Re: ROW or RANGE not optional in range specification

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От Tom Lane
Тема Re: ROW or RANGE not optional in range specification
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Msg-id 14899.1427845935@sss.pgh.pa.us
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Ответ на ROW or RANGE not optional in range specification  ("David G. Johnston" <david.g.johnston@gmail.com>)
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"David G. Johnston" <david.g.johnston@gmail.com> writes:
> Either I'm confused about the syntax description rules or the documentation
> for this aspect of window definitions is wrong.

> The expression:

> [ RANGE | ROWS ]  BETWEEN frame_start AND frame_end

> means that the specification of range or rows is optional - but that
> doesn't appear to be the case...

> The documentation should read:

> { RANGE | ROWS } BETWEEN frame_start AND frame_end

Yup, you're right.  Thanks for spotting that!

            regards, tom lane


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