path: root/mysql-test/t/merge.test

#
# Test of MERGE TABLES
#

--disable_warnings
drop table if exists t1,t2,t3,t4,t5,t6;
drop database if exists mysqltest;
--enable_warnings

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)) engine=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)) engine=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)) engine=MERGE UNION=(t1,t2);
--error 1168
select * from t4;
--error 1168
alter table t4 add column c int;

#
# Test tables in different databases
#
create database mysqltest;
create table mysqltest.t6 (a int not null primary key auto_increment, message char(20));
create table t5 (a int not null, b char(20), key(a)) engine=MERGE UNION=(test.t1,mysqltest.t6);
show create table t5;
alter table t5 engine=myisam;
drop table t5, mysqltest.t6;
drop database mysqltest;

# Because of windows, it's important that we drop the merge tables first!
drop table t4,t3,t1,t2;
  
create table t1 (c char(10)) engine=myisam;
create table t2 (c char(10)) engine=myisam;
create table t3 (c char(10)) union=(t1,t2) engine=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))
ENGINE=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 ENGINE=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))
ENGINE=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)) engine=merge;
select * from t1;
drop table t1;

#
# Bug in flush tables combined with MERGE tables
#

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)) ENGINE=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
#

# 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)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=NO;
create table t5 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
create table t6 (a int not null, b int not null auto_increment, primary key(a,b)) ENGINE=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;
insert into t1 values (99,NULL);
select * from t4 where a+0 > 90;
# bug#4008 - cannot determine a unique key that caused "dupl. key error"
--error 1062
insert t5 values (1,1);
--error 1062
insert t6 values (2,1);
insert t5 values (1,1) on duplicate key update b=b+10;
insert t6 values (2,1) on duplicate key update b=b+20;
select * from t5 where a < 3;
drop table 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)) ENGINE=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)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,2), (2,2);
CREATE TABLE t3 (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  KEY a (a,b)) ENGINE=MRG_MyISAM UNION=(t1,t2);
select max(b) from t3 where a = 2;
select max(b) from t1 where a = 2;
drop table t3,t1,t2;

#
# temporary merge tables
#
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) ENGINE=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) ENGINE=MERGE UNION=(t4,t5);
select * from t6;
drop table t6, t3, t1, t2, t4, t5;

#
# testing merge::records_in_range and optimizer
#

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)
) ENGINE=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)
) ENGINE=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 t2, t1;

#
# 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)) engine=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;
--error 1093
create table t3 engine=merge union=(t1, t2) select (select max(a) 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#6699 : no sorting on 'ref' retrieval 
create table t1 (a int,b int,c int, index (a,b,c));
create table t2 (a int,b int,c int, index (a,b,c));
create table t3 (a int,b int,c int, index (a,b,c))
  engine=merge union=(t1 ,t2);
insert into t1 (a,b,c) values (1,1,0),(1,2,0);
insert into t2 (a,b,c) values (1,1,1),(1,2,1);

explain select a,b,c from t3 force index (a) where a=1 order by a,b,c;
select a,b,c from t3 force index (a) where a=1 order by a,b,c;

# this actually wasn't affected:
explain select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;
select a,b,c from t3 force index (a) where a=1 order by a desc, b desc, c desc;

# BUG#7377 SHOW index on MERGE table crashes debug server
show index from t3;

drop table t1, t2, t3;

#
# Bug#10400 - Improperly-defined MERGE table crashes with INSERT ... ON DUPLICATE KEY UPDATE
#
CREATE TABLE t1 ( a INT AUTO_INCREMENT PRIMARY KEY, b VARCHAR(10), UNIQUE (b) )
  ENGINE=MyISAM;
CREATE TABLE t2 ( a INT AUTO_INCREMENT, b VARCHAR(10), INDEX (a), INDEX (b) )
  ENGINE=MERGE UNION (t1) INSERT_METHOD=FIRST;
INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=2;
INSERT INTO t2 (b) VALUES (1) ON DUPLICATE KEY UPDATE b=3;
SELECT b FROM t2;
DROP TABLE t1, t2;


#
# 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;

#
# BUG#21617 - crash when selecting from merge table with inconsistent
# indexes
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES(2),(1);
CREATE TABLE t2(a INT, KEY(a)) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM t2 WHERE a=2;
DROP TABLE t1, t2;

#
# BUG#10974 - No error message if merge table based on union of innodb,
# memory
#
CREATE TABLE t1(a INT) ENGINE=MEMORY;
CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM t2;
DROP TABLE t1, t2;
CREATE TABLE t2(a INT) ENGINE=MERGE UNION=(t3);
--error 1168
SELECT * FROM t2;
DROP TABLE t2;

#
# Underlying table definition conformance tests.
#
CREATE TABLE t1(a INT, b TEXT);
CREATE TABLE tm1(a TEXT, b INT) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM tm1;
DROP TABLE t1, tm1;

CREATE TABLE t1(a SMALLINT, b SMALLINT);
CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM tm1;
DROP TABLE t1, tm1;

CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(a, b));
CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM tm1;
DROP TABLE t1, tm1;

CREATE TABLE t1(a SMALLINT, b SMALLINT, KEY(b));
CREATE TABLE tm1(a SMALLINT, b SMALLINT, KEY(a)) ENGINE=MERGE UNION=(t1);
--error 1168
SELECT * FROM tm1;
DROP TABLE t1, tm1;


