Wells Oliver <wells.oliver@xxxxxxxxx> writes: > I am trying to create a plpgsql function which accepts a jsonb object as > its parameter. > This jsonb can have up to three keys, and I am trying to build out the > dynamic SQL like this. I want to be able to pass a variable number of > params to the RETURN QUERY EXECUTE ... USING ... because it can be 0 params > in the JSONB object, or one, or two. > What's the missing piece here? How can I adjust my USING to accomplish this? I think your USING is probably fine. But you made all the SQL fragments refer to $1: > begin > SQLSTRING := 'SELECT * FROM mytable WHERE true'; > if args->>'col1' is not null then > SQLSTRING := SQLSTRING || ' AND col1 = $1'; > end if; > if args->>'col2' is not null then > SQLSTRING := SQLSTRING || ' AND col2 = $1'; > end if; > if args->>'col3' is not null then > SQLSTRING := SQLSTRING || ' AND col3 = $1'; > end if; Of course those need to be $1, $2, $3. regards, tom lane
