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removed limit for "FOR UPDATE" and "IN SHARE MODE" (now thay allowed for non-simple selects and applyed to current select)

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fix for using subselects with update
test of locking for non-simple queries
(SCRUM?)
This commit is contained in:
bell@sanja.is.com.ua
2002-11-25 13:44:47 +02:00
parent c8d8367021
commit 0c546b6567
3 changed files with 155 additions and 6 deletions
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76
mysql-test/r/innodb-non-simple.result Normal file
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@ -0,0 +1,76 @@
drop table if exists t1, t2;
create table t1 (id integer, x integer) type=INNODB;
create table t2 (b integer, a integer) type=INNODB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 10), (1, 20), (2, 30);
set autocommit=0;
select * from t2;
b a
0 10
1 20
2 30
update t2 set a=100 where b=(SELECT x from t1 where id = b FOR UPDATE);
select * from t2;
b a
0 100
1 20
2 30
select * from t1;
id x
0 0
300 300
set autocommit=0;
update t1 set x=2 where id = 0;
update t1 set x=1 where id = 0;
select * from t1;
id x
0 1
300 300
commit;
commit;
select * from t1;
id x
0 2
300 300
commit;
drop table t1, t2;
create table t1 (id integer, x integer) type=INNODB;
create table t2 (b integer, a integer) type=INNODB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 0), (1, 20), (2, 30);
commit;
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
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;
update t1 set x=1 where id = 0;
select * from t1;
id x
0 1
300 300
commit;
commit;
select * from t1;
id x
0 2
300 300
commit;
drop table t1, t2;

76
mysql-test/t/innodb-non-simple.test Normal file
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-- source include/have_innodb.inc
connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
drop table if exists t1, t2;
#
# Testing of FOR UPDATE
#
connection con1;
create table t1 (id integer, x integer) type=INNODB;
create table t2 (b integer, a integer) type=INNODB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 10), (1, 20), (2, 30);
set autocommit=0;
select * from t2;
update t2 set a=100 where b=(SELECT x from t1 where id = b FOR UPDATE);
select * from t2;
select * from t1;
connection con2;
set autocommit=0;
# The following query should hang because con1 is locking the page
--send
update t1 set x=2 where id = 0;
--sleep 2;
connection con1;
update t1 set x=1 where id = 0;
select * from t1;
commit;
connection con2;
reap;
commit;
connection con1;
select * from t1;
commit;
drop table t1, t2;
create table t1 (id integer, x integer) type=INNODB;
create table t2 (b integer, a integer) type=INNODB;
insert into t1 values(0, 0), (300, 300);
insert into t2 values(0, 0), (1, 20), (2, 30);
commit;
connection con1;
select a,b from t2 UNION SELECT id, x from t1 FOR UPDATE;
select * from t2;
select * from t1;
connection con2;
# The following query should hang because con1 is locking the page
update t2 set a=2 where b = 0;
select * from t2;
--send
update t1 set x=2 where id = 0;
--sleep 2;
connection con1;
update t1 set x=1 where id = 0;
select * from t1;
commit;
connection con2;
reap;
commit;
connection con1;
select * from t1;
commit;
drop table t1, t2;