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Implement worklog #5743 InnoDB: Lift the limit of index key prefixes.
With this change, the index prefix column length lifted from 767 bytes to 3072 bytes if "innodb_large_prefix" is set to "true". rb://603 approved by Marko
This commit is contained in:
Jimmy Yang
@@ -842,31 +842,31 @@ create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob,
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i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob,
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q blob,r blob,s blob,t blob,u blob)
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engine=innodb row_format=dynamic;
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create index t1a on t1 (a(1));
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create index t1b on t1 (b(1));
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create index t1c on t1 (c(1));
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create index t1d on t1 (d(1));
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create index t1e on t1 (e(1));
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create index t1f on t1 (f(1));
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create index t1g on t1 (g(1));
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create index t1h on t1 (h(1));
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create index t1i on t1 (i(1));
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create index t1j on t1 (j(1));
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create index t1k on t1 (k(1));
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create index t1l on t1 (l(1));
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create index t1m on t1 (m(1));
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create index t1n on t1 (n(1));
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create index t1o on t1 (o(1));
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create index t1p on t1 (p(1));
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create index t1q on t1 (q(1));
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create index t1r on t1 (r(1));
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create index t1s on t1 (s(1));
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create index t1t on t1 (t(1));
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create index t1u on t1 (u(1));
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create index t1a on t1 (a(767));
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create index t1b on t1 (b(767));
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create index t1c on t1 (c(767));
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create index t1d on t1 (d(767));
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create index t1e on t1 (e(767));
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create index t1f on t1 (f(767));
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create index t1g on t1 (g(767));
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create index t1h on t1 (h(767));
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create index t1i on t1 (i(767));
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create index t1j on t1 (j(767));
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create index t1k on t1 (k(767));
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create index t1l on t1 (l(767));
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create index t1m on t1 (m(767));
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create index t1n on t1 (n(767));
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create index t1o on t1 (o(767));
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create index t1p on t1 (p(767));
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create index t1q on t1 (q(767));
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create index t1r on t1 (r(767));
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create index t1s on t1 (s(767));
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create index t1t on t1 (t(767));
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create index t1u on t1 (u(767));
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ERROR HY000: Too big row
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create index t1ut on t1 (u(1), t(1));
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create index t1ut on t1 (u(767), t(767));
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ERROR HY000: Too big row
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create index t1st on t1 (s(1), t(1));
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create index t1st on t1 (s(767), t(767));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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@@ -891,32 +891,32 @@ t1 CREATE TABLE `t1` (
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`s` blob,
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`t` blob,
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`u` blob,
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KEY `t1a` (`a`(1)),
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KEY `t1b` (`b`(1)),
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KEY `t1c` (`c`(1)),
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KEY `t1d` (`d`(1)),
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KEY `t1e` (`e`(1)),
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KEY `t1f` (`f`(1)),
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KEY `t1g` (`g`(1)),
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KEY `t1h` (`h`(1)),
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KEY `t1i` (`i`(1)),
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KEY `t1j` (`j`(1)),
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KEY `t1k` (`k`(1)),
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KEY `t1l` (`l`(1)),
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KEY `t1m` (`m`(1)),
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KEY `t1n` (`n`(1)),
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KEY `t1o` (`o`(1)),
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KEY `t1p` (`p`(1)),
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KEY `t1q` (`q`(1)),
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KEY `t1r` (`r`(1)),
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KEY `t1s` (`s`(1)),
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KEY `t1t` (`t`(1)),
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KEY `t1st` (`s`(1),`t`(1))
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KEY `t1a` (`a`(767)),
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KEY `t1b` (`b`(767)),
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KEY `t1c` (`c`(767)),
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KEY `t1d` (`d`(767)),
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KEY `t1e` (`e`(767)),
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KEY `t1f` (`f`(767)),
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KEY `t1g` (`g`(767)),
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KEY `t1h` (`h`(767)),
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KEY `t1i` (`i`(767)),
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KEY `t1j` (`j`(767)),
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KEY `t1k` (`k`(767)),
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KEY `t1l` (`l`(767)),
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KEY `t1m` (`m`(767)),
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KEY `t1n` (`n`(767)),
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KEY `t1o` (`o`(767)),
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KEY `t1p` (`p`(767)),
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KEY `t1q` (`q`(767)),
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KEY `t1r` (`r`(767)),
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KEY `t1s` (`s`(767)),
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KEY `t1t` (`t`(767)),
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KEY `t1st` (`s`(767),`t`(767))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
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create index t1u on t1 (u(1));
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create index t1u on t1 (u(767));
