| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | "pgsql-docs(at)postgresql(dot)org" <pgsql-docs(at)postgresql(dot)org> |
| Subject: | Re: ROW or RANGE not optional in range specification |
| Date: | 2015-03-31 23:52:15 |
| Message-ID: | 14899.1427845935@sss.pgh.pa.us |
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| Lists: | pgsql-docs |
"David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)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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