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Constraint Syntax Question - Mailing list pgsql-sql

From	Adam Sherman
Subject	Constraint Syntax Question
Date	May 11, 2003 21:21:52
Msg-id	7380000.1052691474@saturn Whole thread Raw
Responses	Re: Constraint Syntax Question (Peter Childs <Blue.Dragon@blueyonder.co.uk>) Re: Constraint Syntax Question (Peter and Sarah Childs <peterandsarah@blueyonder.co.uk>)
List	pgsql-sql

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I have a many-to-many relationship between A & B where a B *must* relate to 
at least 1 A but an A may have zero Bs.

How do add this using an ALTER TABLE statement?

Thanks,

A.

--
Adam Sherman
Tritus CG Inc.
http://www.tritus.ca/
+1 (613) 797-6819

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From: Mathieu Arnold
Date: 11 May 2003, 17:53:32
Subject: Re: sub select performance

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Date: 12 May 2003, 00:05:23
Subject: Re: sub select performance

Constraint Syntax Question - Mailing list pgsql-sql

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