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ERROR HY000: Too big row
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alter table t1 row_format=compact;
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create index t1u on t1 (u(1));
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create index t1u on t1 (u(767));
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drop table t1;
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set global innodb_file_per_table=0;
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set global innodb_file_format=Antelope;
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185
mysql-test/suite/innodb/r/innodb_index_large_prefix.result
Normal file
185
mysql-test/suite/innodb/r/innodb_index_large_prefix.result
Normal file
@@ -0,0 +1,185 @@
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set global innodb_file_format="Barracuda";
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set global innodb_file_per_table=1;
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set global innodb_large_prefix=1;
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create table worklog5743(a TEXT not null, primary key (a(1000)))
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ROW_FORMAT=DYNAMIC, engine = innodb;
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insert into worklog5743 values(repeat("a", 20000));
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update worklog5743 set a = (repeat("b", 16000));
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create index idx on worklog5743(a(2000));
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begin;
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update worklog5743 set a = (repeat("x", 17000));
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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select a = repeat("x", 17000) from worklog5743;
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a = repeat("x", 17000)
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0
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select a = repeat("b", 16000) from worklog5743;
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a = repeat("b", 16000)
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1
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a = repeat("x", 17000) from worklog5743;
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a = repeat("x", 17000)
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1
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rollback;
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drop table worklog5743;
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create table worklog5743(a1 int, a2 TEXT not null)
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ROW_FORMAT=DYNAMIC, engine = innodb;
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create index idx on worklog5743(a1, a2(2000));
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insert into worklog5743 values(9, repeat("a", 10000));
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begin;
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update worklog5743 set a1 = 1000;
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE worklog5743 ref idx idx 5 const 1 Using where
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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9 1
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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rollback;
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drop table worklog5743;
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create table worklog5743(a1 int, a2 TEXT not null)
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ROW_FORMAT=DYNAMIC, engine = innodb;
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create index idx on worklog5743(a1, a2(50));
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insert into worklog5743 values(9, repeat("a", 10000));
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begin;
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update worklog5743 set a1 = 1000;
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE worklog5743 ref idx idx 5 const 1 Using where
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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9 1
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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rollback;
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drop table worklog5743;
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create table worklog5743_2(a1 int, a2 TEXT not null)
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ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb;
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create table worklog5743_4(a1 int, a2 TEXT not null)
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ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4, engine = innodb;
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create index idx1 on worklog5743_2(a1, a2(942));
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ERROR HY000: Too big row
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create index idx1 on worklog5743_2(a1, a2(940));
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create index idx1 on worklog5743_4(a1, a2(1966));
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ERROR HY000: Too big row
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create index idx1 on worklog5743_4(a1, a2(1964));
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insert into worklog5743_2 values(9, repeat("a", 10000));
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insert into worklog5743_4 values(9, repeat("a", 10000));
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begin;
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update worklog5743_2 set a1 = 1000;
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update worklog5743_4 set a1 = 1000;
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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explain select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE worklog5743_2 ref idx1 idx1 5 const 1 Using where
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select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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9 1
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select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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9 1
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
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a1 a2 = repeat("a", 10000)
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rollback;
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drop table worklog5743_2;
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drop table worklog5743_4;
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create table worklog5743(a1 int, a2 varchar(3000))
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ROW_FORMAT=DYNAMIC, engine = innodb;
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create index idx on worklog5743(a1, a2);
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insert into worklog5743 values(9, repeat("a", 3000));
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begin;
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update worklog5743 set a1 = 1000;
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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explain select a1 from worklog5743 where a1 = 9;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE worklog5743 ref idx idx 5 const 1 Using where; Using index
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select a1 from worklog5743 where a1 = 9;
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a1
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9
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a1 from worklog5743 where a1 = 9;
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a1
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rollback;
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drop table worklog5743;
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create table worklog5743(a TEXT not null, primary key (a(1000)))
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engine = innodb;
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ERROR HY000: Index column size too large. The maximum column size is 767 bytes.
