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|
ALTER DATABASE test CHARACTER SET latin1 COLLATE latin1_swedish_ci;
SET default_storage_engine=InnoDB;
### Test 1 ###
create table worklog5743(a TEXT not null, primary key (a(1000))) ROW_FORMAT=DYNAMIC;
show warnings;
Level Code Message
insert into worklog5743 values(repeat("a", 20000));
update worklog5743 set a = (repeat("b", 16000));
SET sql_mode= '';
create index idx on worklog5743(a(2000));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
SET sql_mode= default;
begin;
update worklog5743 set a = (repeat("x", 17000));
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
connect con1,localhost,root,,;
select a = repeat("x", 17000) from worklog5743;
a = repeat("x", 17000)
0
select a = repeat("b", 16000) from worklog5743;
a = repeat("b", 16000)
1
connect con2,localhost,root,,;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a = repeat("x", 17000) from worklog5743;
a = repeat("x", 17000)
1
connection default;
rollback;
drop table worklog5743;
### Test 2 ###
create table worklog5743(a1 int, a2 TEXT not null) ROW_FORMAT=DYNAMIC;
show warnings;
Level Code Message
create index idx on worklog5743(a1, a2(1250));
show warnings;
Level Code Message
insert into worklog5743 values(9, repeat("a", 10000));
begin;
update worklog5743 set a1 = 1000;
connection con1;
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743 ref idx idx 5 const 1
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
a1 a2 = repeat("a", 10000)
9 1
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
a1 a2 = repeat("a", 10000)
connection default;
rollback;
drop table worklog5743;
### Test 3 ###
create table worklog5743(a1 int, a2 TEXT not null) ROW_FORMAT=DYNAMIC;
create index idx on worklog5743(a1, a2(50));
insert into worklog5743 values(9, repeat("a", 10000));
begin;
update worklog5743 set a1 = 1000;
connection con1;
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743 ref idx idx 5 const 1
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
a1 a2 = repeat("a", 10000)
9 1
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
a1 a2 = repeat("a", 10000)
connection default;
rollback;
drop table worklog5743;
### Test 4 ###
create table worklog5743_1(a1 int, a2 TEXT not null) KEY_BLOCK_SIZE=1;
create table worklog5743_2(a1 int, a2 TEXT not null) KEY_BLOCK_SIZE=2;
create table worklog5743_4(a1 int, a2 TEXT not null) KEY_BLOCK_SIZE=4;
create table worklog5743_8(a1 int, a2 TEXT, a3 TEXT) KEY_BLOCK_SIZE=8;
create index idx2 on worklog5743_1(a2(4000));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx3 on worklog5743_1(a2(436));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx4 on worklog5743_1(a2(290));
show warnings;
Level Code Message
create index idx5 on worklog5743_1(a1, a2(430));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx6 on worklog5743_1(a1, a2(283));
show warnings;
Level Code Message
create index idx2 on worklog5743_2(a2(4000));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx3 on worklog5743_2(a2(948));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx4 on worklog5743_2(a2(802));
show warnings;
Level Code Message
create index idx5 on worklog5743_2(a1, a2(942));
ERROR 42000: Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
show warnings;
Level Code Message
Error 1118 Row size too large. The maximum row size for the used table type, not counting BLOBs, is 4030. This includes storage overhead, check the manual. You have to change some columns to TEXT or BLOBs
create index idx6 on worklog5743_2(a1, a2(795));
show warnings;
Level Code Message
create index idx3 on worklog5743_4(a2(1537));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
create index idx4 on worklog5743_4(a2(1536));
Warnings:
Note 1831 Duplicate index `idx4`. This is deprecated and will be disallowed in a future release
show warnings;
Level Code Message
Note 1831 Duplicate index `idx4`. This is deprecated and will be disallowed in a future release
create index idx5 on worklog5743_4(a1, a2(1533));
ERROR 42000: Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Error 1071 Specified key was too long; max key length is 1536 bytes
create index idx6 on worklog5743_4(a1, a2(1532));
show warnings;
Level Code Message
create index idx2 on worklog5743_8(a2(3073));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
create index idx3 on worklog5743_8(a2(3072));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
Note 1831 Duplicate index `idx3`. This is deprecated and will be disallowed in a future release
show warnings;
Level Code Message
Note 1071 Specified key was too long; max key length is 1536 bytes
Note 1831 Duplicate index `idx3`. This is deprecated and will be disallowed in a future release
create index idx4 on worklog5743_8(a1, a2(1533));
ERROR 42000: Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Error 1071 Specified key was too long; max key length is 1536 bytes
create index idx5 on worklog5743_8(a1, a2(1532));
show warnings;
Level Code Message
SET sql_mode= default;
insert into worklog5743_1 values(9, repeat("a", 10000));
insert into worklog5743_2 values(9, repeat("a", 10000));
insert into worklog5743_4 values(9, repeat("a", 10000));
insert into worklog5743_8 values(9, repeat("a", 10000), repeat("a", 10000));
select a1, left(a2, 20) from worklog5743_1;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_2;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_4;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_8;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
begin;
update worklog5743_1 set a1 = 1000;
update worklog5743_2 set a1 = 1000;
update worklog5743_4 set a1 = 1000;
update worklog5743_8 set a1 = 1000;
select a1, left(a2, 20) from worklog5743_1;
