写了个oracle函数,保存一下

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sql 代码

CREATE OR REPLACE FUNCTION f_check_assert (paper_real_id IN VARCHAR2)
   RETURN NUMBER
IS
   CURSOR csr_check
   IS
      SELECT SUM (ca.check_num)
        FROM t_capital_asserts ca
       WHERE EXISTS (
                SELECT     'X'
                      FROM t_real tr
                     WHERE tr.real_id != 0
                       AND tr.status = 1
                       AND tr.real_id = ca.real_id
                START WITH tr.real_id = paper_real_id
                CONNECT BY PRIOR tr.real_id = tr.parent_id);

   v_check   NUMBER;
BEGIN
   OPEN csr_check;

   FETCH csr_check INTO v_check;

   CLOSE csr_check;

   RETURN v_check;
EXCEPTION
   WHEN OTHERS
   THEN
      DBMS_OUTPUT.put_line (SQLERRM);
      RETURN (NULL);
END;
/

由于类别有上下级关系,当求其中某一类及其下属类的帐面数(检查数)之和时,用SQL有点麻烦,就写了个函数.