ORDER BY CONCAT(a), b;
a	b
s	0
ß	1
SELECT * FROM t1 ORDER BY CONCAT(a) DESC, b;
a	b
s	0
ß	1
DROP TABLE t1;
"END ctype_german.inc"
SET collation_connection='utf8mb4_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)
utf8mb4_bin	6109
utf8mb4_bin	61
utf8mb4_bin	6120
drop table t1;
select @@collation_connection;
@@collation_connection
utf8mb4_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=heap DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES ('one'),('two');
SELECT CHARSET('a');
CHARSET('a')
utf8mb4
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 utf8mb4 engine heap;
insert into t1 values (''), ('');
select concat(concat(_latin1'->',f1),_latin1'<-') from t1;
concat(concat(_latin1'->',f1),_latin1'<-')
-><-
-><-
drop table t1;
select convert(_koi8r'�' using utf8mb4) < convert(_koi8r'�' using utf8mb4);
convert(_koi8r'?' using utf8mb4) < convert(_koi8r'?' using utf8mb4)
1
set names latin1;
create table t1 (a varchar(10)) character set utf8mb4 engine heap;
insert into t1 values ('test');
select ifnull(a,'') from t1;
ifnull(a,'')
test
drop table t1;
select repeat(_utf8mb4'+',3) as h union select NULL;
h
+++
NULL
select ifnull(NULL, _utf8mb4'string');
ifnull(NULL, _utf8mb4'string')
string
set names utf8mb4;
create table t1 (s1 char(5) character set utf8mb4 collate utf8mb4_lithuanian_ci) engine heap;
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 utf8mb4 collate utf8mb4_czech_ci) engine heap;
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 utf8mb4 engine heap;
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=utf8mb4 engine heap;
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 utf8mb4 engine heap;
ERROR 42000: Invalid default value for 'x'
create table t1 (x enum('A', 'B') default 0) character set utf8mb4 engine heap;
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=heap DEFAULT CHARSET=utf8mb4;
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=heap DEFAULT CHARSET=utf8mb4;
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 utf8mb4) engine heap;
insert into t1 values ('123456'),('андрей');
alter table t1 modify a char(2) character set utf8mb4;
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 utf8mb4;
select 'andre%' like 'andreñ%' escape 'ñ';
'andre%' like 'andreñ%' escape 'ñ'
1
set names utf8mb4;
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 utf8mb4 engine heap;
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=heap DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_general_ci;
insert into t1 values (_utf8mb4 0xe880bd);
insert into t1 values (_utf8mb4 0x5b);
select hex(a) from t1;
hex(a)
5B
E880BD
drop table t1;
set names 'latin1';
create table t1 (a varchar(255)) default charset=utf8mb4 engine heap;
select * from t1 where find_in_set('-1', a);
a
drop table t1;
create table t1 (a int) engine heap;
insert into t1 values (48),(49),(50);
set names utf8mb4;
select distinct char(a) from t1;
char(a)
0
1
2
drop table t1;
CREATE TABLE t1 (item varchar(255)) default character set utf8mb4 ENGINE heap;
INSERT INTO t1 VALUES (N'\\');
INSERT INTO t1 VALUES (_utf8mb4'\\');
INSERT INTO t1 VALUES (N'Cote d\'Ivoire');
INSERT INTO t1 VALUES (_utf8mb4'Cote d\'Ivoire');
SELECT item FROM t1 ORDER BY item;
item
Cote d'Ivoire
Cote d'Ivoire
\
\
DROP TABLE t1;
SET NAMES utf8mb4;
DROP TABLE IF EXISTS t1;
Warnings:
Note	1051	Unknown table 'test.t1'
CREATE TABLE t1(a VARCHAR(255), KEY(a)) ENGINE=heap DEFAULT CHARSET=utf8mb4;
INSERT INTO t1 VALUES('uuABCDEFGHIGKLMNOPRSTUVWXYZ̈bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
INSERT INTO t1 VALUES('uu');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
INSERT INTO t1 VALUES('uU');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
INSERT INTO t1 VALUES('uu');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
INSERT INTO t1 VALUES('uuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
INSERT INTO t1 VALUES('UuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
