313 lines
10 KiB
SQL
313 lines
10 KiB
SQL
#
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# Check null keys
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--disable_warnings
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drop table if exists t1,t2;
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--enable_warnings
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SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
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create table t1 (a int, b int not null,unique key (a,b),index(b));
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insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);
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analyze table t1;
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explain select * from t1 where a is null;
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explain select * from t1 where a is null and b = 2;
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explain select * from t1 where a is null and b = 7;
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explain select * from t1 where a=2 and b = 2;
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explain select * from t1 where a<=>b limit 2;
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explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
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explain format=tree select * from t1 where (a is null or a = 7) and b=7;
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explain select * from t1 where (a is null or a = 7) and b=7;
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explain select * from t1 where (a is null or a = 7) and b=7 order by a;
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explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
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explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
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explain select * from t1 where a > 1 and a < 3 limit 1;
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explain select * from t1 where a > 8 and a < 9;
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select * from t1 where a is null;
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select * from t1 where a is null and b = 7;
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select * from t1 where a<=>b limit 2;
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select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
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select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
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select * from t1 where (a is null or a = 7) and b=7;
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select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
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select * from t1 where a > 1 and a < 3 limit 1;
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select * from t1 where a > 8 and a < 9;
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create table t2 like t1;
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insert into t2 select * from t1;
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alter table t1
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modify b blob not null,
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add c int not null,
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drop key a,
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add unique key (a,b(20),c),
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drop key b,
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add key (b(10));
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analyze table t1, t2;
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explain select * from t1 where a is null and b = 2;
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explain select * from t1 where a is null and b = 2 and c=0;
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explain select * from t1 where a is null and b = 7 and c=0;
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explain select * from t1 where a=2 and b = 2;
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explain select * from t1 where a<=>b limit 2;
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explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;
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explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
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explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
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explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
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explain select * from t1 where a > 1 and a < 3 limit 1;
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explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;
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explain select * from t1 where a > 8 and a < 9;
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explain select * from t1 where b like "6%";
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select * from t1 where a is null;
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select * from t1 where a is null and b = 7 and c=0;
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select * from t1 where a<=>b limit 2;
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select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
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select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
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select * from t1 where (a is null or a = 7) and b=7 and c=0;
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select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
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select * from t1 where b like "6%";
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#
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# Test ref_or_null optimization
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#
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drop table t1;
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rename table t2 to t1;
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alter table t1 modify b int null;
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insert into t1 values (7,null), (8,null), (8,7);
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analyze table t1;
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explain select * from t1 where a = 7 and (b=7 or b is null);
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select * from t1 where a = 7 and (b=7 or b is null);
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explain select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
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select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
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explain select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
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select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
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create table t2 (a int);
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insert into t2 values (7),(8);
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analyze table t2;
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explain select * from t2 straight_join t1 where t1.a=t2.a and b is null;
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drop index b on t1;
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analyze table t1;
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--replace_column 10 #
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explain select * from t2,t1 where t1.a=t2.a and b is null;
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select * from t2,t1 where t1.a=t2.a and b is null;
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--replace_column 10 #
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explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
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select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
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--replace_column 10 #
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explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
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select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
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--replace_column 10 # 11 #
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explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
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select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
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insert into t2 values (null),(6);
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delete from t1 where a=8;
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analyze table t1, t2;
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--replace_column 10 #
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explain select * from t2,t1 where t1.a=t2.a or t1.a is null;
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--replace_column 10 #
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explain select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
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select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
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drop table t1,t2;
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#
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# The following failed for Matt Loschert
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#
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CREATE TABLE t1 (
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id int(10) unsigned NOT NULL auto_increment,
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uniq_id int(10) unsigned default NULL,
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PRIMARY KEY (id),
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UNIQUE KEY idx1 (uniq_id)
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);
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CREATE TABLE t2 (
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id int(10) unsigned NOT NULL auto_increment,
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uniq_id int(10) unsigned default NULL,
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PRIMARY KEY (id)
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);
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INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
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INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
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ANALYZE TABLE t1, t2;
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#
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# Check IS NULL optimization
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#
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explain select id from t1 where uniq_id is null;
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explain select id from t1 where uniq_id =1;
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#
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# Check updates
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#
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UPDATE t1 SET id=id+100 where uniq_id is null;
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UPDATE t2 SET id=id+100 where uniq_id is null;
