On Mon, 30 Apr 2007, Brent Wood wrote:
If I'm following this correctly, then interval & extract timepart can be used to provide all the required functionality:
Thanks, Brent. Your suggestions complete the approach I was considering. There is no need for real-time response, to checking after each shift or day -- or other time period -- will be sufficient. I wonder if a workweek/holiday calendar table for PostgreSQL already exists. If not I need to track down the procedure for creating one as Joe Celko references such a calendar in his books. I think that any schema that has temporal components needs such a table. Rich -- Richard B. Shepard, Ph.D. | The Environmental Permitting Applied Ecosystem Services, Inc. | Accelerator(TM) <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863
