QUICK HELP, two selects, maybe nested.

["Corey Kaye" <kayec@xxxxxxxxx>]

Looking though the docs. MySQL does not support nested selects but i'm looking for a way to speed up my PHP.

This is what i have:

CREATE TABLE departmentuser (
  userid int(10) unsigned zerofill default NULL,
  departmentid int(10) unsigned zerofill default NULL,
  KEY userid_departmentid(userid,departmentid)
);

What i need to do is select out of this table all the userid's that have a departmentid of 368 AND 142.

What is the best way to do this?

Currently i'm selecting all the users with 368 and running through a loop and checking to see if the returned list of userid also have 142.  This takes about 20sec as this is a BIG list !

PLEASE HELP !!!!

PS I've never done it but can  you use IF statements in MySQL ?


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