~drizzle-trunk/drizzle/development : contents of mysql-test/r/heap

~drizzle-trunk/drizzle/development : (revision 1)

drop table if exists t1,t2;
create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
insert into t1 values(1,1),(2,2),(3,3),(4,4);
delete from t1 where a=1 or a=0;
show keys from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_Comment
t1	0	PRIMARY	1	a	NULL	3	NULL	NULL		HASH		
select * from t1;
a	b
2	2
3	3
4	4
select * from t1 where a=4;
a	b
4	4
update t1 set b=5 where a=4;
update t1 set b=b+1 where a>=3;
replace t1 values (3,3);
select * from t1;
a	b
2	2
3	3
4	6
alter table t1 add c int not null, add key using HASH (c,a);
drop table t1;
create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
insert into t1 values(1,1),(2,2),(3,3),(4,4);
delete from t1 where a > 0;
select * from t1;
a	b
drop table t1;
create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
insert into t1 values(1,1),(2,2),(3,3),(4,4);
alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
select * from t1;
a	b
1	1
2	2
3	3
4	4
drop table t1;
create table t1 (a int not null) engine=heap;
insert into t1 values (869751),(736494),(226312),(802616),(728912);
select * from t1 where a > 736494;
a
869751
802616
alter table t1 add unique uniq_id using HASH (a);
select * from t1 where a > 736494;
a
869751
802616
select * from t1 where a = 736494;
a
736494
select * from t1 where a=869751 or a=736494;
a
736494
869751
select * from t1 where a in (869751,736494,226312,802616);
a
226312
736494
802616
869751
alter table t1 engine=myisam;
explain select * from t1 where a in (869751,736494,226312,802616);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	uniq_id	uniq_id	4	NULL	4	Using where; Using index
drop table t1;
create table t1 (x int not null, y int not null, key x  using HASH (x), unique y  using HASH (y))
engine=heap;
insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
select * from t1 where x=1;
x	y
1	3
1	1
select * from t1,t1 as t2 where t1.x=t2.y;
x	y	x	y
1	1	1	1
2	2	2	2
1	3	1	1
2	4	2	2
2	5	2	2
2	6	2	2
explain select * from t1,t1 as t2 where t1.x=t2.y;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	x	NULL	NULL	NULL	6	
1	SIMPLE	t2	eq_ref	y	y	4	test.t1.x	1	
drop table t1;
create table t1 (a int) engine=heap;
insert into t1 values(1);
select max(a) from t1;
max(a)
1
drop table t1;
CREATE TABLE t1 ( a int not null default 0, b int not null default 0,  key  using HASH (a),  key  using HASH (b)  ) ENGINE=HEAP;
insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
select * from t1 where a=1;
a	b
1	6
1	5
1	4
1	3
1	2
1	1
insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
select * from t1 where a=1;
a	b
1	6
1	5
1	4
1	3
1	2
1	1
1	6
1	5
1	4
1	3
1	2
1	1
drop table t1;
create table t1 (id int unsigned not null, primary key  using HASH (id)) engine=HEAP;
insert into t1 values(1);
select max(id) from t1;
max(id)
1
insert into t1 values(2);
select max(id) from t1;
max(id)
2
replace into t1 values(1);
drop table t1;
create table t1 (n int) engine=heap;
drop table t1;
create table t1 (n int) engine=heap;
drop table if exists t1;
CREATE table t1(f1 int not null,f2 char(20) not 
null,index(f2)) engine=heap;
INSERT into t1 set f1=12,f2="bill";
INSERT into t1 set f1=13,f2="bill";
INSERT into t1 set f1=14,f2="bill";
INSERT into t1 set f1=15,f2="bill";
INSERT into t1 set f1=16,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
INSERT into t1 set f1=12,f2="ted";
delete from t1 where f2="bill";
select * from t1;
f1	f2
16	ted
12	ted
12	ted
12	ted
12	ted
drop table t1;
create table t1 (btn char(10) not null, key using HASH (btn)) engine=heap;
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
