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BUG#12618: Removing fake locking

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This commit is contained in:
lars@mysql.com
2005-10-10 15:10:14 +02:00
parent e8f291f52b
commit 998380521f
4 changed files with 151 additions and 85 deletions
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72
mysql-test/r/rpl_multi_update3.result
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@@ -122,3 +122,75 @@ SELECT * FROM t1;
i j x y z
1 2 23 24 71
DROP TABLE t1, t2, t3;
DROP TABLE IF EXISTS t1;
Warnings:
Note 1051 Unknown table 't1'
DROP TABLE IF EXISTS t2;
Warnings:
Note 1051 Unknown table 't2'
CREATE TABLE t1 (
idp int(11) NOT NULL default '0',
idpro int(11) default NULL,
price decimal(19,4) default NULL,
PRIMARY KEY (idp)
);
CREATE TABLE t2 (
idpro int(11) NOT NULL default '0',
price decimal(19,4) default NULL,
nbprice int(11) default NULL,
PRIMARY KEY (idpro)
);
INSERT INTO t1 VALUES
(1,1,'3.0000'),
(2,2,'1.0000'),
(3,1,'1.0000'),
(4,1,'4.0000'),
(5,3,'2.0000'),
(6,2,'4.0000');
INSERT INTO t2 VALUES
(1,'0.0000',0),
(2,'0.0000',0),
(3,'0.0000',0);
update
t2
join
( select idpro, min(price) as min_price, count(*) as nbr_price
from t1
where idpro>0 and price>0
group by idpro
) as table_price
on t2.idpro = table_price.idpro
set t2.price = table_price.min_price,
t2.nbprice = table_price.nbr_price;
select "-- MASTER AFTER JOIN --" as "";
-- MASTER AFTER JOIN --
select * from t1;
idp idpro price
1 1 3.0000
2 2 1.0000
3 1 1.0000
4 1 4.0000
5 3 2.0000
6 2 4.0000
select * from t2;
idpro price nbprice
1 1.0000 3
2 1.0000 2
3 2.0000 1
select "-- SLAVE AFTER JOIN --" as "";
-- SLAVE AFTER JOIN --
select * from t1;
idp idpro price
1 1 3.0000
2 2 1.0000
3 1 1.0000
4 1 4.0000
5 3 2.0000
6 2 4.0000
select * from t2;
idpro price nbprice
1 1.0000 3
2 1.0000 2
3 2.0000 1