INSERT INTO t1 VALUES('uuABC');
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	note	The storage engine for the table doesn't support check
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	note	The storage engine for the table doesn't support check
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	note	The storage engine for the table doesn't support check
drop table t1;
set names utf8mb4;
create table t1 (s1 char(5) character set utf8mb4) engine heap;
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 utf8mb4;
create table t1 (s1 char(5) character set utf8mb4 collate utf8mb4_unicode_ci) engine heap;
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 utf8mb4;
create table t1 (s1 char(5) character set utf8mb4 collate utf8mb4_bin) engine heap;
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 utf8mb4;
create table t1 (a varchar(30) not null primary key)
engine=heap default character set utf8mb4 collate utf8mb4_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 utf8mb4;
create table t1 (a varchar(30) not null primary key)
engine=heap default character set utf8mb4 collate utf8mb4_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 utf8mb4;
create table t1 (a varchar(30) not null primary key)
engine=heap default character set utf8mb4 collate utf8mb4_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 utf8mb4;
CREATE TABLE t1 (id int PRIMARY KEY,
a varchar(16) collate utf8mb4_unicode_ci NOT NULL default '',
b int,
f varchar(128) default 'XXX',
INDEX (a(4))
) ENGINE=heap DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_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
10	eeeee	40
11	bbbbbb	60
2	cccc	70
3	cccc	30
4	cccc	30
5	cccc	20
6	bbbbbb	40
7	dddd	30
8	aaaa	10
9	aaaa	50
SELECT id, a, b FROM t1 WHERE a BETWEEN 'aaaa' AND 'bbbbbb';
id	a	b
11	bbbbbb	60
6	bbbbbb	40
8	aaaa	10
9	aaaa	50
SELECT id, a FROM t1 WHERE a='bbbbbb';
id	a
11	bbbbbb
6	bbbbbb
SELECT id, a FROM t1 WHERE a='bbbbbb' ORDER BY b;
id	a
6	bbbbbb
11	bbbbbb
DROP TABLE t1;
SET NAMES utf8mb4;
CREATE TABLE t1 (
a CHAR(13) DEFAULT '',
INDEX(a)
) ENGINE=heap DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_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=heap 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	ALL	a	NULL	NULL	NULL	12	Using where
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	53	const	4	Using where
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	ALL	a	NULL	NULL	NULL	12	Using where
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
DROP TABLE t1,t2;
CREATE TABLE t1 (
a char(255) DEFAULT '', 
KEY(a(10))
) ENGINE=heap DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_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=heap DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_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(a char(200) collate utf8mb4_unicode_ci NOT NULL default '')
default charset=utf8mb4 collate=utf8mb4_unicode_ci engine heap;
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 COUNT(*) FROM (SELECT DISTINCT a FROM t1) AS t2;
COUNT(*)
1
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 COUNT(*) FROM (SELECT a FROM t1 GROUP BY a) AS t2;
COUNT(*)
1
drop table t1;
create table t1(a char(10)) default charset utf8mb4 engine heap;
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 (flat, BNL join)
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;
SET CHARACTER SET utf8mb4;
SHOW VARIABLES LIKE 'character\_set\_%';
Variable_name	Value
character_set_client	utf8mb4
character_set_connection	latin1
character_set_database	latin1
character_set_filesystem	binary
character_set_results	utf8mb4
character_set_server	latin1
character_set_system	utf8
CREATE DATABASE crashtest DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
USE crashtest;
CREATE TABLE crashtest (crash char(10)) DEFAULT CHARSET=utf8mb4 ENGINE heap;
INSERT INTO crashtest VALUES ('35'), ('36'), ('37');