explain select * from t1 where btn like "q%";
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	14	Using where
select * from t1 where btn like "q%";
btn
alter table t1 add column new_col char(1) not null, add key using HASH (btn,new_col), drop key btn;
update t1 set new_col=left(btn,1);
explain select * from t1 where btn="a";
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	btn	NULL	NULL	NULL	14	Using where
explain select * from t1 where btn="a" and new_col="a";
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	btn	btn	11	const,const	2	Using where
drop table t1;
CREATE TABLE t1 (
a int default NULL,
b int default NULL,
KEY a using HASH (a),
UNIQUE b using HASH (b)
) engine=heap;
INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
SELECT * FROM t1 WHERE a=NULL;
a	b
explain SELECT * FROM t1 WHERE a IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	5	const	2	Using where
SELECT * FROM t1 WHERE a<=>NULL;
a	b
NULL	99
SELECT * FROM t1 WHERE b=NULL;
a	b
explain SELECT * FROM t1 WHERE b IS NULL;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	b	b	5	const	1	Using where
SELECT * FROM t1 WHERE b<=>NULL;
a	b
99	NULL
INSERT INTO t1 VALUES (1,3);
ERROR 23000: Duplicate entry '3' for key 'b'
DROP TABLE t1;
CREATE TABLE t1 (a int not null, primary key using HASH (a)) engine=heap;
INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
DELETE from t1 where a < 100;
SELECT * from t1;
a
DROP TABLE t1;
create table t1
(
a char(8) not null,
b char(20) not null,
c int not null,
key (a)
) engine=heap;
insert into t1 values ('aaaa', 'prefill-hash=5',0);
insert into t1 values ('aaab', 'prefill-hash=0',0);
insert into t1 values ('aaac', 'prefill-hash=7',0);
insert into t1 values ('aaad', 'prefill-hash=2',0);
insert into t1 values ('aaae', 'prefill-hash=1',0);
insert into t1 values ('aaaf', 'prefill-hash=4',0);
insert into t1 values ('aaag', 'prefill-hash=3',0);
insert into t1 values ('aaah', 'prefill-hash=6',0);
explain select * from t1 where a='aaaa';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaab';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaac';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaad';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
insert into t1 select * from t1;
flush tables;
explain select * from t1 where a='aaaa';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaab';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaac';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaad';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
flush tables;
explain select * from t1 where a='aaaa';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaab';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaac';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaad';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
create table t2 as select * from t1;
delete from t1;
insert into t1 select * from t2;
explain select * from t1 where a='aaaa';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaab';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaac';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
explain select * from t1 where a='aaad';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	8	const	2	Using where
drop table t1, t2;
create table t1 (
id int unsigned not null primary key auto_increment, 
name varchar(20) not null,
index heap_idx(name),
index btree_idx using btree(name)
) engine=heap;
create table t2 (
id int unsigned not null primary key auto_increment, 
name varchar(20) not null,
index btree_idx using btree(name),
index heap_idx(name)
) engine=heap;
insert into t1 (name) values ('Matt'), ('Lilu'), ('Corbin'), ('Carly'), 
