Re: proposal or just idea for psql - show first N rows from relation backslash statement

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От Ian Lawrence Barwick
Тема Re: proposal or just idea for psql - show first N rows from relation backslash statement
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Msg-id CAB8KJ=jygrAPxwtOH9S3ED+6m9LdsZLWZiOGg51U4hzBiG=JzQ@mail.gmail.com
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Ответ на Re: proposal or just idea for psql - show first N rows from relation backslash statement  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: proposal or just idea for psql - show first N rows from relation backslash statement  (Tom Lane <tgl@sss.pgh.pa.us>)
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2013/2/14 Tom Lane <tgl@sss.pgh.pa.us>:
> Stephen Frost <sfrost@snowman.net> writes:
>> * Pavel Stehule (pavel.stehule@gmail.com) wrote:
>>> SELECT * FROM some_relation LIMIT 10
>>>
>>> what do you thinking about creating special statement for this purpose?
>
>> I'd rather extend TABLE to support a limit clause or something.
>
> Can't you pretty much do this already in psql with FETCH_COUNT?  I see
> no good reason to invent more SQL syntax.

Doesn't that just split up the retrieval of the result set into blocks of
FETCH_COUNT rows, i.e. does not limit the result set?

Personally I set commonly-used queries as a psql variable, though
what Pavel suggests sounds useful and AFAICT is not additional SQL
syntax, just (yet another) psql slash command.

Ian Barwick



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