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267 lines
8.4 KiB
Text
267 lines
8.4 KiB
Text
# Testcase for worklog #5743: Lift the limit of index key prefixes
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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`;
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let $innodb_large_prefix_orig=`select @@innodb_large_prefix`;
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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 a table of DYNAMIC format, with a primary index of 1000 bytes in
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# size
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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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# Do some insertion and update to excercise the external cache
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# code path
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insert into worklog5743 values(repeat("a", 20000));
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# default session, update the table
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update worklog5743 set a = (repeat("b", 16000));
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# Create a secondary index
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create index idx on worklog5743(a(2000));
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# Start a few sessions to do selections on table being updated in default
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# session, so it would rebuild the previous version from undo log.
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# 1) Default session: Initiate an update on the externally stored column
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# 2) Session con1: Select from table with repeated read
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# 3) Session con2: Select from table with read uncommitted
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# 4) Default session: rollback updates
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begin;
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update worklog5743 set a = (repeat("x", 17000));
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# Start a new session to select the column to force it build
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# an earlier version of the clustered index through undo log. So it should
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# just see the result of repeat("b", 16000)
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select @@session.tx_isolation;
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--connect (con1,localhost,root,,)
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select a = repeat("x", 17000) from worklog5743;
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select a = repeat("b", 16000) from worklog5743;
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# Start another session doing "read uncommitted" query, it
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# should see the uncommitted update
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--connect (con2,localhost,root,,)
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a = repeat("x", 17000) from worklog5743;
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# Roll back the transaction
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--connection default
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rollback;
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drop table worklog5743;
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# Create a table with only a secondary index has large prefix column
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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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# Do a select from another connection that would use the secondary index
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--connection con1
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select @@session.tx_isolation;
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explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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# Do read uncommitted in another session, it would show there is no
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# row with a1 = 9
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--connection con2
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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--connection default
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rollback;
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drop table worklog5743;
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# Create a table with a secondary index has small (50 bytes) prefix column
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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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# Do a select from another connection that would use the secondary index
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--connection con1
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select @@session.tx_isolation;
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explain select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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# Do read uncommitted in another session, it would show there is no
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# row with a1 = 9
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--connection con2
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a1, a2 = repeat("a", 10000) from worklog5743 where a1 = 9;
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--connection default
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rollback;
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drop table worklog5743;
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# Create a table of ROW_FORMAT=COMPRESSED format
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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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# The maximum overall index record (not prefix) length for this table
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# is page_zip_empty_size() / 2, which is 960. "Too big row" error (
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# HA_ERR_TO_BIG_ROW) will be printed if this limit is exceeded.
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# Considering other fields and their overhead, the maximum length
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# for column a2 is 940 or 941 depending on the zlib version used and
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# compressBound() value used in page_zip_empty_size() (please refer
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# to Bug #47495 for more detail).
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-- error 139
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create index idx1 on worklog5743_2(a1, a2(942));
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create index idx1 on worklog5743_2(a1, a2(940));
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# similarly, the maximum index record length for the table is
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# 1984. Considering other fields and their overhead, the
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# maximum length for column a2 is 1964 or 1965 (please refer
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# to Bug #47495 for more detail).
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-- error 139
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create index idx1 on worklog5743_4(a1, a2(1966));
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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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# Do a select from another connection that would use the secondary index
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--connection con1
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select @@session.tx_isolation;
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explain select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
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# Do read uncommitted in another session, it would show there is no
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# row with a1 = 9
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--connection con2
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a1, a2 = repeat("a", 10000) from worklog5743_2 where a1 = 9;
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select a1, a2 = repeat("a", 10000) from worklog5743_4 where a1 = 9;
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--connection default
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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 a table with varchar column, and create index directly on this
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# large column (without prefix)
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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 an index with large column without prefix
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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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# Do a select from another connection that would use the secondary index
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--connection con1
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select @@session.tx_isolation;
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explain select a1 from worklog5743 where a1 = 9;
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select a1 from worklog5743 where a1 = 9;
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# Do read uncommitted, it would show there is no row with a1 = 9
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--connection con2
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a1 from worklog5743 where a1 = 9;
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--connection default
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rollback;
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drop table worklog5743;
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# Create a table with old format, and the limit is 768 bytes.
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-- error ER_INDEX_COLUMN_TOO_LONG
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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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create table worklog5743(a TEXT) engine = innodb;
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# Excercise the column length check in ha_innobase::add_index()
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-- error ER_INDEX_COLUMN_TOO_LONG
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create index idx on worklog5743(a(1000));
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# This should be successful
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create index idx on worklog5743(a(725));
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# Perform some DMLs
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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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# Start a new session to select the table to force it build
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# an earlier version of the cluster index through undo log
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select @@session.tx_isolation;
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--connection con1
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select a = repeat("a", 20000) from worklog5743;
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--connection con2
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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select @@session.tx_isolation;
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select a = repeat("x", 25000) from worklog5743;
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--connection default
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rollback;
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drop table worklog5743;
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# Some border line test on the column length.
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# We have a limit of 3072 bytes for Barracuda table
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create table worklog5743(a TEXT not null) ROW_FORMAT=DYNAMIC, engine = innodb;
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# Length exceeds maximum supported key length, will auto-truncated to 3072
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create index idx on worklog5743(a(3073));
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create index idx2 on worklog5743(a(3072));
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show create table worklog5743;
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drop table worklog5743;
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# We have a limit of 767 bytes for Antelope table
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create table worklog5743(a TEXT not null) engine = innodb;
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-- error ER_INDEX_COLUMN_TOO_LONG
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create index idx on worklog5743(a(768));
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create index idx2 on worklog5743(a(767));
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drop table worklog5743;
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eval SET GLOBAL innodb_file_format=$innodb_file_format_orig;
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eval SET GLOBAL innodb_file_per_table=$innodb_file_per_table_orig;
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eval SET GLOBAL innodb_large_prefix=$innodb_large_prefix_orig;
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