merge.test

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

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;

--echo End of 5.0 tests