('Suzy'), ('Hoppy'), ('Burrito'), ('Mimi'), ('Sherry'), ('Ben'), ('Phil'), 
('Emily'), ('Mike');
insert into t2 select * from t1;
explain select * from t1 where name='matt';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx,btree_idx	btree_idx	22	const	1	Using where
explain select * from t2 where name='matt';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	btree_idx,heap_idx	btree_idx	22	const	1	Using where
explain select * from t1 where name='Lilu';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx,btree_idx	btree_idx	22	const	1	Using where
explain select * from t2 where name='Lilu';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	btree_idx,heap_idx	btree_idx	22	const	1	Using where
explain select * from t1 where name='Phil';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx,btree_idx	btree_idx	22	const	1	Using where
explain select * from t2 where name='Phil';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	btree_idx,heap_idx	btree_idx	22	const	1	Using where
explain select * from t1 where name='Lilu';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx,btree_idx	btree_idx	22	const	1	Using where
explain select * from t2 where name='Lilu';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	btree_idx,heap_idx	btree_idx	22	const	1	Using where
insert into t1 (name) select name from t2;
insert into t1 (name) select name from t2;
insert into t1 (name) select name from t2;
insert into t1 (name) select name from t2;
insert into t1 (name) select name from t2;
insert into t1 (name) select name from t2;
flush tables;
select count(*) from t1 where name='Matt';
count(*)
7
explain select * from t1 ignore index (btree_idx) where name='matt';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx	heap_idx	22	const	7	Using where
show index from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_Comment
t1	0	PRIMARY	1	id	NULL	91	NULL	NULL		HASH		
t1	1	heap_idx	1	name	NULL	13	NULL	NULL		HASH		
t1	1	btree_idx	1	name	A	NULL	NULL	NULL		BTREE		
show index from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_Comment
t1	0	PRIMARY	1	id	NULL	91	NULL	NULL		HASH		
t1	1	heap_idx	1	name	NULL	13	NULL	NULL		HASH		
t1	1	btree_idx	1	name	A	NULL	NULL	NULL		BTREE		
create table t3
(
a varchar(20) not null,
b varchar(20) not null,
key (a,b)
) engine=heap;
insert into t3 select name, name from t1;
show index from t3;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_Comment
t3	1	a	1	a	NULL	NULL	NULL	NULL		HASH		
t3	1	a	2	b	NULL	13	NULL	NULL		HASH		
show index from t3;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment	Index_Comment
t3	1	a	1	a	NULL	NULL	NULL	NULL		HASH		
t3	1	a	2	b	NULL	13	NULL	NULL		HASH		
explain select * from t1 ignore key(btree_idx), t3 where t1.name='matt' and t3.a = concat('',t1.name) and t3.b=t1.name;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	heap_idx	heap_idx	22	const	7	Using where
1	SIMPLE	t3	ref	a	a	44	func,const	7	Using where
drop table t1, t2, t3;
create temporary table t1 ( a int, index (a) ) engine=memory;
insert into t1 values (1),(2),(3),(4),(5);
select a from t1 where a in (1,3);
a
1
3
explain select a from t1 where a in (1,3);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	5	NULL	4	Using where
drop table t1;
End of 4.1 tests
CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, 
col2 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, 
UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
INSERT INTO t1 VALUES('A', 'A');
INSERT INTO t1 VALUES('A ', 'A ');
ERROR 23000: Duplicate entry 'A -A ' for key 'key1'
DROP TABLE t1;
CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL, 
col2 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL, 
UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
INSERT INTO t1 VALUES('A', 'A');
INSERT INTO t1 VALUES('A ', 'A ');
ERROR 23000: Duplicate entry 'A -A ' for key 'key1'
DROP TABLE t1;
End of 5.0 tests

1 by brian clean slate	1	drop table if exists t1,t2;
	2	create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
	3	insert into t1 values(1,1),(2,2),(3,3),(4,4);
	4	delete from t1 where a=1 or a=0;
	5	show keys from t1;
	6	Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_Comment
	7	t1 0 PRIMARY 1 a NULL 3 NULL NULL HASH
	8	select * from t1;
	9	a b
	10	2 2
	11	3 3
	12	4 4
	13	select * from t1 where a=4;
	14	a b
	15	4 4
	16	update t1 set b=5 where a=4;
	17	update t1 set b=b+1 where a>=3;
	18	replace t1 values (3,3);
	19	select * from t1;
	20	a b
	21	2 2
	22	3 3
	23	4 6
	24	alter table t1 add c int not null, add key using HASH (c,a);
	25	drop table t1;
	26	create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
	27	insert into t1 values(1,1),(2,2),(3,3),(4,4);
	28	delete from t1 where a > 0;
	29	select * from t1;
	30	a b
	31	drop table t1;
	32	create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
	33	insert into t1 values(1,1),(2,2),(3,3),(4,4);
	34	alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
	35	select * from t1;
	36	a b
	37	1 1
	38	2 2
	39	3 3
	40	4 4
	41	drop table t1;
	42	create table t1 (a int not null) engine=heap;
	43	insert into t1 values (869751),(736494),(226312),(802616),(728912);
	44	select * from t1 where a > 736494;
	45	a
	46	869751
	47	802616
	48	alter table t1 add unique uniq_id using HASH (a);
	49	select * from t1 where a > 736494;
	50	a
	51	869751
	52	802616
	53	select * from t1 where a = 736494;
	54	a
	55	736494
	56	select * from t1 where a=869751 or a=736494;
	57	a
	58	736494
	59	869751
	60	select * from t1 where a in (869751,736494,226312,802616);
	61	a
	62	226312
	63	736494
	64	802616
65	869751
66	alter table t1 engine=myisam;
67	explain select * from t1 where a in (869751,736494,226312,802616);
68	id select_type table type possible_keys key key_len ref rows Extra
69	1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index
70	drop table t1;
71	create table t1 (x int not null, y int not null, key x using HASH (x), unique y using HASH (y))
72	engine=heap;
73	insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
74	select * from t1 where x=1;
75	x y
76	1 3
77	1 1
78	select * from t1,t1 as t2 where t1.x=t2.y;
79	x y x y
80	1 1 1 1
81	2 2 2 2
82	1 3 1 1
83	2 4 2 2
84	2 5 2 2
85	2 6 2 2
86	explain select * from t1,t1 as t2 where t1.x=t2.y;
87	id select_type table type possible_keys key key_len ref rows Extra
88	1 SIMPLE t1 ALL x NULL NULL NULL 6
89	1 SIMPLE t2 eq_ref y y 4 test.t1.x 1
90	drop table t1;
91	create table t1 (a int) engine=heap;
92	insert into t1 values(1);
93	select max(a) from t1;
94	max(a)
95	1
96	drop table t1;
97	CREATE TABLE t1 ( a int not null default 0, b int not null default 0, key using HASH (a), key using HASH (b) ) ENGINE=HEAP;
98	insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
99	select * from t1 where a=1;
100	a b
101	1 6
102	1 5
103	1 4
104	1 3
105	1 2
106	1 1
107	insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
108	select * from t1 where a=1;
109	a b
110	1 6
111	1 5
112	1 4
113	1 3
114	1 2
115	1 1
116	1 6
117	1 5
118	1 4
119	1 3
120	1 2
121	1 1
122	drop table t1;
123	create table t1 (id int unsigned not null, primary key using HASH (id)) engine=HEAP;
124	insert into t1 values(1);
125	select max(id) from t1;
126	max(id)
127	1
128	insert into t1 values(2);
129	select max(id) from t1;
130	max(id)
131	2
132	replace into t1 values(1);
133	drop table t1;
134	create table t1 (n int) engine=heap;
135	drop table t1;
