Re: array_lower /array_prepend doubt

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От Tom Lane
Тема Re: array_lower /array_prepend doubt
Дата
Msg-id 2597.1074708698@sss.pgh.pa.us
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Ответ на Re: array_lower /array_prepend doubt  (Joe Conway <mail@joeconway.com>)
Ответы Re: array_lower /array_prepend doubt
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Joe Conway <mail@joeconway.com> writes:
> Tom Lane wrote:
>> Because array_prepend keeps the subscripts of the existing array
>> elements the same.  This was discussed during development of the
>> code, but I don't see anything in the documentation that mentions it.

> It could perhaps be added to the "Functions and Operators" page for 
> arrays, but it is mentioned here:
> http://www.postgresql.org/docs/current/static/arrays.html#AEN5183

Ah.  I was looking at the mentions of array_prepend() ... but of course
the manual also says that you should use the || operator instead ...
so I guess this mention is sufficient.

The other point about pg_dump failing to correctly restore arrays with
nondefault lower bounds is a good one, though.  We need to think about
how to fix that.
        regards, tom lane


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