mariadb/mysql-test/t/merge.test

#
# test of MERGE TABLES
#

drop table if exists t1,t2,t3,t4,t5,t6;
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=(test.t1,test.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;
delete from t3 where a=3;
select * from t3 where a < 10;
delete from t3 where a >= 6 and a <= 8;
select * from t3 where a < 10;
update t3 set a=3 where a=9;
select * from t3 where a < 10;
update t3 set a=6 where a=7;
select * from t3 where a < 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;

#
# [phi] testing INSERT_METHOD stuff
#

drop table if exists t6, t5, t4, t3, t2, t1;
# first testing of common stuff with new parameters
create table t1 (a int not null, b int not null auto_increment, primary key(a,b));
create table t2 (a int not null, b int not null auto_increment, primary key(a,b));
create table t3 (a int not null, b int not null, key(a,b)) UNION=(t1,t2) INSERT_METHOD=NO;
create table t4 (a int not null, b int not null, key(a,b)) TYPE=MERGE UNION=(t1,t2) INSERT_METHOD=NO;
create table t5 (a int not null, b int not null auto_increment, primary key(a,b)) TYPE=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
create table t6 (a int not null, b int not null auto_increment, primary key(a,b)) TYPE=MERGE UNION=(t1,t2) INSERT_METHOD=LAST;
show create table t3;
show create table t4;
show create table t5;
show create table t6;
insert into t1 values (1,NULL),(1,NULL),(1,NULL),(1,NULL);
insert into t2 values (2,NULL),(2,NULL),(2,NULL),(2,NULL);
select * from t3 order by b,a limit 3;
select * from t4 order by b,a limit 3;
select * from t5 order by b,a limit 3,3;
select * from t6 order by b,a limit 6,3;
# now testing inserts and where the data gets written
insert into t5 values (5,1),(5,2);
insert into t6 values (6,1),(6,2);
select * from t1 order by a,b;
select * from t2 order by a,b;
select * from t4 order by a,b;
# preperation for next test
insert into t3 values (3,1),(3,2),(3,3),(3,4);
select * from t3 order by a,b;
# now testing whether options are kept by alter table
alter table t4 UNION=(t1,t2,t3);
show create table t4;
select * from t4 order by a,b;
# testing switching off insert method and inserts again
alter table t4 INSERT_METHOD=FIRST;
show create table t4;
insert into t4 values (4,1),(4,2);
select * from t1 order by a,b;
select * from t2 order by a,b;
select * from t3 order by a,b;
select * from t4 order by a,b;
select * from t5 order by a,b;
# auto_increment
select 1;
insert into t5 values (1,NULL),(5,NULL);
insert into t6 values (2,NULL),(6,NULL);
select * from t1 order by a,b;
select * from t2 order by a,b;
select * from t5 order by a,b;
select * from t6 order by a,b;
drop table if exists t6, t5, t4, t3, t2, t1;

CREATE TABLE t1 (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  PRIMARY KEY  (a,b)) TYPE=MyISAM;
INSERT INTO t1 VALUES (1,1), (2,1);
CREATE TABLE t2 (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  PRIMARY KEY  (a,b)) TYPE=MyISAM;
INSERT INTO t2 VALUES (1,2), (2,2);
CREATE TABLE t (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  KEY a (a,b)) TYPE=MRG_MyISAM UNION=(t1,t2);
select max(b) from t where a = 2;
select max(b) from t1 where a = 2;
drop table if exists t,t1,t2;