136	create table t1 (n int) engine=heap;
137	drop table if exists t1;
138	CREATE table t1(f1 int not null,f2 char(20) not
139	null,index(f2)) engine=heap;
140	INSERT into t1 set f1=12,f2="bill";
141	INSERT into t1 set f1=13,f2="bill";
142	INSERT into t1 set f1=14,f2="bill";
143	INSERT into t1 set f1=15,f2="bill";
144	INSERT into t1 set f1=16,f2="ted";
145	INSERT into t1 set f1=12,f2="ted";
146	INSERT into t1 set f1=12,f2="ted";
147	INSERT into t1 set f1=12,f2="ted";
148	INSERT into t1 set f1=12,f2="ted";
149	delete from t1 where f2="bill";
150	select * from t1;
151	f1 f2
152	16 ted
153	12 ted
154	12 ted
155	12 ted
156	12 ted
157	drop table t1;
158	create table t1 (btn char(10) not null, key using HASH (btn)) engine=heap;
159	insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
160	explain select * from t1 where btn like "q%";
161	id select_type table type possible_keys key key_len ref rows Extra
162	1 SIMPLE t1 ALL btn NULL NULL NULL 14 Using where
163	select * from t1 where btn like "q%";
164	btn
165	alter table t1 add column new_col char(1) not null, add key using HASH (btn,new_col), drop key btn;
166	update t1 set new_col=left(btn,1);
167	explain select * from t1 where btn="a";
168	id select_type table type possible_keys key key_len ref rows Extra
169	1 SIMPLE t1 ALL btn NULL NULL NULL 14 Using where
170	explain select * from t1 where btn="a" and new_col="a";
171	id select_type table type possible_keys key key_len ref rows Extra
172	1 SIMPLE t1 ref btn btn 11 const,const 2 Using where
173	drop table t1;
174	CREATE TABLE t1 (
175	a int default NULL,
176	b int default NULL,
177	KEY a using HASH (a),
178	UNIQUE b using HASH (b)
179	) engine=heap;
180	INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
181	SELECT * FROM t1 WHERE a=NULL;
182	a b
183	explain SELECT * FROM t1 WHERE a IS NULL;
184	id select_type table type possible_keys key key_len ref rows Extra
185	1 SIMPLE t1 ref a a 5 const 2 Using where
186	SELECT * FROM t1 WHERE a<=>NULL;
187	a b
188	NULL 99
189	SELECT * FROM t1 WHERE b=NULL;
190	a b
191	explain SELECT * FROM t1 WHERE b IS NULL;
192	id select_type table type possible_keys key key_len ref rows Extra
193	1 SIMPLE t1 ref b b 5 const 1 Using where
194	SELECT * FROM t1 WHERE b<=>NULL;
195	a b
196	99 NULL
197	INSERT INTO t1 VALUES (1,3);
198	ERROR 23000: Duplicate entry '3' for key 'b'
199	DROP TABLE t1;
200	CREATE TABLE t1 (a int not null, primary key using HASH (a)) engine=heap;
201	INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
202	DELETE from t1 where a < 100;
203	SELECT * from t1;
204	a
205	DROP TABLE t1;
206	create table t1
207	(
208	a char(8) not null,
209	b char(20) not null,
210	c int not null,
211	key (a)
212	) engine=heap;
213	insert into t1 values ('aaaa', 'prefill-hash=5',0);
214	insert into t1 values ('aaab', 'prefill-hash=0',0);
215	insert into t1 values ('aaac', 'prefill-hash=7',0);
216	insert into t1 values ('aaad', 'prefill-hash=2',0);
217	insert into t1 values ('aaae', 'prefill-hash=1',0);
218	insert into t1 values ('aaaf', 'prefill-hash=4',0);
219	insert into t1 values ('aaag', 'prefill-hash=3',0);
220	insert into t1 values ('aaah', 'prefill-hash=6',0);
221	explain select * from t1 where a='aaaa';
222	id select_type table type possible_keys key key_len ref rows Extra
223	1 SIMPLE t1 ref a a 8 const 2 Using where
224	explain select * from t1 where a='aaab';
225	id select_type table type possible_keys key key_len ref rows Extra
226	1 SIMPLE t1 ref a a 8 const 2 Using where
227	explain select * from t1 where a='aaac';
228	id select_type table type possible_keys key key_len ref rows Extra
229	1 SIMPLE t1 ref a a 8 const 2 Using where
230	explain select * from t1 where a='aaad';
