pg ANY/SOME ambiguity wrt sql standard?

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От Fabien COELHO
Тема pg ANY/SOME ambiguity wrt sql standard?
Дата
Msg-id Pine.LNX.4.58.0404281456470.28436@sablons.cri.ensmp.fr
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Ответы Re: pg ANY/SOME ambiguity wrt sql standard?  (Fabien COELHO <coelho@cri.ensmp.fr>)
Re: pg ANY/SOME ambiguity wrt sql standard?  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-hackers
I'm looking into adding sql standard aggregates EVERY/ANY/SOME.
It seems to me that there is a syntax ambiguity with ANY and SOME:
CREATE TABLE bla(b BOOL);SELECT TRUE = ANY(b) FROM bla;

Is parsed as an array-operator and there is a semantical error because no
array is provided. Now ANY could be an aggregate function call, and it
should be fine.

However I really cannot see (my usual lack of imagination) how to handle
this from the parser.

Thus I'm afraid that I'll have to rewrite the A_Expr structure into a
FuncCall to 'any' or 'some' somewhere.

Comments? Any better idea?

-- 
Fabien Coelho - coelho@cri.ensmp.fr


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