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Allow optimzation of multi-table-update also for InnoDB tables

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MEMORY is alias for HEAP for CREATE TABLE ... TYPE=HEAP
Fixed bug in multi-table-update where a row could be updated several times
This commit is contained in:
monty@narttu.mysql.fi
2003-03-19 00:45:44 +02:00
parent c2fa342d53
commit 386411b5ba
13 changed files with 313 additions and 48 deletions
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64
mysql-test/r/multi_update.result
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@ -246,3 +246,67 @@ INSERT INTO t3 VALUES (1,'jedan'),(2,'dva');
update t1,t2 set t1.naziv="aaaa" where t1.broj=t2.broj;
update t1,t2,t3 set t1.naziv="bbbb", t2.naziv="aaaa" where t1.broj=t2.broj and t2.broj=t3.broj;
drop table if exists t1,t2,t3;
CREATE TABLE t1 (a int not null primary key, b int not null, key (b));
CREATE TABLE t2 (a int not null primary key, b int not null, key (b));
INSERT INTO t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
INSERT INTO t2 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8),(9,9);
update t1,t2 set t1.a=t1.a+100;
select * from t1;
a b
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update t1,t2 set t1.a=t1.a+100 where t1.a=101;
select * from t1;
a b
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update t1,t2 set t1.b=t1.b+10 where t1.b=2;
select * from t1;
a b
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update t1,t2 set t1.b=t1.b+2,t2.b=t1.b where t1.b between 3 and 5;
select * from t1;
a b
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select * from t2;
a b
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9 3
drop table t1,t2;