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create table worklog5743(a TEXT) engine = innodb;
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create index idx on worklog5743(a(1000));
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ERROR HY000: Index column size too large. The maximum column size is 767 bytes.
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create index idx on worklog5743(a(725));
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insert into worklog5743 values(repeat("a", 20000));
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begin;
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insert into worklog5743 values(repeat("b", 20000));
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update worklog5743 set a = (repeat("x", 25000));
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select @@session.tx_isolation;
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@@session.tx_isolation
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REPEATABLE-READ
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select a = repeat("a", 20000) from worklog5743;
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a = repeat("a", 20000)
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1
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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@@session.tx_isolation
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READ-UNCOMMITTED
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select a = repeat("x", 25000) from worklog5743;
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a = repeat("x", 25000)
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1
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1
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rollback;
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drop table worklog5743;
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create table worklog5743(a TEXT not null) ROW_FORMAT=DYNAMIC, engine = innodb;
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create index idx on worklog5743(a(3073));
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Warnings:
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Warning 1071 Specified key was too long; max key length is 3072 bytes
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Warning 1071 Specified key was too long; max key length is 3072 bytes
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create index idx2 on worklog5743(a(3072));
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show create table worklog5743;
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Table Create Table
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worklog5743 CREATE TABLE `worklog5743` (
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`a` text NOT NULL,
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KEY `idx` (`a`(3072)),
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KEY `idx2` (`a`(3072))
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) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
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drop table worklog5743;
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create table worklog5743(a TEXT not null) engine = innodb;
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create index idx on worklog5743(a(768));
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ERROR HY000: Index column size too large. The maximum column size is 767 bytes.
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create index idx2 on worklog5743(a(767));
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drop table worklog5743;
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SET GLOBAL innodb_file_format=Antelope;
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SET GLOBAL innodb_file_per_table=0;
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SET GLOBAL innodb_file_format_max=Antelope;
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SET GLOBAL innodb_large_prefix=0;
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@@ -369,36 +369,36 @@ create table t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob,
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i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob,
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q blob,r blob,s blob,t blob,u blob)
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engine=innodb row_format=dynamic;
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create index t1a on t1 (a(1));
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create index t1b on t1 (b(1));
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create index t1c on t1 (c(1));
