oracle-function 练习

/**scm_iss.test_imti_fun2*带有输入参数的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*带有输入输出参数的Function*/CREATE OR REPLACE FUNCTION TEST_IMTI_FUN3(P_NO IN NUMBER ,P_NAME OUT VARCHAR2) RETURN VARCHAR2 ISBEGIN--调用输入输出参数的存储过程SCM_ISS.TEST_IMTI_PRO3(P_NO,P_NAME);RETURN P_NAME;END;--测试调用DECLAREA VARCHAR2(200); --接受输出参数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;