temp_table.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.

# mysqltest should be fixed
-- source include/not_embedded.inc
#
# Test of temporary tables
#

--disable_warnings
drop table if exists t1,t2;
drop view if exists v1;
--enable_warnings

CREATE TABLE t1 (c int not null, d char (10) not null);
insert into t1 values(1,""),(2,"a"),(3,"b");
CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
insert into t1 values(4,"e"),(5,"f"),(6,"g");
alter table t1 rename t2;
select * from t1;
select * from t2;
CREATE TABLE t2 (x int not null, y int not null);
alter table t2 rename t1;
select * from t1;
create TEMPORARY TABLE t2 engine=heap select * from t1;
create TEMPORARY TABLE IF NOT EXISTS t2 (a int) engine=heap;

# This should give errors
--error 1050
CREATE TEMPORARY TABLE t1 (a int not null, b char (10) not null);
--error 1050
ALTER TABLE t1 RENAME t2;

select * from t2;
alter table t2 add primary key (a,b);
drop table t1,t2;
select * from t1;
drop table t2;
create temporary table t1 select *,2 as "e" from t1;
select * from t1;
drop table t1;
drop table t1;

#
# Test CONCAT_WS with temporary tables
#

CREATE TABLE t1 (pkCrash INTEGER PRIMARY KEY,strCrash VARCHAR(255));
INSERT INTO t1 ( pkCrash, strCrash ) VALUES ( 1, '1');
SELECT CONCAT_WS(pkCrash, strCrash) FROM t1;
drop table t1;
create temporary table t1 select 1 as 'x';
drop table t1;
CREATE TABLE t1 (x INT);
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TEMPORARY TABLE tmp SELECT *, NULL FROM t1;
drop table t1;

#
# Problem with ELT
#
create temporary table t1 (id int(10) not null unique);
create temporary table t2 (id int(10) not null primary key, 
val int(10) not null);

# put in some initial values
insert into t1 values (1),(2),(4);
insert into t2 values (1,1),(2,1),(3,1),(4,2);

# do a query using ELT, a join and an ORDER BY.
select one.id, two.val, elt(two.val,'one','two') from t1 one, t2 two where two.id=one.id order by one.id;
drop table t1,t2;

#
# Test of failed ALTER TABLE on temporary table
#
create temporary table t1 (a int not null);
insert into t1 values (1),(1);
-- error 1062
alter table t1 add primary key (a);
drop table t1;

#
# In MySQL 4.0.4 doing a GROUP BY on a NULL column created a disk based
# temporary table when a memory based one would be good enough.

CREATE TABLE t1 (
  d datetime default NULL
) ENGINE=MyISAM;


INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');

flush status;
select * from t1 group by d;
show status like "created_tmp%tables";
drop table t1;

# Fix for BUG#8921: Check that temporary table is ingored by view commands.
create temporary table v1 as select 'This is temp. table' A;
create view v1 as select 'This is view' A;
select * from v1;
show create table v1;
show create view v1;
drop view v1;
select * from v1;
create view v1 as select 'This is view again' A;
select * from v1;
drop table v1;
select * from v1;
drop view v1;

# Bug #8497: tmpdir with extra slashes would cause failures
#
create table t1 (a int, b int, index(a), index(b));
create table t2 (c int auto_increment, d varchar(255), primary key (c));
insert into t1 values (3,1),(3,2);
insert into t2 values (NULL, 'foo'), (NULL, 'bar');
select d, c from t1 left join t2 on b = c where a = 3 order by d;
drop table t1, t2;


#
# BUG#21096: locking issue ; temporary table conflicts.
#
# The problem was that on DROP TEMPORARY table name lock was acquired,
# which should not be done.
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

CREATE TABLE t1 (i INT);

LOCK TABLE t1 WRITE;

connect (conn1, localhost, root,,);

CREATE TEMPORARY TABLE t1 (i INT);

--echo The following command should not block
DROP TEMPORARY TABLE t1;

disconnect conn1;
connection default;

DROP TABLE t1;

#
# Check that it's not possible to drop a base table with
# DROP TEMPORARY statement.
#
CREATE TABLE t1 (i INT);
CREATE TEMPORARY TABLE t2 (i INT);

--error 1051
DROP TEMPORARY TABLE t2, t1;

# Table t2 should have been dropped.
--error 1146
SELECT * FROM t2;
# But table t1 should still be there.
SELECT * FROM t1;

DROP TABLE t1;


--echo End of 4.1 tests.

#
# Bug #24791: Union with AVG-groups generates wrong results
#
CREATE TABLE t1 ( c FLOAT( 20, 14 ) );
INSERT INTO t1 VALUES( 12139 );

CREATE TABLE t2 ( c FLOAT(30,18) );
INSERT INTO t2 VALUES( 123456 );

SELECT AVG( c ) FROM t1 UNION SELECT 1;
SELECT 1 UNION SELECT AVG( c ) FROM t1;
SELECT 1 UNION SELECT * FROM t2 UNION SELECT 1;
SELECT c/1 FROM t1 UNION SELECT 1;

DROP TABLE t1, t2;