SELECT * FROM crashtest ORDER BY CHAR(crash USING utf8mb4);
crash
35
36
37
INSERT INTO crashtest VALUES ('-1000');
EXPLAIN SELECT * FROM crashtest ORDER BY CHAR(crash USING utf8mb4);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	crashtest	ALL	NULL	NULL	NULL	NULL	4	Using filesort
SELECT * FROM crashtest ORDER BY CHAR(crash USING utf8mb4);
crash
-1000
35
36
37
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FFFFFC'
DROP TABLE crashtest;
DROP DATABASE crashtest;
USE test;
SET CHARACTER SET default;
CREATE TABLE t1(id varchar(20) NOT NULL) DEFAULT CHARSET=utf8mb4 ENGINE heap;
INSERT INTO t1 VALUES ('xxx'), ('aa'), ('yyy'), ('aa');
SELECT id FROM t1;
id
aa
aa
xxx
yyy
SELECT DISTINCT id FROM t1;
id
aa
xxx
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 utf8mb4 ENGINE heap;
insert into t1 (a) values ('abcdefghijklmnopqrstuvwxyz');
select * from t1;
a
abcdefghijklmnopqrstuvwxyz
alter table t1 change a a varchar(20) character set utf8mb4 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 utf8mb4 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 utf8mb4 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 utf8mb4 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 utf8mb4 engine heap;
insert into t1 values (repeat('a',4000));
alter table t1 change a a varchar(3000) character set utf8mb4 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 utf8mb4;
select hex(char(1 using utf8mb4));
hex(char(1 using utf8mb4))
01
select char(0xd1,0x8f using utf8mb4);
char(0xd1,0x8f using utf8mb4)
я
select char(0xd18f using utf8mb4);
char(0xd18f using utf8mb4)
я
select char(53647 using utf8mb4);
char(53647 using utf8mb4)
я
select char(0xff,0x8f using utf8mb4);
char(0xff,0x8f using utf8mb4)

Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF8F'
select convert(char(0xff,0x8f) using utf8mb4);
convert(char(0xff,0x8f) using utf8mb4)

Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF8F'
set sql_mode=traditional;
select char(0xff,0x8f using utf8mb4);
char(0xff,0x8f using utf8mb4)
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF8F'
select char(195 using utf8mb4);
char(195 using utf8mb4)
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'C3'
select char(196 using utf8mb4);
char(196 using utf8mb4)
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'C4'
select char(2557 using utf8mb4);
char(2557 using utf8mb4)
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FD'
select convert(char(0xff,0x8f) using utf8mb4);
convert(char(0xff,0x8f) using utf8mb4)
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF8F'
select hex(convert(char(2557 using latin1) using utf8mb4));
hex(convert(char(2557 using latin1) using utf8mb4))
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 utf8mb4;
create table t1 (a char(1)) default character set utf8mb4 engine heap;
create table t2 (a char(1)) default character set utf8mb4 engine heap;
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
i
あ
い
drop table t1,t2;
set names utf8mb4;
create table t1 (a char(10), b varchar(10)) engine heap;
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 utf8mb4;
create table t1(col1 varchar(12) character set utf8mb4 collate utf8mb4_unicode_ci) engine heap;
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	utf8mb4_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	utf8mb4_unicode_ci
2	utf8mb4_unicode_ci
drop view v1, v2;
create view v1 as select 'v1_val' collate utf8mb4_swedish_ci as col1;
select coercibility(col1), collation(col1) from v1;
coercibility(col1)	collation(col1)
0	utf8mb4_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	utf8mb4_swedish_ci
0	utf8mb4_swedish_ci
drop view v1, v2;
drop table t1;
set names utf8mb4;
create table t1 (a varchar(10) character set latin1, b int) engine heap;
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 utf8mb4;
create table t1 (a varchar(10) character set latin1, b int) engine heap;
