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95 lines
2.6 KiB
Text
95 lines
2.6 KiB
Text
--source include/have_innodb.inc
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--source include/have_sequence.inc
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SET @save_stats_persistent=@@GLOBAL.innodb_stats_persistent;
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SET GLOBAL innodb_stats_persistent=OFF;
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--echo #
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--echo # MDEV-6402: Optimizer doesn't choose best execution plan when composite key is used
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--echo #
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CREATE TABLE t2 (
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pk1 int(11) NOT NULL,
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pk2 int(11) NOT NULL,
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fd5 bigint(20) DEFAULT NULL,
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filler1 char(200),
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filler2 char(200),
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PRIMARY KEY (pk1,pk2),
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UNIQUE KEY ux_pk1_fd5 (pk1,fd5)
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) ENGINE=InnoDB;
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insert into t2
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select
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round(log(2,seq+1)),
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seq,
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seq,
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REPEAT('filler-data-', 10),
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REPEAT('filler-data-', 10)
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from
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seq_0_to_1999;
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analyze table t2 persistent for all;
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select pk1, count(*) from t2 group by pk1;
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--echo # The following should use range(ux_pk1_fd5), two key parts (key_len=5+8=13)
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EXPLAIN SELECT * FROM t2 USE INDEX(ux_pk1_fd5) WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
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--echo # This also must use range, not ref. key_len must be 13
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EXPLAIN SELECT * FROM t2 WHERE pk1=9 AND fd5 < 500 ORDER BY fd5 DESC LIMIT 10;
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drop table t2;
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--echo #
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--echo # MDEV-6814: Server crashes in calculate_key_len on query with ORDER BY
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--echo #
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CREATE TABLE t1 (f1 INT, f2 INT, f3 INT, KEY(f2),KEY(f2,f1)) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1,5,0),(2,6,0);
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SELECT * FROM t1 WHERE f1 < 3 AND f2 IS NULL ORDER BY f1;
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DROP TABLE t1;
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--echo #
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--echo # MDEV-6796: Unable to skip filesort when using implicit extended key
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--echo #
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CREATE TABLE t1 (
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pk1 int(11) NOT NULL,
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pk2 varchar(64) NOT NULL,
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col1 varchar(16) DEFAULT NULL,
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PRIMARY KEY (pk1,pk2),
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KEY key1 (pk1,col1)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8;
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CREATE TABLE t2 (
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pk1 int(11) NOT NULL,
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pk2 varchar(64) NOT NULL,
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col1 varchar(16) DEFAULT NULL,
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PRIMARY KEY (pk1,pk2),
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KEY key1 (pk1,col1,pk2)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8;
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INSERT INTO `t1` VALUES
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(12321321,'a8f5f167f44f4964e6c998dee827110c','video'),
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(12321321,'d77a17a3659ffa60c54e0ea17b6c6d16','video'),
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(12321321,'wwafdsafdsafads','video'),
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(12321321,'696aa249f0738e8181957dd57c2d7d0b','video-2014-09-23'),
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(12321321,'802f9f29584b486f356693e3aa4ef0af','video=sdsd'),
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(12321321,'2f94543ff74aab82e9a058b4e8316d75','video=sdsdsds'),
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(12321321,'c1316b9df0d203fd1b9035308de52a0a','video=sdsdsdsdsd');
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insert into t2 select * from t1;
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--echo # this must not use filesort:
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explain SELECT pk2
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FROM t1 USE INDEX(key1)
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WHERE pk1 = 123
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AND col1 = 'video'
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ORDER BY pk2 DESC LIMIT 21;
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--echo # this must not use filesort, either:
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explain SELECT pk2
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FROM t2 USE INDEX(key1)
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WHERE pk1 = 123 AND col1 = 'video'
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ORDER BY pk2 DESC LIMIT 21;
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drop table t1, t2;
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SET GLOBAL innodb_stats_persistent=@save_stats_persistent;
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