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#
# Check null keys
--disable_warnings
drop table if exists t1,t2;
--enable_warnings
create table t1 (a int, b int not null,unique key (a,b),index(b)) engine=myisam;
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);
explain select * from t1 where a is null;
explain select * from t1 where a is null and b = 2;
explain select * from t1 where a is null and b = 7;
explain select * from t1 where a=2 and b = 2;
explain select * from t1 where a<=>b limit 2;
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
explain select * from t1 where (a is null or a = 7) and b=7;
explain select * from t1 where (a is null or a = 7) and b=7 order by a;
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
explain select * from t1 where a > 1 and a < 3 limit 1;
explain select * from t1 where a > 8 and a < 9;
select * from t1 where a is null;
select * from t1 where a is null and b = 7;
select * from t1 where a<=>b limit 2;
select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
select * from t1 where (a is null or a = 7) and b=7;
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
select * from t1 where a > 1 and a < 3 limit 1;
select * from t1 where a > 8 and a < 9;
create table t2 like t1;
insert into t2 select * from t1;
alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10));
explain select * from t1 where a is null and b = 2;
explain select * from t1 where a is null and b = 2 and c=0;
explain select * from t1 where a is null and b = 7 and c=0;
explain select * from t1 where a=2 and b = 2;
explain select * from t1 where a<=>b limit 2;
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;
explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
explain select * from t1 where a > 1 and a < 3 limit 1;
explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;
explain select * from t1 where a > 8 and a < 9;
explain select * from t1 where b like "6%";
select * from t1 where a is null;
select * from t1 where a is null and b = 7 and c=0;
select * from t1 where a<=>b limit 2;
select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
select * from t1 where (a is null or a > 0 and a < 3) and b > 7 limit 3;
select * from t1 where (a is null or a = 7) and b=7 and c=0;
select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
select * from t1 where b like "6%";
#
# Test ref_or_null optimization
#
drop table t1;
rename table t2 to t1;
alter table t1 modify b int null;
insert into t1 values (7,null), (8,null), (8,7);
explain select * from t1 where a = 7 and (b=7 or b is null);
select * from t1 where a = 7 and (b=7 or b is null);
explain select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
select * from t1 where (a = 7 or a is null) and (b=7 or b is null);
explain select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
select * from t1 where (a = 7 or a is null) and (a = 7 or a is null);
create table t2 (a int);
insert into t2 values (7),(8);
explain select * from t2 straight_join t1 where t1.a=t2.a and b is null;
drop index b on t1;
explain select * from t2,t1 where t1.a=t2.a and b is null;
select * from t2,t1 where t1.a=t2.a and b is null;
explain select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
select * from t2,t1 where t1.a=t2.a and (b= 7 or b is null);
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and b= 7;
explain select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
select * from t2,t1 where (t1.a=t2.a or t1.a is null) and (b= 7 or b is null);
insert into t2 values (null),(6);
delete from t1 where a=8;
explain select * from t2,t1 where t1.a=t2.a or t1.a is null;
explain select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
select * from t2,t1 where t1.a<=>t2.a or (t1.a is null and t1.b <> 9);
drop table t1,t2;
#
# The following failed for Matt Loschert
#
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
uniq_id int(10) unsigned default NULL,
PRIMARY KEY (id),
UNIQUE KEY idx1 (uniq_id)
) ENGINE=MyISAM;
CREATE TABLE t2 (
id int(10) unsigned NOT NULL auto_increment,
uniq_id int(10) unsigned default NULL,
PRIMARY KEY (id)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
