path: root/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, key(a)) 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;

#
# 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 t6, t5, t4, t3, t2, t1;

#
# testing merge::records_in_range and optimizer
#

DROP TABLE IF EXISTS t1, t2;
CREATE TABLE t1 (
  fileset_id tinyint(3) unsigned NOT NULL default '0',
  file_code varchar(32) NOT NULL default '',
  fileset_root_id tinyint(3) unsigned NOT NULL default '0',
  PRIMARY KEY  (fileset_id,file_code),
  KEY files (fileset_id,fileset_root_id)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (2, '0000000111', 1), (2, '0000000112', 1), (2, '0000000113', 1),
(2, '0000000114', 1), (2, '0000000115', 1), (2, '0000000116', 1), (2, '0000000117', 1),
(2, '0000000118', 1), (2, '0000000119', 1), (2, '0000000120', 1);
CREATE TABLE t2 (
  fileset_id tinyint(3) unsigned NOT NULL default '0',
  file_code varchar(32) NOT NULL default '',
  fileset_root_id tinyint(3) unsigned NOT NULL default '0',
  PRIMARY KEY  (fileset_id,file_code),
  KEY files (fileset_id,fileset_root_id)
) TYPE=MRG_MyISAM UNION=(t1);

EXPLAIN SELECT * FROM t2 IGNORE INDEX (files) WHERE fileset_id = 2
AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
EXPLAIN SELECT * FROM t1 WHERE fileset_id = 2
AND file_code BETWEEN '0000000115' AND '0000000120' LIMIT 1;
EXPLAIN SELECT * FROM t2 WHERE fileset_id = 2
AND file_code = '0000000115' LIMIT 1;
DROP TABLE IF EXISTS t1, t2;

#
# Test of ORDER BY DESC on key (Bug #515)
#

create table t1 (x int, y int, index xy(x, y));
create table t2 (x int, y int, index xy(x, y));
create table t3 (x int, y int, index xy(x, y)) type=merge union=(t1,t2);
insert into t1 values(1, 2);
insert into t2 values(1, 3);
select * from t3 where x = 1 and y < 5 order by y;
# Bug is that followng query returns empty set while it must be same as above
select * from t3 where x = 1 and y < 5 order by y desc;
drop table t1,t2,t3;

#
# Bug#5232: CREATE TABLE ... SELECT
#

create table t1 (a int);
create table t2 (a int);
insert into t1 values (0);
insert into t2 values (1);
--error 1093
create table t3 engine=merge union=(t1, t2) select * from t1;
--error 1093
create table t3 engine=merge union=(t1, t2) select * from t2;
drop table t1, t2;

#
# Bug#9112 - Merge table with composite index producing invalid results with some queries
# This test case will fail only without the bugfix and some
# non-deterministic circumstances. It depends on properly initialized
# "un-initialized" memory. At the time it happens with a standard
# non-debug build. But there is no guarantee that this will be always so.
#
create table t1 (
 a double(14,4),
 b varchar(10),
 index (a,b)
) engine=merge union=(t2,t3);

create table t2 (
 a double(14,4),
 b varchar(10),
 index (a,b)
) engine=myisam;

create table t3 (
 a double(14,4),
 b varchar(10),
 index (a,b)
) engine=myisam;

insert into t2 values ( null, '');
insert into t2 values ( 9999999999.999, '');
insert into t3 select * from t2;
select min(a), max(a) from t1;
flush tables;
select min(a), max(a) from t1;
drop table t1, t2, t3;

#
# BUG#5390 - problems with merge tables
# Problem #1: INSERT...SELECT
#
#drop table if exists t1, t2, t3;
create table t1(a int);
create table t2(a int);
insert into t1 values (1);
insert into t2 values (2);
create table t3 (a int) engine=merge union=(t1, t2) insert_method=first;
select * from t3;
#
insert t2 select * from t2;
select * from t2;
#
insert t3 select * from t1;
select * from t3;
#
insert t1 select * from t3;
select * from t1;
select * from t2;
select * from t3;
check table t1, t2;
drop table t1, t2, t3;