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Text File | 2003-01-21 | 4.3 KB | 136 lines | [TEXT/ttxt] |
- #
- # test of MERGE TABLES
- #
-
- drop table if exists t1,t2,t3;
- create table t1 (a int not null primary key auto_increment, message char(20));
- create table t2 (a int not null primary key auto_increment, message char(20));
- INSERT INTO t1 (message) VALUES ("Testing"),("table"),("t1");
- INSERT INTO t2 (message) VALUES ("Testing"),("table"),("t2");
- create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(t1,t2);
- select * from t3;
- select * from t3 order by a desc;
- drop table t3;
- insert into t1 select NULL,message from t2;
- insert into t2 select NULL,message from t1;
- insert into t1 select NULL,message from t2;
- insert into t2 select NULL,message from t1;
- insert into t1 select NULL,message from t2;
- insert into t2 select NULL,message from t1;
- insert into t1 select NULL,message from t2;
- insert into t2 select NULL,message from t1;
- insert into t1 select NULL,message from t2;
- insert into t2 select NULL,message from t1;
- insert into t1 select NULL,message from t2;
- create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(t1,t2);
- explain select * from t3 where a < 10;
- explain select * from t3 where a > 10 and a < 20;
- select * from t3 where a = 10;
- select * from t3 where a < 10;
- select * from t3 where a > 10 and a < 20;
- explain select a from t3 order by a desc limit 10;
- select a from t3 order by a desc limit 10;
- select a from t3 order by a desc limit 300,10;
- show create table t3;
-
- # The following should give errors
- create table t4 (a int not null, b char(10), key(a)) type=MERGE UNION=(t1,t2);
- --error 1016
- select * from t4;
- --error 1212
- create table t5 (a int not null, b char(10), key(a)) type=MERGE UNION=(test.t1,test_2.t2);
-
- # Because of windows, it's important that we drop the merge tables first!
- drop table if exists t5,t4,t3,t1,t2;
-
- create table t1 (c char(10)) type=myisam;
- create table t2 (c char(10)) type=myisam;
- create table t3 (c char(10)) union=(t1,t2) type=merge;
- insert into t1 (c) values ('test1');
- insert into t1 (c) values ('test1');
- insert into t1 (c) values ('test1');
- insert into t2 (c) values ('test2');
- insert into t2 (c) values ('test2');
- insert into t2 (c) values ('test2');
- select * from t3;
- select * from t3;
- delete from t3 where 1=1;
- select * from t3;
- select * from t1;
- drop table t3,t2,t1;
-
- #
- # Test 2
- #
-
- CREATE TABLE t1 (incr int not null, othr int not null, primary key(incr));
- CREATE TABLE t2 (incr int not null, othr int not null, primary key(incr));
- CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
- TYPE=MERGE UNION=(t1,t2);
-
- SELECT * from t3;
-
- INSERT INTO t1 VALUES ( 1,10),( 3,53),( 5,21),( 7,12),( 9,17);
- INSERT INTO t2 VALUES ( 2,24),( 4,33),( 6,41),( 8,26),( 0,32);
- INSERT INTO t1 VALUES (11,20),(13,43),(15,11),(17,22),(19,37);
- INSERT INTO t2 VALUES (12,25),(14,31),(16,42),(18,27),(10,30);
-
- SELECT * from t3 where incr in (1,2,3,4) order by othr;
- alter table t3 UNION=(t1);
- select count(*) from t3;
- alter table t3 UNION=(t1,t2);
- select count(*) from t3;
- alter table t3 TYPE=MYISAM;
- select count(*) from t3;
-
- # Test that ALTER TABLE rembers the old UNION
-
- drop table t3;
- CREATE TABLE t3 (incr int not null, othr int not null, primary key(incr))
- TYPE=MERGE UNION=(t1,t2);
- show create table t3;
- alter table t3 drop primary key;
- show create table t3;
-
- drop table t3,t2,t1;
-
- #
- # Test table without unions
- #
- create table t1 (a int not null) type=merge;
- select * from t1;
- drop table t1;
-
- #
- # Bug found by Monty.
- #
-
- drop table if exists t3, t2, t1;
- create table t1 (a int not null, b int not null, key(a,b));
- create table t2 (a int not null, b int not null, key(a,b));
- create table t3 (a int not null, b int not null, key(a,b)) TYPE=MERGE UNION=(t1,t2);
- insert into t1 values (1,2),(2,1),(0,0),(4,4),(5,5),(6,6);
- insert into t2 values (1,1),(2,2),(0,0),(4,4),(5,5),(6,6);
- flush tables;
- select * from t3 where a=1 order by b limit 2;
- drop table t3,t1,t2;
-
- #
- # temporary merge tables
- #
- drop table if exists t1, t2, t3, t4, t5, t6;
- create table t1 (a int not null);
- create table t2 (a int not null);
- insert into t1 values (1);
- insert into t2 values (2);
- create temporary table t3 (a int not null) TYPE=MERGE UNION=(t1,t2);
- select * from t3;
- create temporary table t4 (a int not null);
- create temporary table t5 (a int not null);
- insert into t4 values (1);
- insert into t5 values (2);
- create temporary table t6 (a int not null) TYPE=MERGE UNION=(t4,t5);
- select * from t6;
- drop table if exists t1, t2, t3, t4, t5, t6;
-
-