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create index t1d on t1 (d(1));
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create index t1e on t1 (e(1));
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create index t1f on t1 (f(1));
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create index t1g on t1 (g(1));
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create index t1h on t1 (h(1));
|
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create index t1i on t1 (i(1));
|
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create index t1j on t1 (j(1));
|
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create index t1k on t1 (k(1));
|
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create index t1l on t1 (l(1));
|
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create index t1m on t1 (m(1));
|
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create index t1n on t1 (n(1));
|
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create index t1o on t1 (o(1));
|
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create index t1p on t1 (p(1));
|
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create index t1q on t1 (q(1));
|
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create index t1r on t1 (r(1));
|
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create index t1s on t1 (s(1));
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create index t1t on t1 (t(1));
|
||||
create index t1a on t1 (a(767));
|
||||
create index t1b on t1 (b(767));
|
||||
create index t1c on t1 (c(767));
|
||||
create index t1d on t1 (d(767));
|
||||
create index t1e on t1 (e(767));
|
||||
create index t1f on t1 (f(767));
|
||||
create index t1g on t1 (g(767));
|
||||
create index t1h on t1 (h(767));
|
||||
create index t1i on t1 (i(767));
|
||||
create index t1j on t1 (j(767));
|
||||
create index t1k on t1 (k(767));
|
||||
create index t1l on t1 (l(767));
|
||||
create index t1m on t1 (m(767));
|
||||
create index t1n on t1 (n(767));
|
||||
create index t1o on t1 (o(767));
|
||||
create index t1p on t1 (p(767));
|
||||
create index t1q on t1 (q(767));
|
||||
create index t1r on t1 (r(767));
|
||||
create index t1s on t1 (s(767));
|
||||
create index t1t on t1 (t(767));
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--error 139
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||||
create index t1u on t1 (u(1));
|
||||
create index t1u on t1 (u(767));
|
||||
--error 139
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||||
create index t1ut on t1 (u(1), t(1));
|
||||
create index t1st on t1 (s(1), t(1));
|
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create index t1ut on t1 (u(767), t(767));
|
||||
create index t1st on t1 (s(767), t(767));
|
||||
show create table t1;
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||||
--error 139
|
||||
create index t1u on t1 (u(1));
|
||||
create index t1u on t1 (u(767));
|
||||
alter table t1 row_format=compact;
|
||||
create index t1u on t1 (u(1));
|
||||
create index t1u on t1 (u(767));
|
||||
|
||||
drop table t1;
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||||
eval set global innodb_file_per_table=$per_table;
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|
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271
mysql-test/suite/innodb/t/innodb_index_large_prefix.test
Normal file
271
mysql-test/suite/innodb/t/innodb_index_large_prefix.test
Normal file
@@ -0,0 +1,271 @@
|
||||
# Testcase for worklog #5743: Lift the limit of index key prefixes
|
||||
|
||||
--source include/have_innodb.inc
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||||
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||||
let $innodb_file_format_orig=`select @@innodb_file_format`;
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||||
let $innodb_file_per_table_orig=`select @@innodb_file_per_table`;
|
||||
let $innodb_file_format_max_orig=`select @@innodb_file_format_max`;
|
||||
let $innodb_large_prefix_orig=`select @@innodb_large_prefix`;
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||||
|
||||
set global innodb_file_format="Barracuda";
|
||||
set global innodb_file_per_table=1;
|
||||
set global innodb_large_prefix=1;
|
||||
|
||||
# Create a table of DYNAMIC format, with a primary index of 1000 bytes in
|
||||
# size
|
||||
create table worklog5743(a TEXT not null, primary key (a(1000)))
|
||||
ROW_FORMAT=DYNAMIC, engine = innodb;
|
||||
|
||||
# Do some insertion and update to excercise the external cache
|
||||
# code path
|
||||
insert into worklog5743 values(repeat("a", 20000));
|
||||
|
||||
# default session, update the table
|
||||
update worklog5743 set a = (repeat("b", 16000));
|
||||
|
||||
# Create a secondary index
|
||||
create index idx on worklog5743(a(2000));