231	id select_type table type possible_keys key key_len ref rows Extra
232	1 SIMPLE t1 ref a a 8 const 2 Using where
233	insert into t1 select * from t1;
234	flush tables;
235	explain select * from t1 where a='aaaa';
236	id select_type table type possible_keys key key_len ref rows Extra
237	1 SIMPLE t1 ref a a 8 const 2 Using where
238	explain select * from t1 where a='aaab';
239	id select_type table type possible_keys key key_len ref rows Extra
240	1 SIMPLE t1 ref a a 8 const 2 Using where
241	explain select * from t1 where a='aaac';
242	id select_type table type possible_keys key key_len ref rows Extra
243	1 SIMPLE t1 ref a a 8 const 2 Using where
244	explain select * from t1 where a='aaad';
245	id select_type table type possible_keys key key_len ref rows Extra
246	1 SIMPLE t1 ref a a 8 const 2 Using where
247	flush tables;
248	explain select * from t1 where a='aaaa';
249	id select_type table type possible_keys key key_len ref rows Extra
250	1 SIMPLE t1 ref a a 8 const 2 Using where
251	explain select * from t1 where a='aaab';
252	id select_type table type possible_keys key key_len ref rows Extra
253	1 SIMPLE t1 ref a a 8 const 2 Using where
254	explain select * from t1 where a='aaac';
255	id select_type table type possible_keys key key_len ref rows Extra
256	1 SIMPLE t1 ref a a 8 const 2 Using where
257	explain select * from t1 where a='aaad';
258	id select_type table type possible_keys key key_len ref rows Extra
259	1 SIMPLE t1 ref a a 8 const 2 Using where
260	create table t2 as select * from t1;
261	delete from t1;
262	insert into t1 select * from t2;
263	explain select * from t1 where a='aaaa';
264	id select_type table type possible_keys key key_len ref rows Extra
265	1 SIMPLE t1 ref a a 8 const 2 Using where
266	explain select * from t1 where a='aaab';
267	id select_type table type possible_keys key key_len ref rows Extra
268	1 SIMPLE t1 ref a a 8 const 2 Using where
269	explain select * from t1 where a='aaac';
270	id select_type table type possible_keys key key_len ref rows Extra
271	1 SIMPLE t1 ref a a 8 const 2 Using where
272	explain select * from t1 where a='aaad';
273	id select_type table type possible_keys key key_len ref rows Extra
274	1 SIMPLE t1 ref a a 8 const 2 Using where
275	drop table t1, t2;
276	create table t1 (
277	id int unsigned not null primary key auto_increment,
278	name varchar(20) not null,
279	index heap_idx(name),
280	index btree_idx using btree(name)
281	) engine=heap;
282	create table t2 (
283	id int unsigned not null primary key auto_increment,
284	name varchar(20) not null,
285	index btree_idx using btree(name),
286	index heap_idx(name)
287	) engine=heap;
288	insert into t1 (name) values ('Matt'), ('Lilu'), ('Corbin'), ('Carly'),
289	('Suzy'), ('Hoppy'), ('Burrito'), ('Mimi'), ('Sherry'), ('Ben'), ('Phil'),
290	('Emily'), ('Mike');
291	insert into t2 select * from t1;
292	explain select * from t1 where name='matt';
293	id select_type table type possible_keys key key_len ref rows Extra
294	1 SIMPLE t1 ref heap_idx,btree_idx btree_idx 22 const 1 Using where
295	explain select * from t2 where name='matt';
296	id select_type table type possible_keys key key_len ref rows Extra
297	1 SIMPLE t2 ref btree_idx,heap_idx btree_idx 22 const 1 Using where
298	explain select * from t1 where name='Lilu';
299	id select_type table type possible_keys key key_len ref rows Extra
300	1 SIMPLE t1 ref heap_idx,btree_idx btree_idx 22 const 1 Using where
301	explain select * from t2 where name='Lilu';
302	id select_type table type possible_keys key key_len ref rows Extra
303	1 SIMPLE t2 ref btree_idx,heap_idx btree_idx 22 const 1 Using where
304	explain select * from t1 where name='Phil';
