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Benjamin Smith wrote: > Given the tables defined below, what's the easiest way to check for schedule > conflicts? Assuming you don't count more than once things with the same id, start, and finish: SELECT COUNT(DISTINCT (s1.event_id||s1.start||s1.finish)) FROM sched s1, sched s2 WHERE s1.date = s2.date AND s1.start >= s2.start AND s2.finish <= s2.finish AND NOT s1.ctid = s2.ctid Add "AND s1.date = $date" as needed. - -- Greg Sabino Mullane [EMAIL PROTECTED] PGP Key: 0x14964AC8 200503140639 http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8 -----BEGIN PGP SIGNATURE----- iD8DBQFCNXgTvJuQZxSWSsgRAlBmAKC7hj8XzHzS7srqfgdSGOZiCfvtDQCfWM22 VXMkQB7IzEdTKjqpcmWVdaM= =hFiy -----END PGP SIGNATURE----- ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])
