Hello,
I have a problem composing a sql-statement for my special needs.
I hope anybody can help me.
This is the situation:
I have 2 tables, a and b as following:
--------------
| a |
--------------
| eid | name |
--------------
------------------
| b |
------------------
| id | gid | eid |
------------------
*) a.eid and b.id are primary keys
*) b.eid points to a.eid entries
Now my wish:
*) b.gid = fixed given value
*) i want all entries from a , which are NOT referenced by any entries
from b.eid where b.gid = fixed given value
Is this possible with only one sql-statement?
-
I have tried over and over, but didn't get a correct sollution.
One of my tries was:
select a.eid from a,b where b.gid = <fixed> and a.eid != b.eid
but it didn't work out.
Any help is welcome! THX
--
greetings - WEMMER Alexander <[EMAIL PROTECTED]>
Telematik Student at the Technical University of Graz, Austria.
https://wemmer.at/
---------------------------------------------------------------------
Before posting, please check:
http://www.mysql.com/manual.php (the manual)
http://lists.mysql.com/ (the list archive)
To request this thread, e-mail <[EMAIL PROTECTED]>
To unsubscribe, e-mail <[EMAIL PROTECTED]>
Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
