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# Establish connection con1 (user=root)
# Establish connection con2 (user=root)
drop table if exists t1,t2;
# Switch to connection con1
create table t1 (id integer, x integer) engine = InnoDB;
insert into t1 values(0, 0);
set autocommit=0;
SELECT * from t1 where id = 0 FOR UPDATE;
id x
0 0
# Switch to connection con2
set autocommit=0;
update t1 set x=2 where id = 0;
# Switch to connection con1
update t1 set x=1 where id = 0;
select * from t1;
id x
0 1
commit;
# Switch to connection con2
commit;
# Switch to connection con1
select * from t1;
id x
0 2
commit;
drop table t1;
# Switch to connection con1
create table t1 (id integer, x integer) engine = InnoDB;
create table t2 (b integer, a integer) engine = InnoDB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 10), (1, 20), (2, 30);
commit;
set autocommit=0;
select * from t2;
b a
0 10
1 20
2 30
select x from t1 where id=0 FOR UPDATE;
x
0
update t2 set a=100 where b=(SELECT x from t1 where id = b);
select * from t2;
b a
0 100
1 20
2 30
select * from t1;
id x
0 0
300 300
# Switch to connection con2
set autocommit=0;
update t1 set x=2 where id = 0;
# Switch to connection con1
update t1 set x=1 where id = 0;
select * from t1;
id x
0 1
300 300
commit;
# Switch to connection con2
commit;
# Switch to connection con1
select * from t1;
id x
0 2
300 300
commit;
drop table t1, t2;
create table t1 (id integer, x integer) engine = InnoDB;
create table t2 (b integer, a integer) engine = InnoDB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 0), (1, 20), (2, 30);
commit;
# Switch to connection con1
select a,b from t2 UNION SELECT id, x from t1 FOR UPDATE;
a b
0 0
20 1
30 2
300 300
select * from t2;
b a
0 0
1 20
2 30
select * from t1;
id x
0 0
300 300
# Switch to connection con2
update t2 set a=2 where b = 0;
select * from t2;
b a
0 2
1 20
2 30
update t1 set x=2 where id = 0;
# Switch to connection con1
update t1 set x=1 where id = 0;
select * from t1;
id x
0 1
300 300
commit;
# Switch to connection con2
commit;
# Switch to connection con1
select * from t1;
id x
0 2
300 300
commit;
# Switch to connection default + disconnect con1 and con2
drop table t1, t2;
End of 4.1 tests
set storage_engine=innodb;
drop table if exists a;
drop table if exists A;
create table A (c int);
insert into A (c) values (0);
create table a as select * from A;
drop table A;
drop table if exists a;
set storage_engine=default;
End of 5.0 tests.
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