Можете да използвате пакета DBMS_SQL. Това предоставя алтернативен начин за изпълнение на динамичен SQL. Може би е малко по-тромаво за използване, но може да бъде по-гъвкаво, особено с различен брой параметри на свързване.
Ето как можете да го използвате (предупреждение:не съм тествал това):
FUNCTION player_search (
pName IN VARCHAR2,
pHeight IN NUMBER,
pTeam IN VARCHAR2
) RETURN SYS_REFCURSOR
IS
cursor_name INTEGER;
ignore INTEGER;
id_var MyTable.ID%TYPE;
name_var MyTable.Name%TYPE;
height_var MyTable.Height%TYPE;
team_var MyTable.Team%TYPE;
BEGIN
-- Put together SQLQuery here...
-- Open the cursor and parse the query
cursor_name := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(cursor_name, SQLQuery, DBMS_SQL.NATIVE);
-- Define the columns that the query returns.
-- (The last number for columns 2 and 4 is the size of the
-- VARCHAR2 columns. Feel free to change them.)
DBMS_SQL.DEFINE_COLUMN(cursor_name, 1, id_var);
DBMS_SQL.DEFINE_COLUMN(cursor_name, 2, name_var, 30);
DBMS_SQL.DEFINE_COLUMN(cursor_name, 3, height_var);
DBMS_SQL.DEFINE_COLUMN(cursor_name, 4, team_var, 30);
-- Add bind variables depending on whether they were added to
-- the query.
IF pName IS NOT NULL THEN
DBMS_SQL.BIND_VARIABLE(cursor_name, ':pName', pName);
END IF;
IF pHeight > 0 THEN
DBMS_SQL.BIND_VARIABLE(cursor_name, ':pHeight', pHeight);
END IF;
IF pTeam IS NOT NULL THEN
DBMS_SQL.BIND_VARIABLE(cursor_name, ':pTeam', pTeam);
END IF;
-- Run the query.
-- (The return value of DBMS_SQL.EXECUTE for SELECT queries is undefined,
-- so we must ignore it.)
ignore := DBMS_SQL.EXECUTE(cursor_name);
-- Convert the DBMS_SQL cursor into a PL/SQL REF CURSOR.
RETURN DBMS_SQL.TO_REFCURSOR(cursor_name);
EXCEPTION
WHEN OTHERS THEN
-- Ensure that the cursor is closed.
IF DBMS_SQL.IS_OPEN(cursor_name) THEN
DBMS_SQL.CLOSE_CURSOR(cursor_name);
END IF;
RAISE;
END;
(Забележка:DBMS_SQL.TO_REFCURSOR
е ново в Oracle 11g.)