Gabor Szilagyi wrote:
>I am trying to pick out rows from the database which contains a
>particular string.
>
>I am using the following
>
>SELECT * FROM in_table WHERE n_from ~* '.*nb*.
>
>(Well actually a bunch of this condition is AND/OR -ed together)
>
>My trouble is this: If I enter only a two character string as above,
>it will not only matches string containing "nb" but all those which
>contains the letter "n".
I think you are slightly confused about how pattern-matching works.
Your pattern match says "0-many characters followed by `n' followed by
0-many `b's". That is why `n' alone matches it.
If you simply want any string containing `nb' (case-insensitive)
use "n_from ~* 'nb'". You don't have to say anything at all about
the parts of the string you are not interested in.
--
Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight http://www.lfix.co.uk/oliver
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