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Bug#27563: Stored functions and triggers wasn't throwing an error when killed.

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If a stored function or a trigger was killed it had aborted but no error
was thrown. This allows the caller statement to continue without a notice.
This may lead to a wrong data being inserted/updated to/deleted as in such
cases the correct result of a stored function isn't guaranteed. In the case
of triggers it allows the caller statement to ignore kill signal and to
waste time because of re-evaluation of triggers that always will fail
because thd->killed flag is still on.

Now the Item_func_sp::execute() and the sp_head::execute_trigger() functions
check whether a function or a trigger were killed during execution and
throws an appropriate error if so.
Now the fill_record() function stops filling record if an error was reported
through thd->net.report_error.
This commit is contained in:
evgen@moonbone.local
2007-05-23 23:24:16 +04:00
parent 835189cb85
commit d1d58b5f1d
5 changed files with 220 additions and 1 deletions
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82
mysql-test/r/kill.result
View File

@ -41,3 +41,85 @@ select 1;
select RELEASE_LOCK("a");
RELEASE_LOCK("a")
1
create table t1(f1 int);
create function bug27563() returns int(11)
deterministic
begin
declare continue handler for sqlstate '70100' set @a:= 'killed';
declare continue handler for sqlexception set @a:= 'exception';
set @a= get_lock("lock27563", 10);
return 1;
end|
select get_lock("lock27563",10);
get_lock("lock27563",10)
1
insert into t1 values (bug27563());
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
select * from t1;
f1
insert into t1 values(0);
update t1 set f1= bug27563();
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
select * from t1;
f1
0
insert into t1 values(1);
delete from t1 where bug27563() is null;
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
select * from t1;
f1
0
1
select * from t1 where f1= bug27563();
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
create procedure proc27563()
begin
declare continue handler for sqlstate '70100' set @a:= 'killed';
declare continue handler for sqlexception set @a:= 'exception';
select get_lock("lock27563",10);
select "shouldn't be selected";
end|
call proc27563();
get_lock("lock27563",10)
NULL
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
create table t2 (f2 int);
create trigger trg27563 before insert on t1 for each row
begin
declare continue handler for sqlstate '70100' set @a:= 'killed';
declare continue handler for sqlexception set @a:= 'exception';
set @a:= get_lock("lock27563",10);
insert into t2 values(1);
end|
insert into t1 values(2),(3);
ERROR 70100: Query execution was interrupted
select @a;
@a
NULL
select * from t1;
f1
0
1
select * from t2;
f2
select release_lock("lock27563");
release_lock("lock27563")
1
drop table t1, t2;
drop function bug27563;
drop procedure proc27563;