Ken Tozier <[EMAIL PROTECTED]> writes: > When I add the OR clause things go haywire:
> SELECT a.paginator, a.doc_name, (b.time - pm_events.time) as > elapsed_time FROM pm_events as a, pm_events as b > WHERE a.event_code='pmcd' > OR a.event_code='pmop' > AND b.event_code='pmcl' > AND a.doc_name=b.doc_name > AND a.paginator=b.paginator > AND a.time < b.time I think you need some parentheses, or at least a bit of thought about what the OR is binding to. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster