oracle-function 练习

/*
*scm_iss.test_imti_fun2
*带有输入參数的Function
*/
CREATE OR REPLACE FUNCTION TEST_IMTI_FUN2(P_NO IN NUMBER) RETURN VARCHAR2 IS
  P_IMTI_NAME VARCHAR2(200);
  P_IMTI_DESC VARCHAR2(200);
  P_RETURN    VARCHAR2(200);
BEGIN
  --SELECT I.IMTI_NAME INTO P_IMTI_NAME FROM SCM_ISS.T_IMTI_TEST I WHERE I.IMTI_NO = P_NO;

  SELECT I.IMTI_DESC, I.IMTI_NAME
    INTO P_IMTI_DESC, P_IMTI_NAME
    FROM SCM_ISS.T_IMTI_TEST I
   WHERE I.IMTI_NO = P_NO;
  --P_IMTI_DESC := P_IMTI_NAME;
  P_RETURN := P_IMTI_NAME || ':' || P_IMTI_DESC;
  RETURN P_RETURN;
EXCEPTION
  WHEN OTHERS THEN
    DBMS_OUTPUT.PUT_LINE('EXCEPTION:'||SQLERRM);
END TEST_IMTI_FUN2;

/*
*scm_iss.test_imti_fun3
*带有输入输出參数的Function
*/

CREATE OR REPLACE FUNCTION TEST_IMTI_FUN3(P_NO IN NUMBER ,P_NAME OUT VARCHAR2) RETURN VARCHAR2 IS

BEGIN
--调用输入输出參数的存储过程
SCM_ISS.TEST_IMTI_PRO3(P_NO,P_NAME);

RETURN P_NAME;
END;

--測试调用
DECLARE
A VARCHAR2(200); --接受输出參数
B VARCHAR2(200);

BEGIN
  B := scm_iss.TEST_IMTI_FUN3(1005,A);
  dbms_output.put_line( 'B 值:' || B );

  dbms_output.put_line( 'A 值:' || A);

END;