insert into t1 values ('a',1);
select concat(a, if(b>10, _utf8mb4'x', _utf8mb4'y')) from t1;
concat(a, if(b>10, _utf8mb4'x', _utf8mb4'y'))
ay
select concat(a, if(b>10, _utf8mb4'æ', _utf8mb4'ß')) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
set names utf8mb4;
create table t1 (a varchar(10) character set latin1, b int) engine heap;
insert into t1 values ('a',1);
select concat(a, if(b>10, _utf8mb4 0x78, _utf8mb4 0x79)) from t1;
concat(a, if(b>10, _utf8mb4 0x78, _utf8mb4 0x79))
ay
select concat(a, if(b>10, _utf8mb4 0xC3A6, _utf8mb4 0xC3AF)) from t1;
ERROR HY000: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
set names utf8mb4;
create table t1 (a varchar(10) character set latin1, b int) engine heap;
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 (utf8mb4_general_ci,COERCIBLE) for operation 'concat'
drop table t1;
CREATE TABLE t1 (
colA int(11) NOT NULL,
colB varchar(255) character set utf8mb4 NOT NULL,
PRIMARY KEY  (colA)
) ENGINE=heap 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 utf8mb4 NOT NULL,
KEY bad  (colA,colB(3))
) ENGINE=heap 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 utf8mb4 ENGINE heap;
CREATE TABLE t2 (b CHAR(1) CHARACTER SET binary, i INT) ENGINE heap;
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 utf8mb4));
hex(char(0xFF using utf8mb4))
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF'
select hex(convert(0xFF using utf8mb4));
hex(convert(0xFF using utf8mb4))
NULL
Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 0x616263FF);
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 X'616263FF');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 B'001111111111');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select (_utf8mb4 X'616263FF');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
set sql_mode=default;
select hex(char(0xFF using utf8mb4));
hex(char(0xFF using utf8mb4))

Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF'
select hex(convert(0xFF using utf8mb4));
hex(convert(0xFF using utf8mb4))

Warnings:
Warning	1300	Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 0x616263FF);
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 X'616263FF');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select hex(_utf8mb4 B'001111111111');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
select (_utf8mb4 X'616263FF');
ERROR HY000: Invalid utf8mb4 character string: 'FF'
CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL) ENGINE heap;
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)
70000	1092
70001	1085
70002	1065
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)
70000	1092
70001	1085
70002	1065
DROP INDEX b ON t1;
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) FROM t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70000	1092
70001	1085
70002	1065
ALTER TABLE t1 ADD INDEX (b);
SELECT CONVERT(a, CHAR), CONVERT(b, CHAR) from t1 GROUP BY b;
CONVERT(a, CHAR)	CONVERT(b, CHAR)
70000	1092
70001	1085
70002	1065
DROP TABLE t1;
#
# Bug#26474: Add Sinhala script (Sri Lanka) collation to MySQL
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
predicted_order int NOT NULL,
utf8mb4_encoding VARCHAR(10) NOT NULL
) CHARACTER SET utf8mb4 ENGINE heap;
INSERT INTO t1 VALUES (19, x'E0B696'), (30, x'E0B69AE0B798'), (61, x'E0B6AF'), (93, x'E0B799'), (52, x'E0B6A6'), (73, x'E0B6BBE0B78AE2808D'), (3, x'E0B686'), (56, x'E0B6AA'), (55, x'E0B6A9'), (70, x'E0B6B9'), (94, x'E0B79A'), (80, x'E0B785'), (25, x'E0B69AE0B791'), (48, x'E0B6A2'), (13, x'E0B690'), (86, x'E0B793'), (91, x'E0B79F'), (81, x'E0B786'), (79, x'E0B784'), (14, x'E0B691'), (99, x'E0B78A'), (8, x'E0B68B'), (68, x'E0B6B7'), (22, x'E0B69A'), (16, x'E0B693'), (33, x'E0B69AE0B7B3'), (38, x'E0B69AE0B79D'), (21, x'E0B683'), (11, x'E0B68E'), (77, x'E0B782'), (40, x'E0B69AE0B78A'), (101, x'E0B78AE2808DE0B6BB'), (35, x'E0B69AE0B79A'), (1, x'E0B7B4'), (9, x'E0B68C'), (96, x'E0B79C'), (