305	id select_type table type possible_keys key key_len ref rows Extra
306	1 SIMPLE t1 ref heap_idx,btree_idx btree_idx 22 const 1 Using where
307	explain select * from t2 where name='Phil';
308	id select_type table type possible_keys key key_len ref rows Extra
309	1 SIMPLE t2 ref btree_idx,heap_idx btree_idx 22 const 1 Using where
310	explain select * from t1 where name='Lilu';
311	id select_type table type possible_keys key key_len ref rows Extra
312	1 SIMPLE t1 ref heap_idx,btree_idx btree_idx 22 const 1 Using where
313	explain select * from t2 where name='Lilu';
314	id select_type table type possible_keys key key_len ref rows Extra
315	1 SIMPLE t2 ref btree_idx,heap_idx btree_idx 22 const 1 Using where
316	insert into t1 (name) select name from t2;
317	insert into t1 (name) select name from t2;
318	insert into t1 (name) select name from t2;
319	insert into t1 (name) select name from t2;
320	insert into t1 (name) select name from t2;
321	insert into t1 (name) select name from t2;
322	flush tables;
323	select count(*) from t1 where name='Matt';
324	count(*)
325	7
326	explain select * from t1 ignore index (btree_idx) where name='matt';
327	id select_type table type possible_keys key key_len ref rows Extra
328	1 SIMPLE t1 ref heap_idx heap_idx 22 const 7 Using where
329	show index from t1;
330	Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_Comment
331	t1 0 PRIMARY 1 id NULL 91 NULL NULL HASH
332	t1 1 heap_idx 1 name NULL 13 NULL NULL HASH
333	t1 1 btree_idx 1 name A NULL NULL NULL BTREE
334	show index from t1;
335	Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_Comment
336	t1 0 PRIMARY 1 id NULL 91 NULL NULL HASH
337	t1 1 heap_idx 1 name NULL 13 NULL NULL HASH
338	t1 1 btree_idx 1 name A NULL NULL NULL BTREE
339	create table t3
340	(
341	a varchar(20) not null,
342	b varchar(20) not null,
343	key (a,b)
344	) engine=heap;
345	insert into t3 select name, name from t1;
346	show index from t3;
347	Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_Comment
348	t3 1 a 1 a NULL NULL NULL NULL HASH
349	t3 1 a 2 b NULL 13 NULL NULL HASH
350	show index from t3;
351	Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_Comment
352	t3 1 a 1 a NULL NULL NULL NULL HASH
353	t3 1 a 2 b NULL 13 NULL NULL HASH
354	explain select * from t1 ignore key(btree_idx), t3 where t1.name='matt' and t3.a = concat('',t1.name) and t3.b=t1.name;
355	id select_type table type possible_keys key key_len ref rows Extra
356	1 SIMPLE t1 ref heap_idx heap_idx 22 const 7 Using where
357	1 SIMPLE t3 ref a a 44 func,const 7 Using where
358	drop table t1, t2, t3;
359	create temporary table t1 ( a int, index (a) ) engine=memory;
360	insert into t1 values (1),(2),(3),(4),(5);
361	select a from t1 where a in (1,3);
362	a
363	1
364	3
365	explain select a from t1 where a in (1,3);
366	id select_type table type possible_keys key key_len ref rows Extra
367	1 SIMPLE t1 range a a 5 NULL 4 Using where
368	drop table t1;
369	End of 4.1 tests
370	CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
371	col2 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
372	UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
373	INSERT INTO t1 VALUES('A', 'A');
374	INSERT INTO t1 VALUES('A ', 'A ');
375	ERROR 23000: Duplicate entry 'A -A ' for key 'key1'
376	DROP TABLE t1;
377	CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
378	col2 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
379	UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
380	INSERT INTO t1 VALUES('A', 'A');
381	INSERT INTO t1 VALUES('A ', 'A ');
382	ERROR 23000: Duplicate entry 'A -A ' for key 'key1'
383	DROP TABLE t1;
384	End of 5.0 tests