a1 left(a2, 20)
1000 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_2;
a1 left(a2, 20)
1000 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_4;
a1 left(a2, 20)
1000 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_8;
a1 left(a2, 20)
1000 aaaaaaaaaaaaaaaaaaaa
connection con1;
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
explain select a1, left(a2, 20) from worklog5743_1 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743_1 ref idx6 idx6 5 const 1
explain select a1, left(a2, 20) from worklog5743_2 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743_2 ref idx6 idx6 5 const 1
explain select a1, left(a2, 20) from worklog5743_4 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743_4 ref idx6 idx6 5 const 1
explain select a1, left(a2, 20) from worklog5743_8 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743_8 ref idx5 idx5 5 const 1
select a1, left(a2, 20) from worklog5743_1 where a1 = 9;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_2 where a1 = 9;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_4 where a1 = 9;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
select a1, left(a2, 20) from worklog5743_8 where a1 = 9;
a1 left(a2, 20)
9 aaaaaaaaaaaaaaaaaaaa
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a1, left(a2, 20) from worklog5743_1 where a1 = 9;
a1 left(a2, 20)
select a1, left(a2, 20) from worklog5743_2 where a1 = 9;
a1 left(a2, 20)
select a1, left(a2, 20) from worklog5743_4 where a1 = 9;
a1 left(a2, 20)
select a1, left(a2, 20) from worklog5743_8 where a1 = 9;
a1 left(a2, 20)
connection default;
rollback;
drop table worklog5743_1;
drop table worklog5743_2;
drop table worklog5743_4;
drop table worklog5743_8;
### Test 5 ###
create table worklog5743(a1 int, a2 varchar(20000)) ROW_FORMAT=DYNAMIC;
create index idx1 on worklog5743(a2);
ERROR 42000: Specified key was too long; max key length is 1536 bytes
drop table worklog5743;
create table worklog5743(a1 int, a2 varchar(1537)) ROW_FORMAT=DYNAMIC;
create index idx1 on worklog5743(a2);
ERROR 42000: Specified key was too long; max key length is 1536 bytes
drop table worklog5743;
create table worklog5743(a1 int, a2 varchar(1536)) ROW_FORMAT=DYNAMIC;
create index idx1 on worklog5743(a2);
show warnings;
Level Code Message
insert into worklog5743 values(9, repeat("a", 1536));
update worklog5743 set a1 = 1000;
drop table worklog5743;
create table worklog5743(a1 int, a2 varchar(1533)) ROW_FORMAT=DYNAMIC;
create index idx1 on worklog5743(a1, a2);
ERROR 42000: Specified key was too long; max key length is 1536 bytes
show warnings;
Level Code Message
Error 1071 Specified key was too long; max key length is 1536 bytes
drop table worklog5743;
create table worklog5743(a1 int, a2 varchar(1532)) ROW_FORMAT=DYNAMIC;
create index idx1 on worklog5743(a1, a2);
show warnings;
Level Code Message
insert into worklog5743 values(9, repeat("a", 1532));
update worklog5743 set a1 = 1000;
begin;
update worklog5743 set a1 = 1000;
connection con1;
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
explain select a1 from worklog5743 where a1 = 9;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE worklog5743 ref idx1 idx1 5 const 1 Using index
select a1 from worklog5743 where a1 = 9;
a1
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a1 from worklog5743 where a1 = 9;
a1
connection default;
rollback;
drop table worklog5743;
### Test 6 ###
create table worklog5743(a TEXT not null, primary key (a(1000)))
row_format=compact;
ERROR HY000: Index column size too large. The maximum column size is 767 bytes
create table worklog5743(a TEXT) row_format=compact;
create index idx on worklog5743(a(768));
ERROR HY000: Index column size too large. The maximum column size is 767 bytes
create index idx on worklog5743(a(767));
insert into worklog5743 values(repeat("a", 20000));
begin;
insert into worklog5743 values(repeat("b", 20000));
update worklog5743 set a = (repeat("x", 25000));
select @@session.transaction_isolation;
@@session.transaction_isolation
REPEATABLE-READ
connection con1;
select a = repeat("a", 20000) from worklog5743;
a = repeat("a", 20000)
1
disconnect con1;
connection con2;
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
select @@session.transaction_isolation;
@@session.transaction_isolation
READ-UNCOMMITTED
select a = repeat("x", 25000) from worklog5743;
a = repeat("x", 25000)
1
1
disconnect con2;
connection default;
rollback;
drop table worklog5743;
### Test 7 ###
create table worklog5743(a TEXT not null) ROW_FORMAT=DYNAMIC;
SET sql_mode= '';
create index idx1 on worklog5743(a(3073));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
create index idx2 on worklog5743(a(3072));
Warnings:
Note 1071 Specified key was too long; max key length is 1536 bytes
Note 1831 Duplicate index `idx2`. This is deprecated and will be disallowed in a future release
SET sql_mode= default;
show create table worklog5743;
Table Create Table
worklog5743 CREATE TABLE `worklog5743` (
`a` text NOT NULL,
KEY `idx1` (`a`(1536)),
KEY `idx2` (`a`(1536))
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
drop table worklog5743;
create table worklog5743(a TEXT not null) ROW_FORMAT=REDUNDANT;
create index idx on worklog5743(a(768));
ERROR HY000: Index column size too large. The maximum column size is 767 bytes
create index idx2 on worklog5743(a(767));
drop table worklog5743;
create table worklog5743(a TEXT not null) ROW_FORMAT=COMPACT;
create index idx on worklog5743(a(768));
ERROR HY000: Index column size too large. The maximum column size is 767 bytes
create index idx2 on worklog5743(a(767));
drop table worklog5743;
ALTER DATABASE test CHARACTER SET utf8mb4 COLLATE utf8mb4_uca1400_ai_ci;
|