6, x'E0B689'), (95, x'E0B79B'), (88, x'E0B796'), (64, x'E0B6B3'), (26, x'E0B69AE0B792'), (82, x'E0B78F'), (28, x'E0B69AE0B794'), (39, x'E0B69AE0B79E'), (97, x'E0B79D'), (2, x'E0B685'), (75, x'E0B780'), (34, x'E0B69AE0B799'), (69, x'E0B6B8'), (83, x'E0B790'), (18, x'E0B695'), (90, x'E0B7B2'), (17, x'E0B694'), (72, x'E0B6BB'), (66, x'E0B6B5'), (59, x'E0B6AD'), (44, x'E0B69E'), (15, x'E0B692'), (23, x'E0B69AE0B78F'), (65, x'E0B6B4'), (42, x'E0B69C'), (63, x'E0B6B1'), (85, x'E0B792'), (47, x'E0B6A1'), (49, x'E0B6A3'), (92, x'E0B7B3'), (78, x'E0B783'), (36, x'E0B69AE0B79B'), (4, x'E0B687'), (24, x'E0B69AE0B790'), (87, x'E0B794'), (37, x'E0B69AE0B79C'), (32, x'E0B69AE0B79F'), (29, x'E0B69AE0B796'), (43, x'E0B69D'), (62, x'E0B6B0'), (100, x'E0B78AE2808DE0B6BA'), (60, x'E0B6AE'), (45, x'E0B69F'), (12, x'E0B68F'), (46, x'E0B6A0'), (50, x'E0B6A5'), (51, x'E0B6A4'), (5, x'E0B688'), (76, x'E0B781'), (89, x'E0B798'), (74, x'E0B6BD'), (10, x'E0B68D'), (57, x'E0B6AB'), (71, x'E0B6BA'), (58, x'E0B6AC'), (27, x'E0B69AE0B793'), (54, x'E0B6A8'), (84, x'E0B791'), (31, x'E0B69AE0B7B2'), (98, x'E0B79E'), (53, x'E0B6A7'), (41, x'E0B69B'), (67, x'E0B6B6'), (7, x'E0B68A'), (20, x'E0B682');
SELECT predicted_order, hex(utf8mb4_encoding) FROM t1 ORDER BY utf8mb4_encoding COLLATE utf8mb4_sinhala_ci;
predicted_order	hex(utf8mb4_encoding)
1	E0B7B4
2	E0B685
3	E0B686
4	E0B687
5	E0B688
6	E0B689
7	E0B68A
8	E0B68B
9	E0B68C
10	E0B68D
11	E0B68E
12	E0B68F
13	E0B690
14	E0B691
15	E0B692
16	E0B693
17	E0B694
18	E0B695
19	E0B696
20	E0B682
21	E0B683
22	E0B69A
23	E0B69AE0B78F
24	E0B69AE0B790
25	E0B69AE0B791
26	E0B69AE0B792
27	E0B69AE0B793
28	E0B69AE0B794
29	E0B69AE0B796
30	E0B69AE0B798
31	E0B69AE0B7B2
32	E0B69AE0B79F
33	E0B69AE0B7B3
34	E0B69AE0B799
35	E0B69AE0B79A
36	E0B69AE0B79B
37	E0B69AE0B79C
38	E0B69AE0B79D
39	E0B69AE0B79E
40	E0B69AE0B78A
41	E0B69B
42	E0B69C
43	E0B69D
44	E0B69E
45	E0B69F
46	E0B6A0
47	E0B6A1
48	E0B6A2
49	E0B6A3
50	E0B6A5
51	E0B6A4
52	E0B6A6
53	E0B6A7
54	E0B6A8
55	E0B6A9
56	E0B6AA
57	E0B6AB
58	E0B6AC
59	E0B6AD
60	E0B6AE
61	E0B6AF
62	E0B6B0
63	E0B6B1
64	E0B6B3
65	E0B6B4
66	E0B6B5
67	E0B6B6
68	E0B6B7
69	E0B6B8
70	E0B6B9
71	E0B6BA
72	E0B6BB
73	E0B6BBE0B78AE2808D
74	E0B6BD
75	E0B780
76	E0B781
77	E0B782
78	E0B783
79	E0B784
80	E0B785
81	E0B786
82	E0B78F
83	E0B790
84	E0B791
85	E0B792
86	E0B793
87	E0B794
88	E0B796
89	E0B798
90	E0B7B2
91	E0B79F
92	E0B7B3
93	E0B799
94	E0B79A
95	E0B79B
96	E0B79C
97	E0B79D
98	E0B79E
99	E0B78A
100	E0B78AE2808DE0B6BA
101	E0B78AE2808DE0B6BB
DROP TABLE t1;
#
# Bug#32914 Character sets: illegal characters in utf8mb4 and utf32 columns
#
create table t1 (utf8mb4 char(1) character set utf8mb4) engine heap;
Testing [F0][90..BF][80..BF][80..BF]
insert into t1 values (0xF0908080);
insert into t1 values (0xF0BFBFBF);
insert into t1 values (0xF08F8080);
Warnings:
Warning	1366	Incorrect string value: '\xF0\x8F\x80\x80' for column 'utf8mb4' at row 1
select hex(utf8mb4) from t1;
hex(utf8mb4)

F0908080
F0BFBFBF
delete from t1;
Testing [F2..F3][80..BF][80..BF][80..BF]
insert into t1 values (0xF2808080);
insert into t1 values (0xF2BFBFBF);
select hex(utf8mb4) from t1;
hex(utf8mb4)
F2808080
F2BFBFBF
delete from t1;
Testing [F4][80..8F][80..BF][80..BF]
insert into t1 values (0xF4808080);
insert into t1 values (0xF48F8080);
insert into t1 values (0xF4908080);
Warnings:
Warning	1366	Incorrect string value: '\xF4\x90\x80\x80' for column 'utf8mb4' at row 1
select hex(utf8mb4) from t1;
hex(utf8mb4)

F4808080
F48F8080
drop table t1;
#
# Check strnxfrm() with odd length
#
set max_sort_length=5;
select @@max_sort_length;
@@max_sort_length
5
create table t1 (a varchar(128) character set utf8mb4 collate utf8mb4_general_ci) engine heap;
insert into t1 values ('a'),('b'),('c');
select * from t1 order by a;
a
a
b
c
alter table t1 modify a varchar(128) character set utf8mb4 collate utf8mb4_bin;
select * from t1 order by a;
a
a
b
c
drop table t1;
set max_sort_length=default;