|
||||
|
||||
# Start a few sessions to do selections on table being updated in default
|
||||
# session, so it would rebuild the previous version from undo log.
|
||||
# 1) Default session: Initiate an update on the externally stored column
|
||||
# 2) Session con1: Select from table with repeated read
|
||||
# 3) Session con2: Select from table with read uncommitted
|
||||
# 4) Default session: rollback updates
|
||||
|
||||
begin;
|
||||
update worklog5743 set a = (repeat("x", 17000));
|
||||
|
||||
# Start a new session to select the column to force it build
|
||||
# an earlier version of the clustered index through undo log. So it should
|
||||
# just see the result of repeat("b", 16000)
|
||||
select @@session.tx_isolation;
|
||||
--connect (con1,localhost,root,,)
|
||||
select a = repeat("x", 17000) from worklog5743;
|
||||
select a = repeat("b", 16000) from worklog5743;
|
||||
|
||||
# Start another session doing "read uncommitted" query, it
|
||||
# should see the uncommitted update
|
||||
--connect (con2,localhost,root,,)
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a = repeat("x", 17000) from worklog5743;
|
||||
|
||||
# Roll back the transaction
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# Create a table with only a secondary index has large prefix column
|
||||
create table worklog5743(a1 int, a2 TEXT not null)
|
||||
ROW_FORMAT=DYNAMIC, engine = innodb;
|
||||
|
||||
create index idx on worklog5743(a1, a2(2000));
|
||||
|
||||
insert into worklog5743 values(9, repeat("a", 10000));
|
||||
|
||||
begin;
|
||||
|
||||
update worklog5743 set a1 = 1000;
|
||||
|
||||
# Do a select from another connection that would use the secondary index
|
||||
--connection con1
|
||||
select @@session.tx_isolation;
|
||||
explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
|
||||
# Do read uncommitted in another session, it would show there is no
|
||||
# row with a1 = 9
|
||||
--connection con2
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# Create a table with a secondary index has small (50 bytes) prefix column
|
||||
create table worklog5743(a1 int, a2 TEXT not null)
|
||||
ROW_FORMAT=DYNAMIC, engine = innodb;
|
||||
|
||||
create index idx on worklog5743(a1, a2(50));
|
||||
|
||||
insert into worklog5743 values(9, repeat("a", 10000));
|
||||
|
||||
begin;
|
||||
|
||||
update worklog5743 set a1 = 1000;
|
||||
|
||||
# Do a select from another connection that would use the secondary index
|
||||
--connection con1
|
||||
select @@session.tx_isolation;
|
||||
explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
|
||||
# Do read uncommitted in another session, it would show there is no
|
||||
# row with a1 = 9
|
||||
--connection con2
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
|
||||
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# Create a table of ROW_FORMAT=COMPRESSED format
|
||||
create table worklog5743_2(a1 int, a2 TEXT not null)
|
||||
ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2, engine = innodb;
|
||||
|
||||
create table worklog5743_4(a1 int, a2 TEXT not null)
|
||||
ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4, engine = innodb;
|
||||
|
||||
# The maximum overall index record (not prefix) length for this table
|
||||
# is page_zip_empty_size() / 2, which is 960. "Too big row" error (
|
||||
# HA_ERR_TO_BIG_ROW) will be printed if this limit is exceeded.
|
||||
# Considering other fields and their overhead, the maximum length
|
||||
# for column a2 is 940 or 941 depending on the zlib version used and
|
||||
# compressBound() value used in page_zip_empty_size() (please refer
|
||||
# to Bug #47495 for more detail).
|
||||
-- error 139
|
||||
create index idx1 on worklog5743_2(a1, a2(942));
|
||||
|
||||
create index idx1 on worklog5743_2(a1, a2(940));