#
# Check IS NULL optimization
#
explain select id from t1 where uniq_id is null;
explain select id from t1 where uniq_id =1;
#
# Check updates
#
UPDATE t1 SET id=id+100 where uniq_id is null;
UPDATE t2 SET id=id+100 where uniq_id is null;
select id from t1 where uniq_id is null;
select id from t2 where uniq_id is null;
#
# Delete all records from each table where the uniq_id field is null
#
DELETE FROM t1 WHERE uniq_id IS NULL;
DELETE FROM t2 WHERE uniq_id IS NULL;
#
# Select what is left -- notice the difference
#
SELECT * FROM t1 ORDER BY uniq_id, id;
SELECT * FROM t2 ORDER BY uniq_id, id;
DROP table t1,t2;
#
# This crashed MySQL 3.23.47
#
CREATE TABLE `t1` (
`order_id` char(32) NOT NULL default '',
`product_id` char(32) NOT NULL default '',
`product_type` int(11) NOT NULL default '0',
PRIMARY KEY (`order_id`,`product_id`,`product_type`)
) ENGINE=MyISAM;
CREATE TABLE `t2` (
`order_id` char(32) NOT NULL default '',
`product_id` char(32) NOT NULL default '',
`product_type` int(11) NOT NULL default '0',
PRIMARY KEY (`order_id`,`product_id`,`product_type`)
) ENGINE=MyISAM;
INSERT INTO t1 (order_id, product_id, product_type) VALUES
('3d7ce39b5d4b3e3d22aaafe9b633de51',1206029, 3),
('3d7ce39b5d4b3e3d22aaafe9b633de51',5880836, 3),
('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);
INSERT INTO t2 (order_id, product_id, product_type) VALUES
('9d9aad7764b5b2c53004348ef8d34500',2315652, 3);
select t1.* from t1
left join t2 using(order_id, product_id, product_type)
where t2.order_id=NULL;
select t1.* from t1
left join t2 using(order_id, product_id, product_type)
where t2.order_id is NULL;
drop table t1,t2;
#
# The last select returned wrong results in 3.23.52
#
create table t1 (id int);
insert into t1 values (null), (0);
create table t2 (id int);
insert into t2 values (null);
select * from t1, t2 where t1.id = t2.id;
alter table t1 add key id (id);
select * from t1, t2 where t1.id = t2.id;
drop table t1,t2;
#
# Check bug when doing <=> NULL on an indexed null field
#
create table t1 (
id integer,
id2 integer not null,
index (id),
index (id2)
);
insert ignore into t1 values(null,null),(1,1);
select * from t1;
select * from t1 where id <=> null;
select * from t1 where id <=> null or id > 0;
select * from t1 where id is null or id > 0;
select * from t1 where id2 <=> null or id2 > 0;
select * from t1 where id2 is null or id2 > 0;
delete from t1 where id <=> NULL;
select * from t1;
drop table t1;
#
# Test for bug #12144: optimizations for key access with null keys
# used for outer joins
#
CREATE TABLE t1 (a int);
CREATE TABLE t2 (a int, b int, INDEX idx(a));
CREATE TABLE t3 (b int, INDEX idx(b));
CREATE TABLE t4 (b int, INDEX idx(b));
INSERT INTO t1 VALUES (1), (2), (3), (4);
INSERT INTO t2 VALUES (1, 1), (3, 1);
INSERT INTO t3 VALUES
(NULL), (NULL), (NULL), (NULL), (NULL),
(NULL), (NULL), (NULL), (NULL), (NULL);
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t4;
INSERT INTO t3 VALUES (2), (3);
ANALYZE table t1, t2, t3;
SELECT COUNT(*) FROM t3;
EXPLAIN SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
LEFT JOIN t3 ON t2.b=t3.b;
FLUSH STATUS ;
SELECT SQL_CALC_FOUND_ROWS * FROM t1 LEFT JOIN t2 ON t1.a=t2.a
LEFT JOIN t3 ON t2.b=t3.b;
SELECT FOUND_ROWS();
SHOW STATUS LIKE "handler_read%";
DROP TABLE t1,t2,t3,t4;
# End of 4.1 tests
#
# BUG#34945 "ref_or_null queries that are null_rejecting and have a null value crash mysql"
#
CREATE TABLE t1 (
a int(11) default NULL,
b int(11) default NULL,
KEY a (a,b)
);
INSERT INTO t1 VALUES (0,10),(0,11),(0,12);
CREATE TABLE t2 (
a int(11) default NULL,
b int(11) default NULL,
KEY a (a)
);
INSERT INTO t2 VALUES (3,NULL),(3,11),(3,12);
SELECT * FROM t2 inner join t1 WHERE ( t1.a = 0 OR t1.a IS NULL) AND t2.a = 3 AND t2.b = t1.b;
drop table t1, t2;
-- echo End of 5.0 tests
--echo #
--echo # BUG#727667 Wrong result with OR + NOT NULL in maria-5.3
--echo #
CREATE TABLE t1 (
f3 int(11),
f10 varchar(1),
KEY (f3)
);
INSERT INTO t1 VALUES ('9','k'),(NULL,'r');
SELECT * FROM t1 WHERE (f3 = 83) OR (f10 = 'z' AND f3 IS NULL);
DROP TABLE t1;
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