Re: SQL-Invoked Procedures for 8.1 - Mailing list pgsql-hackers

From Tom Lane
Subject Re: SQL-Invoked Procedures for 8.1
Date
Msg-id 7918.1097212545@sss.pgh.pa.us
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In response to Re: SQL-Invoked Procedures for 8.1  (Josh Berkus <josh@agliodbs.com>)
Responses Re: SQL-Invoked Procedures for 8.1
List pgsql-hackers
Josh Berkus <josh@agliodbs.com> writes:
> I'll give you an example why not:

> CALL some_sp ( user IS 19, session IS NULL );

> However, Tom, couldn't AS confuse the parser when used to call a named 
> function in a SELECT clause?

I don't think so.  We are talking about
SELECT f(42 AS a, col1 AS b) AS collabel FROM ...

Certainly there's no ambiguity to a person in this: param name AS's are
inside parens, collabel AS's are not.  I believe that bison would deal
with this handily ... but I have to admit I've not actually tried to
make the grammar changes for it.
        regards, tom lane


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