On Tue, Sep 28, 2010 at 4:39 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> 2010/9/28 Tom Lane <tgl@sss.pgh.pa.us>:
>> Pavel Stehule <pavel.stehule@gmail.com> writes:
>>> 2010/9/28 Tom Lane <tgl@sss.pgh.pa.us>:
>>>> As an example, is this a for-in-query or a
>>>> for-in-array?
>>>>
>>>> FOR v IN (SELECT arraycol FROM tab) LOOP ...
>>
>>> This is a subquery - so it is a for-in-array - should return one row
>>> with one column.
>>
>> That's not obvious at all. It's legal right now to write that, and it
>> will be interpreted as for-in-query.
>
> but it has not a sense.
It has a very fine sense. It's completely obvious to me what that
means, and you're proposing to break it. In a word: no.
--
Robert Haas
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