#
# Bug#26180: Can't add columns to tables created with utf8mb4 text indexes
#
#
# Testing 4-byte values.
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
u_decimal int NOT NULL,
utf8mb4_encoding VARCHAR(10) NOT NULL
) CHARACTER SET utf8mb4 ENGINE heap;
INSERT INTO t1 VALUES (119040, x'f09d8480'),
# G CLEF
(119070, x'f09d849e'),
# HALF NOTE
(119134, x'f09d859e'),
# MUSICAL SYMBOL CROIX
(119247, x'f09d878f'),
# MATHEMATICAL BOLD ITALIC CAPITAL DELTA
(120607, x'f09d9c9f'),
# SANS-SERIF BOLD ITALIC CAPITAL PI
(120735, x'f09d9e9f'),
# <Plane 16 Private Use, Last> (last 4 byte character)
(1114111, x'f48fbfbf'),
# VARIATION SELECTOR-256
(917999, x'f3a087af');
INSERT INTO t1 VALUES (119070, x'f09d849ef09d859ef09d859ef09d8480f09d859ff09d859ff09d859ff09d85a0f09d85a0f09d8480');
INSERT INTO t1 VALUES (65131, x'efb9abf09d849ef09d859ef09d859ef09d8480f09d859fefb9abefb9abf09d85a0efb9ab');
INSERT INTO t1 VALUES (119070, x'f09d849ef09d859ef09d859ef09d8480f09d859ff09d859ff09d859ff09d85a0f09d85a0f09d8480f09d85a0');
Warnings:
Warning	1265	Data truncated for column 'utf8mb4_encoding' at row 1
SELECT u_decimal, hex(utf8mb4_encoding) FROM t1 ORDER BY utf8mb4_encoding COLLATE utf8mb4_general_ci, BINARY utf8mb4_encoding;
u_decimal	hex(utf8mb4_encoding)
1114111	F48FBFBF
119040	F09D8480
119070	F09D849E
119070	F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480
119070	F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480
119134	F09D859E
119247	F09D878F
120607	F09D9C9F
120735	F09D9E9F
65131	EFB9ABF09D849EF09D859EF09D859EF09D8480F09D859FEFB9ABEFB9ABF09D85A0EFB9AB
917999	F3A087AF
INSERT INTO t1 VALUES (1114111, x'f5808080');
Warnings:
Warning	1366	Incorrect string value: '\xF5\x80\x80\x80' for column 'utf8mb4_encoding' at row 1
SELECT character_maximum_length, character_octet_length FROM information_schema.columns WHERE
table_name= 't1' AND column_name= 'utf8mb4_encoding';
character_maximum_length	character_octet_length
10	40
DROP TABLE IF EXISTS t2;
CREATE TABLE t2 (
u_decimal int NOT NULL,
utf8mb3_encoding VARCHAR(10) NOT NULL
) CHARACTER SET utf8mb3 ENGINE heap;
INSERT INTO t2 VALUES (42856, x'ea9da8');
INSERT INTO t2 VALUES (65131, x'efb9ab');
INSERT INTO t2 VALUES (1114111, x'f48fbfbf');
Warnings:
Warning	1366	Incorrect string value: '\xF4\x8F\xBF\xBF' for column 'utf8mb3_encoding' at row 1
SELECT character_maximum_length, character_octet_length FROM information_schema.columns WHERE
table_name= 't2' AND column_name= 'utf8mb3_encoding';
character_maximum_length	character_octet_length
10	30
UPDATE t2 SET utf8mb3_encoding= x'f48fbfbd' where u_decimal= 42856;
Warnings:
Warning	1366	Incorrect string value: '\xF4\x8F\xBF\xBD' for column 'utf8mb3_encoding' at row 1
UPDATE t2 SET utf8mb3_encoding= _utf8mb4 x'ea9da8' where u_decimal= 42856;
SELECT HEX(CONCAT(utf8mb4_encoding, _utf8 x'ea9da8')) FROM t1;
HEX(CONCAT(utf8mb4_encoding, _utf8 x'ea9da8'))
EA9DA8
EFB9ABF09D849EF09D859EF09D859EF09D8480F09D859FEFB9ABEFB9ABF09D85A0EFB9ABEA9DA8
F09D8480EA9DA8
F09D849EEA9DA8
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EA9DA8
