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UNION not allowed in sub-selects?

From: "Oliver Elphick" <olly(at)lfix(dot)co(dot)uk>
To: pgsql-hackers(at)postgresql(dot)org
Subject: UNION not allowed in sub-selects?
Date: 1999-11-28 19:50:55
Message-ID: 199911281950.TAA10719@linda.lfix.co.uk (view raw or flat)
Thread:
Lists: pgsql-hackers
In 6.5.3, it seems that UNION is not allowed inside a sub-select:

bray=> select p.id, p.name, a.town from person* as p, address as a
bray=> where p.id in
bray-> (select id from customer union select id from supplier);
ERROR:  parser: parse error at or near "union"

The same applies to EXCEPT and INTERSECT.

Is this a permanent feature, an oversight, or something already on the TODO
list?


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Oliver Elphick                                Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight                              http://www.lfix.co.uk/oliver
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