Re: Using overlaps()

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Andrew Perrin - Demography <aperrin(at)demog(dot)berkeley(dot)edu>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: Using overlaps()
Date: 2000-04-11 00:44:01
Message-ID: 200004110044.UAA16523@candle.pha.pa.us
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Perhaps only 7.0beta. Sorry

> 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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