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EA9DA8
F09D859EEA9DA8
F09D878FEA9DA8
F09D9C9FEA9DA8
F09D9E9FEA9DA8
F3A087AFEA9DA8
F48FBFBFEA9DA8
SELECT HEX(CONCAT(utf8mb4_encoding, utf8mb3_encoding)) FROM t1,t2;
HEX(CONCAT(utf8mb4_encoding, utf8mb3_encoding))

EA9DA8
EFB9AB
EFB9ABF09D849EF09D859EF09D859EF09D8480F09D859FEFB9ABEFB9ABF09D85A0EFB9AB
EFB9ABF09D849EF09D859EF09D859EF09D8480F09D859FEFB9ABEFB9ABF09D85A0EFB9ABEA9DA8
EFB9ABF09D849EF09D859EF09D859EF09D8480F09D859FEFB9ABEFB9ABF09D85A0EFB9ABEFB9AB
F09D8480
F09D8480EA9DA8
F09D8480EFB9AB
F09D849E
F09D849EEA9DA8
F09D849EEFB9AB
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EA9DA8
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EA9DA8
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EFB9AB
F09D849EF09D859EF09D859EF09D8480F09D859FF09D859FF09D859FF09D85A0F09D85A0F09D8480EFB9AB
F09D859E
F09D859EEA9DA8
F09D859EEFB9AB
F09D878F
F09D878FEA9DA8
F09D878FEFB9AB
F09D9C9F
F09D9C9FEA9DA8
F09D9C9FEFB9AB
F09D9E9F
F09D9E9FEA9DA8
F09D9E9FEFB9AB
F3A087AF
F3A087AFEA9DA8
F3A087AFEFB9AB
F48FBFBF
F48FBFBFEA9DA8
F48FBFBFEFB9AB
SELECT count(*) FROM t1, t2
WHERE t1.utf8mb4_encoding > t2.utf8mb3_encoding;
count(*)
33
ALTER TABLE t1 CONVERT TO CHARACTER SET utf8;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb4_encoding` varchar(10) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SELECT u_decimal,hex(utf8mb4_encoding),utf8mb4_encoding FROM t1;
u_decimal	hex(utf8mb4_encoding)	utf8mb4_encoding
1114111		
1114111	3F	?
119040	3F	?
119070	3F	?
119070	3F3F3F3F3F3F3F3F3F3F	??????????
119070	3F3F3F3F3F3F3F3F3F3F	??????????
119134	3F	?
119247	3F	?
120607	3F	?
120735	3F	?
65131	EFB9AB3F3F3F3F3FEFB9ABEFB9AB3FEFB9AB	﹫?????﹫﹫?﹫
917999	3F	?
ALTER TABLE t2 CONVERT TO CHARACTER SET utf8mb4;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb3_encoding` varchar(10) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8mb4
SELECT u_decimal,hex(utf8mb3_encoding) FROM t2;
u_decimal	hex(utf8mb3_encoding)
1114111	
42856	EA9DA8
65131	EFB9AB
ALTER TABLE t2 CONVERT TO CHARACTER SET utf8mb3;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb3_encoding` varchar(10) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SELECT u_decimal,hex(utf8mb3_encoding) FROM t2;
u_decimal	hex(utf8mb3_encoding)
1114111	
42856	EA9DA8
65131	EFB9AB
ALTER TABLE t1 MODIFY utf8mb4_encoding VARCHAR(10) CHARACTER SET utf8mb3;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb4_encoding` varchar(10) DEFAULT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SELECT u_decimal,hex(utf8mb4_encoding) FROM t1;
u_decimal	hex(utf8mb4_encoding)
1114111	
1114111	3F
119040	3F
119070	3F
119070	3F3F3F3F3F3F3F3F3F3F
119070	3F3F3F3F3F3F3F3F3F3F
119134	3F
119247	3F
120607	3F
120735	3F
65131	EFB9AB3F3F3F3F3FEFB9ABEFB9AB3FEFB9AB
917999	3F
ALTER TABLE t1 MODIFY utf8mb4_encoding VARCHAR(10) CHARACTER SET utf8mb4;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb4_encoding` varchar(10) CHARACTER SET utf8mb4 DEFAULT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SELECT u_decimal,hex(utf8mb4_encoding) FROM t1;
