Hi John,
> O.K. you SQL gurus--
>
> I have a difficult query for you that has me stumped. The table has two
> columns: rowID (MEDIUMINT-but *NOT* AUTO_INCREMENT) and theDate
(DATETIME).
> I need it to find:
>
> 1. The COUNT of REPEATED instances of the rowID in the last month.
>
> - so if there are 5 rows with the same rowID in the last month, it would
> return "4" (I can only seem to get it to return "10" WHERE t1.rowID =
> t2.rowID AND t1.theDate > t1.theDate)
Dunno if it works for you ... but:
why not simply do a COUNT(ROWID) grouped by ROWID and
TheDate month and subtract 1 from the count?
With regards,
Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server.
Upscene Productions
http://www.upscene.com
> 2. The AVERAGE number of REPEATED instances of the rowID per week (Monday
> 00:00:00 through Monday 00:00:00 one week later) in the last month.
>
> If I need to add table columns I certainly can.
>
> THANKS!
>
> - John
>
>
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