Re: proposal: doc: simplify examples of dynamic SQL

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От David G. Johnston
Тема Re: proposal: doc: simplify examples of dynamic SQL
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Msg-id CAKFQuwa+_TKmAmNZATs34n95SO+=XfQus41nR7Z7V5AkHto4Cg@mail.gmail.com
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Ответ на Re: proposal: doc: simplify examples of dynamic SQL  (Bruce Momjian <bruce@momjian.us>)
Ответы Re: proposal: doc: simplify examples of dynamic SQL  (Bruce Momjian <bruce@momjian.us>)
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On Friday, March 20, 2015, Bruce Momjian <bruce@momjian.us> wrote:
On Fri, Mar 20, 2015 at 05:50:03PM -0700, David G. Johnston wrote:
> ​I'm not sure that this particular feature of the standard is something we
> should encourage.
>
> Its actually quite useful in this situation, and so maybe the novelty is just
> making me nervous,​ but the only reason I know of this behavior is because I've
> seen a number of posts in just the past couple of years when people
> accidentally used this feature and then were surprised when they didn't get an
> error.  If this stays I would suggest that we take the opportunity to
> cross-reference back to where the syntax is defined so people aren't left
> scratching their heads as to why it works - or why if they remove the newline
> in their own attempt the code suddenly breaks.

Yeah, I am kind on the fence about it, but it is a nice feature,
particulary for PL/pgSQL programs.  I added a mention of the string
concatentation feature --- patch attached, and URL updated.


The third option is to just embed a new line in the string itself.

Execute Format(’...
...', tbl)
USING val

David J.

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