2
# Test of MEMORY tables.
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6
drop table if exists t1,t2;
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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;
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create temporary table t1 (a int not null,b int not null, primary key using HASH (a)) engine=MEMORY comment="testing heaps";
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10
insert into t1 values(1,1),(2,2),(3,3),(4,4);
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delete from t1 where a=1 or a=0;
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12
#show table status like "t1";
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alter table t1 add c int not null, add key using HASH (c,a);
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create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
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create temporary table t1 (a int not null,b int not null, primary key using HASH (a)) engine=MEMORY comment="testing heaps";
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insert into t1 values(1,1),(2,2),(3,3),(4,4);
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delete from t1 where a > 0;
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create table t1 (a int not null,b int not null, primary key using HASH (a)) engine=heap comment="testing heaps";
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create temporary table t1 (a int not null,b int not null, primary key using HASH (a)) engine=MEMORY comment="testing heaps";
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insert into t1 values(1,1),(2,2),(3,3),(4,4);
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alter table t1 modify a int not null auto_increment, engine=myisam, comment="new myisam table";
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alter table t1 modify a int not null auto_increment, engine=innodb, comment="new innodb table";
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#show table status like "t1";
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create table t1 (a int not null) engine=heap;
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create temporary table t1 (a int not null) engine=MEMORY;
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insert into t1 values (869751),(736494),(226312),(802616),(728912);
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select * from t1 where a > 736494;
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alter table t1 add unique uniq_id using HASH (a);
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select * from t1 where a = 736494;
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select * from t1 where a=869751 or a=736494;
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select * from t1 where a in (869751,736494,226312,802616);
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alter table t1 engine=myisam;
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alter table t1 engine=innodb;
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explain select * from t1 where a in (869751,736494,226312,802616);
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create table t1 (x int not null, y int not null, key x using HASH (x), unique y using HASH (y))
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create temporary table t1 (x int not null, y int not null, key x using HASH (x), unique y using HASH (y))
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insert into t1 values (1,1),(2,2),(1,3),(2,4),(2,5),(2,6);
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select * from t1 where x=1;
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select * from t1,t1 as t2 where t1.x=t2.y;
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explain select * from t1,t1 as t2 where t1.x=t2.y;
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create table t1 (a int) engine=heap;
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create temporary table t1 (a int) engine=MEMORY;
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insert into t1 values(1);
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select max(a) from t1;
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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;
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CREATE TEMPORARY TABLE t1 ( a int not null default 0, b int not null default 0, key using HASH (a), key using HASH (b) ) ENGINE=MEMORY;
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insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
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select * from t1 where a=1;
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insert into t1 values(1,1),(1,2),(2,3),(1,3),(1,4),(1,5),(1,6);
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select * from t1 where a=1;
68
create table t1 (id int unsigned not null, primary key using HASH (id)) engine=HEAP;
70
create temporary table t1 (id int not null, primary key using HASH (id)) engine=MEMORY;
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71
insert into t1 values(1);
70
72
select max(id) from t1;
71
73
insert into t1 values(2);
73
75
replace into t1 values(1);
76
create table t1 (n int) engine=heap;
78
create temporary table t1 (n int) engine=MEMORY;
79
create table t1 (n int) engine=heap;
81
create temporary table t1 (n int) engine=MEMORY;
80
82
drop table if exists t1;
82
84
# Test of non unique index
84
CREATE table t1(f1 int not null,f2 char(20) not
85
null,index(f2)) engine=heap;
86
CREATE TEMPORARY table t1(f1 int not null,f2 char(20) not
87
null,index(f2)) engine=MEMORY;
86
88
INSERT into t1 set f1=12,f2="bill";
87
89
INSERT into t1 set f1=13,f2="bill";
88
90
INSERT into t1 set f1=14,f2="bill";
100
102
# Test when using part key searches
103
create table t1 (btn char(10) not null, key using HASH (btn)) engine=heap;
105
create temporary table t1 (btn char(10) not null, key using HASH (btn)) engine=MEMORY;
104
106
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
105
107
explain select * from t1 where btn like "q%";
106
108
select * from t1 where btn like "q%";
114
116
# Test of NULL keys
119
CREATE TEMPORARY TABLE t1 (
118
120
a int default NULL,
119
121
b int default NULL,
120
122
KEY a using HASH (a),
121
123
UNIQUE b using HASH (b)
123
125
INSERT INTO t1 VALUES (NULL,99),(99,NULL),(1,1),(2,2),(1,3);
124
126
SELECT * FROM t1 WHERE a=NULL;
125
127
explain SELECT * FROM t1 WHERE a IS NULL;
136
138
# Test when deleting all rows
139
CREATE TABLE t1 (a int not null, primary key using HASH (a)) engine=heap;
141
CREATE TEMPORARY TABLE t1 (a int not null, primary key using HASH (a)) engine=MEMORY;
140
142
INSERT into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11);
141
143
DELETE from t1 where a < 100;
142
144
SELECT * from t1;
197
200
# Btree and hash index use costs.
199
id int unsigned not null primary key auto_increment,
201
create temporary table t1 (
202
id int not null primary key auto_increment,
200
203
name varchar(20) not null,
201
204
index heap_idx(name),
202
205
index btree_idx using btree(name)
206
id int unsigned not null primary key auto_increment,
208
create temporary table t2 (
209
id int not null primary key auto_increment,
207
210
name varchar(20) not null,
208
211
index btree_idx using btree(name),
209
212
index heap_idx(name)
212
215
insert into t1 (name) values ('Matt'), ('Lilu'), ('Corbin'), ('Carly'),
213
216
('Suzy'), ('Hoppy'), ('Burrito'), ('Mimi'), ('Sherry'), ('Ben'), ('Phil'),
268
271
# Check that HASH indexes disregard trailing spaces when comparing
269
272
# strings with binary collations
271
CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
272
col2 VARCHAR(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
274
CREATE TEMPORARY TABLE t1(col1 VARCHAR(32) COLLATE utf8_bin NOT NULL,
275
col2 VARCHAR(32) COLLATE utf8_bin NOT NULL,
273
276
UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
274
277
INSERT INTO t1 VALUES('A', 'A');
275
278
--error ER_DUP_ENTRY
276
279
INSERT INTO t1 VALUES('A ', 'A ');
278
CREATE TABLE t1(col1 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
279
col2 VARCHAR(32) CHARACTER SET latin1 COLLATE latin1_bin NOT NULL,
281
CREATE TEMPORARY TABLE t1(col1 VARCHAR(32) COLLATE utf8_bin NOT NULL,
282
col2 VARCHAR(32) COLLATE utf8_bin NOT NULL,
280
283
UNIQUE KEY key1 USING HASH (col1, col2)) ENGINE=MEMORY;
281
284
INSERT INTO t1 VALUES('A', 'A');
282
285
--error ER_DUP_ENTRY