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select id from t1 where uniq_id is null;
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select id from t2 where uniq_id is null;
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#
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# Delete all records from each table where the uniq_id field is null
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#
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DELETE FROM t1 WHERE uniq_id IS NULL;
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DELETE FROM t2 WHERE uniq_id IS NULL;
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#
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# Select what is left -- notice the difference
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#
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SELECT * FROM t1 ORDER BY uniq_id, id;
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SELECT * FROM t2 ORDER BY uniq_id, id;
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DROP table t1,t2;
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#
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# This crashed MySQL 3.23.47
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#
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CREATE TABLE `t1` (
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`order_id` char(32) NOT NULL default '',
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`product_id` char(32) NOT NULL default '',
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`product_type` int(11) NOT NULL default '0',
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PRIMARY KEY (`order_id`,`product_id`,`product_type`)
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);
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CREATE TABLE `t2` (
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`order_id` char(32) NOT NULL default '',
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`product_id` char(32) NOT NULL default '',
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`product_type` int(11) NOT NULL default '0',
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PRIMARY KEY (`order_id`,`product_id`,`product_type`)
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);
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INSERT INTO t1 (order_id, product_id, product_type) VALUES
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('3d7ce39b5d4b3e3d22aaafe9b633de51',1206029, 3),
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('3d7ce39b5d4b3e3d22aaafe9b633de51',5880836, 3),
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('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);
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INSERT INTO t2 (order_id, product_id, product_type) VALUES
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('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);
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select t1.* from t1
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left join t2 using(order_id, product_id, product_type)
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where t2.order_id=NULL;
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select t1.* from t1
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left join t2 using(order_id, product_id, product_type)
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where t2.order_id is NULL;
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drop table t1,t2;
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#
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# The last select returned wrong results in 3.23.52
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#
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create table t1 (id int);
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insert into t1 values (null), (0);
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create table t2 (id int);
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insert into t2 values (null);
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select * from t1, t2 where t1.id = t2.id;
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alter table t1 add key id (id);
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select * from t1, t2 where t1.id = t2.id;
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drop table t1,t2;
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#
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# Check bug when doing <=> NULL on an indexed null field
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#
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create table t1 (
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id integer,
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id2 integer not null,
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index (id),
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index (id2)
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);
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insert into t1 values(null,null),(1,1);
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select * from t1;
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select * from t1 where id <=> null;
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select * from t1 where id <=> null or id > 0;
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select * from t1 where id is null or id > 0;
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select * from t1 where id2 <=> null or id2 > 0;
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select * from t1 where id2 is null or id2 > 0;
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delete from t1 where id <=> NULL;
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select * from t1;
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drop table t1;
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#
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# Test for bug #12144: optimizations for key access with null keys
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# used for outer joins
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#
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CREATE TABLE t1 (a int);
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CREATE TABLE t2 (a int, b int, INDEX idx(a));
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CREATE TABLE t3 (b int, INDEX idx(b));
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CREATE TABLE t4 (b int, INDEX idx(b));
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INSERT INTO t1 VALUES (1), (2), (3), (4);
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INSERT INTO t2 VALUES (1, 1), (3, 1);
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INSERT INTO t3 VALUES
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(NULL), (NULL), (NULL), (NULL), (NULL),
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(NULL), (NULL), (NULL), (NULL), (NULL);
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t4 SELECT * FROM t3;
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INSERT INTO t3 SELECT * FROM t4;
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INSERT INTO t3 VALUES (2), (3);
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ANALYZE table t1, t2, t3;
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SELECT COUNT(*) FROM t3;
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--replace_column 10 #
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EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
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LEFT JOIN t3 ON t2.b=t3.b;
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FLUSH STATUS ;
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--replace_column 10 #
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SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
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LEFT JOIN t3 ON t2.b=t3.b;
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SELECT FOUND_ROWS();
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SHOW STATUS LIKE "handler_read%";
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DROP TABLE t1,t2,t3,t4;
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# End of 4.1 tests
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#
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# BUG#34945 "ref_or_null queries that are null_rejecting and have a null value crash mysql"
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#
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CREATE TABLE t1 (
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a int(11) default NULL,
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b int(11) default NULL,
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KEY a (a,b)
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);
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INSERT INTO t1 VALUES (0,10),(0,11),(0,12);
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CREATE TABLE t2 (
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a int(11) default NULL,
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b int(11) default NULL,
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KEY a (a)
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);
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INSERT INTO t2 VALUES (3,NULL),(3,11),(3,12);
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SELECT * FROM t2 inner join t1 WHERE ( t1.a = 0 OR t1.a IS NULL) AND t2.a = 3 AND t2.b = t1.b;
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drop table t1, t2;
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-- echo End of 5.0 tests
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--echo #
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--echo # Bug#54608 Query using IN + OR + IS TRUE and IS NULL returns
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--echo # NULL when should be empty
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--echo #
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CREATE TABLE t1 (a INT, KEY (a));
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INSERT INTO t1 VALUES (1), (2), (NULL);
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ANALYZE TABLE t1;
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explain SELECT a FROM t1 WHERE a IN (42) OR (a IS TRUE AND a IS NULL);
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SELECT a FROM t1 WHERE a IN (42) OR (a IS TRUE AND a IS NULL);
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--replace_column 10 #
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explain SELECT a FROM t1 WHERE a IN (42) OR (a=NULL);
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SELECT a FROM t1 WHERE a IN (42) OR (a=NULL);
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drop table t1;
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SET sql_mode = default;
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#
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# Test that EXPLAIN format=tree prints "or NULL" on the keypart that
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# is actually nullable, not always the first one.
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#
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create table t1 (a int, b int not null,unique key (b,a),index(b));
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insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);
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analyze table t1;
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explain format=tree select * from t1 where (a is null or a = 7) and b=7;
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drop table t1;
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