I think you would have to do it something like this, although whether the
SELECT INTO works in an EXECUTE context I am not sure (note, completely
untested code!)
CREATE FUNCTION get_count(text, text) RETURNS int2 AS '
DECLARE
cnt int4;
BEGIN
EXECUTE ''SELECT INTO cnt COUNT(*) FROM table_'' || $1 || '' WHERE key =
'' || $2;
RETURN cnt;
END;'
LANGUAGE 'plpgsql';
> New question:
>
> i have tables like
> table_20041124,
> table_20041125,
> etc...
>
> i'm trying to make function (for example):
> =====================================
> CREATE FUNCTION get_count(text, text)
> RETURNS int2 AS '
> DECLARE
> cnt int4;
> BEGIN
> SELECT INTO cnt COUNT(*)
> FROM table_$1 -- That doesn't work
> WHERE key = $2;
>
> RETURN cnt;
> END;'
> LANGUAGE 'plpgsql';
> =====================================
>
> call this function by:
>
> =====================================
> SELECT get_count("20041124", "something");
> =====================================
>
> string in funstion - FROM table_$1
>
> how could i get a final correct table name here?
>
> Thanx!
>
>
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