Hi there,
Having standard_conforming_strings = 'on', I build the following scenario.
I request SELECT replace( 'a\b', '\', '\\' ), which get me the result:
replace
---------a\\b
I'd like to build a function that give me the same result, as:
CREATE OR REPLACE FUNCTION "test"(s varchar) RETURNS varchar AS
$BODY$
BEGINRETURN replace( s, '\', '\\' );
END;
$BODY$ LANGUAGE 'plpgsql' VOLATILE;
But I rises the error:
ERROR: unterminated string
SQL state: 42804
Context: compile of PL/pgSQL function "test" near line 3
Ok, I suppose the function is not aware of standard_conforming_strings =
'on', so I have to change \ with \\. I make the following function:
CREATE OR REPLACE FUNCTION "test"(s varchar) RETURNS varchar AS $BODY$
BEGINRETURN replace( s, '\\', '\\\\' );
END;
$BODY$ LANGUAGE 'plpgsql' VOLATILE;
The function is created without errors.
But this is useless because SELECT test( 'a\b' ); returns a\b, and SELECT
test( 'a\\b' ); returns a\\\\b.
How can I get my desired function that means when I call test( 'a\b' ) it
will return 'a\\b' ?
TIA,
Sabin
