Martijn Tonies wrote:
>>> What is the exact error message?
>> Here's the latest query:
>> delimiter //
>> create trigger jobposts_control
>> before delete on jobposts for each row
>> declare dummy varchar(255);
>> set @counted = (
>> select count(ad.adsource_id)
>> from adsource ad, jobposts jp
>> where ad.adsource_id = jp.adsource_id
>> and old.jobpost_id = jp.jobpost_id
>> if @counted >= 1 then SET dummy = "Cannot delete this record"; end
>> end //
>> delimiter ;
>> Here's the error message:
>> ERROR: Unknown column 'old.jobpost_id' in 'where clause'
> Works fine here (although with different tables).
> Just for fun and giggles, have you tried OLD. (uppercase?)
Okay . . . I tried OLD.
create trigger jobposts_control
before delete on jobposts for each row
declare dummy varchar(255);
set @counted = (
from adsource ad, jobposts jp
where ad.adsource_id = jp.adsource_id
and OLD.jobpost_id = jp.jobpost_id
if @counted >= 1 then SET dummy = 'Cannot delete this record'; end if;
Now I just have this error message:
ERROR: You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the right
syntax to use near 'end //
delimiter' at line 1
Query = end
> As a complete sidenote:
> It's better to write your JOINs with a JOIN clause and to put your
> strings inside single quotes as per SQL standard, double quotes are
> really for object names.
Right . . . I'll get the JOIN clause figured out after I figure out
what's causing the above error message.
Lola J. Lee Beno - ColdFusion Programmer/Web Designer for Hire
http://www.lolajl.net/resume | Blog at http://www.lolajl.net/blog/
"In rivers, the water that you touch is the last of what has passed
and the first of that which comes; so with present time." - Leonardo da Vinci (1452-1519)