Interval & check clause

From: "Bruno BAGUETTE" <pgsql-ml(at)baguette(dot)net>
To: <pgsql-general(at)postgresql(dot)org>
Subject: Interval & check clause
Date: 2004-03-29 12:30:14
Message-ID: !~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAATBuXKOMvlkWzD3KJN6FWLMKAAAAQAAAAP1j4kFP0/Eyt53EmaR/kjwEAAAAA@baguette.net
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Hello,

It may be a stupid question, but I'm looking to set a check clause in order
to be sure that a INTERVAL field is 00:00:00 or higher, but NOT negatives
values.

How can I set that ?

Thanks in advance :-)

-------------------------------------
Bruno BAGUETTE - pgsql-ml(at)baguette(dot)net

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