Just for clarity: In the documentation
(http://www.postgresql.org/docs/8.4/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP)
is mentioned "Flag g causes the function to find each match in the
string, not only the first one, and return a row for each such match. "
So in your example it was only matching \r so A\n\tB was returned
Cheers,
Bastiaan
Osvaldo Kussama wrote:
> 2010/2/27 <seiliki@so-net.net.tw>:
>
>> Hi!
>>
>> I am trying to replace characters '\r', '\n', or '\t' with space character ' '. As an example, I want string
"A\t\n\rB"becomes "AB". The following statement seems to be not working. What mistake have I made?
>>
>> TIA
>>
>> CN
>> ========
>>
>> select regexp_replace(E'A\r\n\tB',E'[\r\n\t]',' ');
>> regexp_replace
>> ----------------
>> A
>> B
>> (1 row)
>>
>>
>
>
> Try:
> select regexp_replace(E'A\r\n\tB',E'[\r\n\t]',' ','g');
>
> Osvaldo
>
>