u_decimal	hex(utf8mb4_encoding)
1114111	
1114111	3F
119040	3F
119070	3F
119070	3F3F3F3F3F3F3F3F3F3F
119070	3F3F3F3F3F3F3F3F3F3F
119134	3F
119247	3F
120607	3F
120735	3F
65131	EFB9AB3F3F3F3F3FEFB9ABEFB9AB3FEFB9AB
917999	3F
ALTER TABLE t2 MODIFY utf8mb3_encoding VARCHAR(10) CHARACTER SET utf8mb4;
SHOW CREATE TABLE t2;
Table	Create Table
t2	CREATE TABLE `t2` (
  `u_decimal` int(11) NOT NULL,
  `utf8mb3_encoding` varchar(10) CHARACTER SET utf8mb4 DEFAULT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
SELECT u_decimal,hex(utf8mb3_encoding) FROM t2;
u_decimal	hex(utf8mb3_encoding)
1114111	
42856	EA9DA8
65131	EFB9AB
DROP TABLE IF EXISTS t3;
CREATE TABLE t3 (
u_decimal int NOT NULL,
utf8mb3_encoding VARCHAR(10) NOT NULL
) CHARACTER SET utf8 ENGINE heap;
INSERT INTO t3 SELECT * FROM t1;
DROP TABLE IF EXISTS t4;
CREATE TABLE t4 (
u_decimal int NOT NULL,
utf8mb4_encoding VARCHAR(10) NOT NULL
) CHARACTER SET utf8mb4 ENGINE heap;
INSERT INTO t3 SELECT * FROM t2;
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
DROP TABLE t4;
#
# Testing that mixing utf8 and utf8mb4 collations returns utf8mb4
#
SELECT CHARSET(CONCAT(_utf8mb4'a',_utf8'b'));
CHARSET(CONCAT(_utf8mb4'a',_utf8'b'))
utf8mb4
CREATE TABLE t1 (utf8mb4 VARCHAR(10) CHARACTER SET utf8mb4 NOT NULL) ENGINE heap;
INSERT INTO t1 VALUES (x'ea9da8'),(x'f48fbfbf');
SELECT CONCAT(utf8mb4, _utf8 x'ea9da8') FROM t1 LIMIT 0;
CONCAT(utf8mb4, _utf8 x'ea9da8')
CREATE TABLE t2 (utf8mb3 VARCHAR(10) CHARACTER SET utf8mb3 NOT NULL) ENGINE heap;
INSERT INTO t2 VALUES (x'ea9da8');
SELECT HEX(CONCAT(utf8mb4, utf8mb3)) FROM t1,t2 ORDER BY 1;
HEX(CONCAT(utf8mb4, utf8mb3))
EA9DA8EA9DA8
F48FBFBFEA9DA8
SELECT CHARSET(CONCAT(utf8mb4, utf8mb3)) FROM t1, t2 LIMIT 1;
CHARSET(CONCAT(utf8mb4, utf8mb3))
utf8mb4
CREATE TEMPORARY TABLE t3 ENGINE heap AS SELECT *, concat(utf8mb4,utf8mb3) FROM t1, t2;
SHOW CREATE TABLE t3;
Table	Create Table
t3	CREATE TEMPORARY TABLE `t3` (
  `utf8mb4` varchar(10) CHARACTER SET utf8mb4 NOT NULL,
  `utf8mb3` varchar(10) CHARACTER SET utf8 NOT NULL,
  `concat(utf8mb4,utf8mb3)` varchar(20) CHARACTER SET utf8mb4 NOT NULL DEFAULT ''
) ENGINE=MEMORY DEFAULT CHARSET=latin1
DROP TEMPORARY TABLE t3;
SELECT * FROM t1, t2 WHERE t1.utf8mb4 > t2.utf8mb3;
utf8mb4	utf8mb3
􏿿	Ꝩ
SELECT * FROM t1, t2 WHERE t1.utf8mb4 = t2.utf8mb3;
utf8mb4	utf8mb3
Ꝩ	Ꝩ
SELECT * FROM t1, t2 WHERE t1.utf8mb4 < t2.utf8mb3;
utf8mb4	utf8mb3
DROP TABLE t1;
DROP TABLE t2;
#
# Check that mixing utf8mb4 with an invalid utf8 constant returns error
#
CREATE TABLE t1 (utf8mb4 VARCHAR(10) CHARACTER SET utf8mb4) ENGINE heap;
INSERT INTO t1 VALUES (x'f48fbfbf');
SELECT CONCAT(utf8mb4, _utf8 '�') FROM t1;
ERROR HY000: Illegal mix of collations (utf8mb4_general_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'concat'
SELECT CONCAT('a', _utf8 '�') FROM t1;
ERROR HY000: Illegal mix of collations (utf8mb4_general_ci,COERCIBLE) and (utf8_general_ci,COERCIBLE) for operation 'concat'
DROP TABLE t1;
#
# End of 5.5 tests
#
#
# End of tests
#
