On Mar 4, 2006, at 14:17 , Tom Lane wrote:

The UNIQUE/PRIMARY KEY syntax only allows bare column names, per the SQL standard. While there's not any technical reason why we couldn't extend that syntax, there's a pretty large fear factor involved: we could find
ourselves behind the spec-compliance eight-ball if the SQL committee
exercises their prerogative to extend the syntax in some other
direction.

Cool. Thanks for the explanation.

Michael Glaesemann
grzm myrealbox com




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