From: | Andrew Perrin - Demography <aperrin(at)demog(dot)berkeley(dot)edu> |
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To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Using overlaps() |
Date: | 2000-04-10 23:45:22 |
Message-ID: | Pine.LNX.4.10.10004101643440.10219-100000@famine.DEMOG.Berkeley.EDU |
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Lists: | pgsql-sql |
Greetings.
The Postgres Book implies that there is a function overlaps() that takes
two pairs of dates and returns true if they overlap. However, I get an
error trying to use it:
demogdata=> select event_id from event_detail where overlaps
(date_effective, date_expires, '1-mar-2000'::datetime , now()::datetime);
ERROR: No such function 'overlaps' with the specified attributes
demogdata=> select event_id from event_detail where (date_effective,
date_expires) overlaps ('1-mar-2000'::date , now()::date);
ERROR: parser: parse error at or near "overlaps"
Any advice?
Thanks.
---------------------------------------------------------------------
Andrew J. Perrin - aperrin(at)demog(dot)berkeley(dot)edu - NT/Unix Admin/Support
Department of Demography - University of California at Berkeley
2232 Piedmont Avenue #2120 - Berkeley, California, 94720-2120 USA
http://demog.berkeley.edu/~aperrin --------------------------SEIU1199
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