mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
Create 'main' test directory and move 't' and 'r' there
This commit is contained in:
Michael Widenius
401
mysql-test/main/fast_prefix_index_fetch_innodb.result
Normal file
401
mysql-test/main/fast_prefix_index_fetch_innodb.result
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@ -0,0 +1,401 @@
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drop table if exists prefixinno;
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set global innodb_prefix_index_cluster_optimization = ON;
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show variables like 'innodb_prefix_index_cluster_optimization';
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Variable_name Value
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innodb_prefix_index_cluster_optimization ON
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# Create a table with a large varchar field that we index the prefix
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# of and ensure we only trigger cluster lookups when we expect it.
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create table prefixinno (
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id int not null,
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fake_id int not null,
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bigfield varchar(4096),
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primary key(id),
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index bigfield_idx (bigfield(32)),
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index fake_id_bigfield_prefix (fake_id, bigfield(32))
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) engine=innodb;
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insert into prefixinno values (1, 1001, repeat('a', 1)),
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(8, 1008, repeat('b', 8)),
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(24, 1024, repeat('c', 24)),
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(31, 1031, repeat('d', 31)),
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(32, 1032, repeat('x', 32)),
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(33, 1033, repeat('y', 33)),
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(128, 1128, repeat('z', 128));
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select * from prefixinno;
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id fake_id bigfield
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1 1001 a
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8 1008 bbbbbbbb
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24 1024 cccccccccccccccccccccccc
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31 1031 ddddddddddddddddddddddddddddddd
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32 1032 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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33 1033 yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
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128 1128 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
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# Baseline sanity check: 0, 0.
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select "no-op query";
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no-op query
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no-op query
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible for optimization.
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select id, bigfield from prefixinno where bigfield = repeat('d', 31);
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id bigfield
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31 ddddddddddddddddddddddddddddddd
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Eligible for optimization, access via fake_id only.
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select id, bigfield from prefixinno where fake_id = 1031;
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id bigfield
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31 ddddddddddddddddddddddddddddddd
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible for optimization, access via fake_id of big row.
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select id, bigfield from prefixinno where fake_id = 1033;
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id bigfield
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33 yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible for optimization.
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select id, bigfield from prefixinno where bigfield = repeat('x', 32);
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id bigfield
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32 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible for optimization.
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select id, bigfield from prefixinno where bigfield = repeat('y', 33);
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id bigfield
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33 yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible, should not increment lookup counter.
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select id, bigfield from prefixinno where bigfield = repeat('b', 8);
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id bigfield
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8 bbbbbbbb
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Eligible, should not increment lookup counter.
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select id, bigfield from prefixinno where bigfield = repeat('c', 24);
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id bigfield
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24 cccccccccccccccccccccccc
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Should increment lookup counter.
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select id, bigfield from prefixinno where bigfield = repeat('z', 128);
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id bigfield
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128 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Disable optimization, confirm we still increment counter.
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set global innodb_prefix_index_cluster_optimization = OFF;
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select id, bigfield from prefixinno where fake_id = 1033;
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id bigfield
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33 yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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drop table prefixinno;
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# Multi-byte handling case
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set global innodb_prefix_index_cluster_optimization = ON;
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SET NAMES utf8mb4;
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CREATE TABLE t1(
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f1 varchar(10) CHARACTER SET UTF8MB4 COLLATE UTF8MB4_BIN,
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INDEX (f1(3)))ENGINE=INNODB;
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INSERT INTO t1 VALUES('a'), ('cccc'), ('až'), ('cčc'), ('ggᵷg'), ('¢¢');
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INSERT INTO t1 VALUES('தமிழ்'), ('🐱🌑'), ('🌒'), ('🌑');
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INSERT INTO t1 VALUES('😊me'), ('eu€'), ('ls¢');
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# Eligible - record length is shorter than prefix
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'a';
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f1
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a
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like 'c%';
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f1
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cccc
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cčc
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select @cluster_lookups;
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@cluster_lookups
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3
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'až';
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f1
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až
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'தமிழ்';
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f1
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தமிழ்
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like 'ggᵷ%';
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f1
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ggᵷg
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '😊%';
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f1
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😊me
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'ls¢';
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f1
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ls¢
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '¢¢%';
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f1
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¢¢
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🐱🌑%';
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f1
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🐱🌑
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🌑%';
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f1
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🌑
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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2
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🌒%';
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f1
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🌒
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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2
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DROP TABLE t1;
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# Multi-byte with minimum character length > 1 bytes
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CREATE TABLE t1(
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f1 varchar(10) CHARACTER SET UTF16 COLLATE UTF16_BIN,
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INDEX (f1(3)))ENGINE=INNODB;
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INSERT INTO t1 VALUES('a'), ('cccc'), ('až'), ('cčc'), ('ggᵷg'), ('¢¢');
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INSERT INTO t1 VALUES('தமிழ்'), ('🐱🌑'), ('🌒'), ('🌑');
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INSERT INTO t1 VALUES('😊me'), ('eu€'), ('ls¢');
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# Eligible - record length is shorter than prefix
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'a';
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f1
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a
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like 'c%';
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f1
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cccc
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cčc
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select @cluster_lookups;
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@cluster_lookups
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3
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'až';
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f1
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až
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'தமிழ்';
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f1
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தமிழ்
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like 'ggᵷ%';
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f1
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ggᵷg
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select @cluster_lookups;
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@cluster_lookups
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2
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '😊%';
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f1
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😊me
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Not eligible - record length longer than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 = 'ls¢';
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f1
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ls¢
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX(`f1`) WHERE f1 like '¢¢%';
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f1
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¢¢
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Eligible - record length shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🐱🌑%';
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f1
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🐱🌑
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select @cluster_lookups;
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@cluster_lookups
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2
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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0
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# Eligible - record length is shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🌑%';
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f1
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🌑
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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2
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# Eligible - record length is shorter than prefix length
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SELECT f1 FROM t1 FORCE INDEX (`f1`) WHERE f1 like '🌒%';
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f1
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🌒
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select @cluster_lookups;
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@cluster_lookups
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1
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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DROP TABLE t1;
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CREATE TABLE t1(
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col1 INT,
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col2 BLOB DEFAULT NULL,
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INDEX `idx1`(col2(4), col1))ENGINE=INNODB;
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INSERT INTO t1 VALUES (2, 'test'), (3, repeat('test1', 2000));
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INSERT INTO t1(col1) VALUES(1);
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# Eligible - record length is shorter than prefix length
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SELECT col1 FROM t1 FORCE INDEX (`idx1`) WHERE col2 is NULL;
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col1
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1
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select @cluster_lookups;
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@cluster_lookups
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0
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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1
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# Not eligible - record length longer than prefix index
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SELECT col1 FROM t1 FORCE INDEX (`idx1`) WHERE col2 like 'test1%';
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col1
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3
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select @cluster_lookups;
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@cluster_lookups
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2
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select @cluster_lookups_avoided;
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@cluster_lookups_avoided
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||||
0
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DROP TABLE t1;
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set global innodb_prefix_index_cluster_optimization = OFF;
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||||
Reference in New Issue
Block a user