mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
6b0b4734d9
New more SP-locking friendly approach to handling locks in multi-update. Now we mark all tables of multi-update as needing write lock at parsing stage and if possible downgrade lock at execution stage (For its work SP-locking mechanism needs to know all lock types right after parsing stage).
43 lines
939 B
Plaintext
43 lines
939 B
Plaintext
use test;
|
|
drop table if exists t1;
|
|
create table t1 (s1 int, s2 int, s3 int);
|
|
create procedure bug4934()
|
|
begin
|
|
insert into t1 values (1,0,1);
|
|
end//
|
|
use test;
|
|
call bug4934();
|
|
select * from t1;
|
|
s1 s2 s3
|
|
1 0 1
|
|
drop table t1;
|
|
create table t1 (s1 int, s2 int, s3 int);
|
|
drop procedure bug4934;
|
|
create procedure bug4934()
|
|
begin
|
|
end//
|
|
select * from t1;
|
|
s1 s2 s3
|
|
call bug4934();
|
|
select * from t1;
|
|
s1 s2 s3
|
|
drop table t1;
|
|
drop procedure bug4934;
|
|
drop procedure if exists bug9486;
|
|
drop table if exists t1, t2;
|
|
create table t1 (id1 int, val int);
|
|
create table t2 (id2 int);
|
|
create procedure bug9486()
|
|
update t1, t2 set val= 1 where id1=id2;
|
|
call bug9486();
|
|
lock tables t2 write;
|
|
call bug9486();
|
|
show processlist;
|
|
Id User Host db Command Time State Info
|
|
# root localhost test Sleep # NULL
|
|
# root localhost test Query # Locked call bug9486()
|
|
# root localhost test Query # NULL show processlist
|
|
unlock tables;
|
|
drop procedure bug9486;
|
|
drop table t1, t2;
|