Re: WARNING: nonstandard use of escape in a string literal

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От John R Pierce
Тема Re: WARNING: nonstandard use of escape in a string literal
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Msg-id 4B3287FA.2040502@hogranch.com
обсуждение исходный текст
Ответ на Re: WARNING: nonstandard use of escape in a string literal  (Bill Moran <wmoran@potentialtech.com>)
Ответы Re: WARNING: nonstandard use of escape in a string literal  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-general
Bill Moran wrote:
> You need to spend some quality time with the documentation.  Seriously,
> the issue _is_ confusing, but the docs explain it all, if you take the
> time to read all of it.
>
> To directly answer your question, \s is not a recognized escape sequence,
> so PG passes it unchanged.
>
> However, if you were trying to pass a \f, you would need to escape the \,
> like this '\\f', otherwise the \f would be converted to a form feed before
> LIKE ever saw it.
>

and, naturally, this gets even more complicated and confusing when the
string is a literal in a C/Perl/etc program that has its OWN escaping
going on.



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