打开CURSOR时我可以使用with子句吗？

Question

我可以在使用游标时使用WITH子句

OPEN CURSOR_NAME FOR 
WITH view1 as (Select v_name from tablename),
view2 as (Select p_name from tablename2)
Select * from view1, view2;

Answer 1

是的，可以在游标中使用with子句。请查看以下示例。

DECLARE
   l_cur sys_refcursor;
   l_val VARCHAR2 (1000);
BEGIN
   DBMS_OUTPUT.ENABLE;

   OPEN l_cur FOR
      WITH tab AS
           (SELECT 'hello'
              FROM DUAL)
      SELECT *
        FROM tab;

   FETCH l_cur
    INTO l_val;

   CLOSE l_cur;

   DBMS_OUTPUT.put_line (l_val);
END;

输出：hello