# BUG#26881 - Large MERGE tables report incorrect specification when no
#             differences in tables
#
CREATE TABLE t1(c1 VARCHAR(1));
CREATE TABLE m1 LIKE t1;
ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
SELECT * FROM m1;
DROP TABLE t1, m1;

CREATE TABLE t1(c1 VARCHAR(4), c2 TINYINT, c3 TINYINT, c4 TINYINT,
                c5 TINYINT, c6 TINYINT, c7 TINYINT, c8 TINYINT, c9 TINYINT);
CREATE TABLE m1 LIKE t1;
ALTER TABLE m1 ENGINE=MERGE UNION=(t1);
SELECT * FROM m1;
DROP TABLE t1, m1;

#
# BUG#24342 - Incorrect results with query over MERGE table
#
CREATE TABLE t1 (a VARCHAR(255) CHARACTER SET latin1 COLLATE latin1_german2_ci,
                 b INT, INDEX(a,b));
CREATE TABLE t2 LIKE t1;
CREATE TABLE t3 LIKE t1;
ALTER TABLE t3 ENGINE=MERGE UNION=(t1,t2);
INSERT INTO t1 VALUES ('ss',1);
INSERT INTO t2 VALUES ('ss',2),(0xDF,2);
SELECT COUNT(*) FROM t3 WHERE a=0xDF AND b=2;
DROP TABLE t1,t2,t3;

# End of 4.1 tests

#
# BUG#19648 - Merge table does not work with bit types
#
create table t1 (b bit(1));
create table t2 (b bit(1));
create table tm (b bit(1)) engine = merge union = (t1,t2);
select * from tm;
drop table tm, t1, t2;

#
# Bug #17766: The server accepts to create MERGE tables which cannot work
#
create table t1 (a int) insert_method = last engine = merge;
--error ER_OPEN_AS_READONLY
insert into t1 values (1);
create table t2 (a int) engine = myisam;
alter table t1 union (t2);
insert into t1 values (1);
alter table t1 insert_method = no;
--error ER_OPEN_AS_READONLY
insert into t1 values (1);
drop table t2;
drop table t1;

#
# BUG#26976 - Missing table in merge not noted in related error msg + SHOW
#             CREATE TABLE fails
#
CREATE TABLE tm1(a INT) ENGINE=MERGE UNION=(t1, t2);
--error 1168
SELECT * FROM tm1;
CHECK TABLE tm1;
CREATE TABLE t1(a INT);
--error 1168
SELECT * FROM tm1;
CHECK TABLE tm1;
CREATE TABLE t2(a BLOB);
--error 1168
SELECT * FROM tm1;
CHECK TABLE tm1;
ALTER TABLE t2 MODIFY a INT;
SELECT * FROM tm1;
CHECK TABLE tm1;
DROP TABLE tm1, t1, t2;

#
# Bug#15522 - create ... select and with merge tables
#
# This was fixed together with Bug#20662 (Infinite loop in CREATE TABLE
# IF NOT EXISTS ... SELECT with locked tables).
# The new behavior for MERGE tables is consistent with the
# CREATE TABLE SELECT behavior for ordinary tables.
#
CREATE TABLE t1(c1 INT);
CREATE TABLE t2 (c1 INT) ENGINE=MERGE UNION=(t1) INSERT_METHOD=FIRST;
--error ER_UPDATE_TABLE_USED
CREATE TABLE IF NOT EXISTS t1 SELECT * FROM t2;
DROP TABLE t1, t2;

#
# Bug #28837: MyISAM storage engine error (134) doing delete with self-join
#

CREATE TABLE t1 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MyISAM;
CREATE TABLE t2 LIKE t1;

INSERT INTO t2 (id, ref) VALUES (1,3), (2,1), (3,2), (4,5), (4,4);
INSERT INTO t1 SELECT * FROM t2;
INSERT INTO t1 SELECT * FROM t2;

CREATE TABLE t3 (id INT NOT NULL, ref INT NOT NULL, INDEX (id)) ENGINE=MERGE
                                                                UNION(t1);

SELECT * FROM t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
SELECT * FROM t3;
DELETE FROM a USING t3 AS a INNER JOIN t3 AS b USING (id) WHERE a.ref < b.ref;
SELECT * FROM t3;

DROP TABLE t1, t2, t3;

#
# BUG#28248 - mysqldump results with MERGE ... UNION=() cannot be executed
#
CREATE TABLE t1(a INT);
CREATE TABLE m1(a INT) ENGINE=MERGE;
SHOW CREATE TABLE m1;
DROP TABLE m1;
CREATE TABLE m1(a INT) ENGINE=MERGE UNION=();
SHOW CREATE TABLE m1;
ALTER TABLE m1 UNION=(t1);
ALTER TABLE m1 UNION=();
SHOW CREATE TABLE m1;
DROP TABLE t1, m1;

#
# BUG#32047 - 'Spurious' errors while opening MERGE tables
#
CREATE TABLE t1(a INT);
CREATE TABLE t2(a VARCHAR(10));
CREATE TABLE m1(a INT) ENGINE=MERGE UNION=(t1, t2);
CREATE TABLE m2(a INT) ENGINE=MERGE UNION=(t1);
SELECT * FROM t1;
--error ER_WRONG_MRG_TABLE
SELECT * FROM m1;
SELECT * FROM m2;
DROP TABLE t1, t2, m1, m2;

--echo End of 5.0 tests