Re: Search for underscore w/ LIKE

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От Bruce Momjian
Тема Re: Search for underscore w/ LIKE
Дата
Msg-id 200007071824.OAA01965@candle.pha.pa.us
обсуждение исходный текст
Ответ на Re: Search for underscore w/ LIKE  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-sql
> I wrote:
> > Similarly, '\\%' would be the way to match a literal %.  You can
> > actually backslash-quote any single character this way in LIKE,
> > but % and _ are the only ones where it makes a difference.
> 
> Er, check that.  Backslash itself also needs quoting in LIKE.
> 
> Exercise for the student: if you need to match a literal backslash
> in a LIKE pattern, how many backslashes do you have to write in your
> query?

I will fix the book.  Seems I didn't do the test properly.


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