|
||||
|
||||
# similarly, the maximum index record length for the table is
|
||||
# 1984. Considering other fields and their overhead, the
|
||||
# maximum length for column a2 is 1964 or 1965 (please refer
|
||||
# to Bug #47495 for more detail).
|
||||
-- error 139
|
||||
create index idx1 on worklog5743_4(a1, a2(1966));
|
||||
|
||||
create index idx1 on worklog5743_4(a1, a2(1964));
|
||||
|
||||
insert into worklog5743_2 values(9, repeat("a", 10000));
|
||||
insert into worklog5743_4 values(9, repeat("a", 10000));
|
||||
|
||||
begin;
|
||||
|
||||
update worklog5743_2 set a1 = 1000;
|
||||
update worklog5743_4 set a1 = 1000;
|
||||
|
||||
# Do a select from another connection that would use the secondary index
|
||||
--connection con1
|
||||
select @@session.tx_isolation;
|
||||
explain select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
|
||||
|
||||
# Do read uncommitted in another session, it would show there is no
|
||||
# row with a1 = 9
|
||||
--connection con2
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
|
||||
select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
|
||||
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743_2;
|
||||
drop table worklog5743_4;
|
||||
|
||||
# Create a table with varchar column, and create index directly on this
|
||||
# large column (without prefix)
|
||||
create table worklog5743(a1 int, a2 varchar(3000))
|
||||
ROW_FORMAT=DYNAMIC, engine = innodb;
|
||||
|
||||
# Create an index with large column without prefix
|
||||
create index idx on worklog5743(a1, a2);
|
||||
|
||||
insert into worklog5743 values(9, repeat("a", 3000));
|
||||
|
||||
begin;
|
||||
|
||||
update worklog5743 set a1 = 1000;
|
||||
|
||||
# Do a select from another connection that would use the secondary index
|
||||
--connection con1
|
||||
select @@session.tx_isolation;
|
||||
explain select a1 from worklog5743 where a1 = 9;
|
||||
select a1 from worklog5743 where a1 = 9;
|
||||
|
||||
# Do read uncommitted, it would show there is no row with a1 = 9
|
||||
--connection con2
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a1 from worklog5743 where a1 = 9;
|
||||
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# Create a table with old format, and the limit is 768 bytes.
|
||||
-- error ER_INDEX_COLUMN_TOO_LONG
|
||||
create table worklog5743(a TEXT not null, primary key (a(1000)))
|
||||
engine = innodb;
|
||||
|
||||
create table worklog5743(a TEXT) engine = innodb;
|
||||
|
||||
# Excercise the column length check in ha_innobase::add_index()
|
||||
-- error ER_INDEX_COLUMN_TOO_LONG
|
||||
create index idx on worklog5743(a(1000));
|
||||
|
||||
# This should be successful
|
||||
create index idx on worklog5743(a(725));
|
||||
|
||||
# Perform some DMLs
|
||||
insert into worklog5743 values(repeat("a", 20000));
|
||||
|
||||
begin;
|
||||
insert into worklog5743 values(repeat("b", 20000));
|
||||
update worklog5743 set a = (repeat("x", 25000));
|
||||
|
||||
# Start a new session to select the table to force it build
|
||||
# an earlier version of the cluster index through undo log
|
||||
select @@session.tx_isolation;
|
||||
--connection con1
|
||||
select a = repeat("a", 20000) from worklog5743;
|
||||
|
||||
--connection con2
|
||||
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
||||
select @@session.tx_isolation;
|
||||
select a = repeat("x", 25000) from worklog5743;
|
||||
|
||||
--connection default
|
||||
rollback;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# Some border line test on the column length.
|
||||
# We have a limit of 3072 bytes for Barracuda table
|
||||
create table worklog5743(a TEXT not null) ROW_FORMAT=DYNAMIC, engine = innodb;
|
||||
|
||||
# Length exceeds maximum supported key length, will auto-truncated to 3072
|
||||
create index idx on worklog5743(a(3073));
|
||||
|
||||
create index idx2 on worklog5743(a(3072));
|
||||
|
||||
show create table worklog5743;
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
# We have a limit of 767 bytes for Antelope table
|
||||
create table worklog5743(a TEXT not null) engine = innodb;
|
||||
|
||||
-- error ER_INDEX_COLUMN_TOO_LONG
|
||||
create index idx on worklog5743(a(768));
|
||||
|
||||
create index idx2 on worklog5743(a(767));
|
||||
|
||||
drop table worklog5743;
|
||||
|
||||
eval SET GLOBAL innodb_file_format=$innodb_file_format_orig;
|
||||
eval SET GLOBAL innodb_file_per_table=$innodb_file_per_table_orig;
|
||||
eval SET GLOBAL innodb_file_format_max=$innodb_file_format_max_orig;
|
||||
eval SET GLOBAL innodb_large_prefix=$innodb_large_prefix_orig;
|
||||
Reference in New Issue
Block a user