Re: Proposal: plpgsql - "for in array" statement

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Proposal: plpgsql - "for in array" statement
Date: 2010-09-28 20:19:32
Message-ID: 28182.1285705172@sss.pgh.pa.us
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Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> writes:
> 2010/9/28 Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>:
>> But I guess you could get around that if you had to by putting the ARRAY
>> expression inside parens, and it would be a pretty darn unusual case
>> anyway. So this is probably the best choice.

> I don't agree - There isn't reason for complicating proposed syntax.

Yes, there is. The syntax you propose is flat out ambiguous: there are
two possible legal interpretations of some commands. That's not
acceptable, especially not when it's so easily fixed.

regards, tom lane

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