无法从触发器调用存储过程

时间:2014-09-22 00:00:30

标签: sql oracle stored-procedures oracle11g

        CREATE OR REPLACE PROCEDURE UPDATE_AGE_VALUES
        IS
        cursor_ssn_number tbl_Patient.ssn_number%type;
        cursor_patient_age tbl_Patient.patient_age%type;    
        age1 tbl_Patient.patient_age%type;
        age2 tbl_Patient.patient_age%type;
        age3 tbl_Patient.patient_age%type;
        ssn_number1 tbl_Patient.ssn_number%type;
        ssn_number2 tbl_Patient.ssn_number%type;
        ssn_number3 tbl_Patient.ssn_number%type;
        average number:=0;
        i number:=1;
        CURSOR cursor_tbl_Patient IS
        SELECT ssn_number,patient_age FROM tbl_Patient ORDER BY patient_age ASC;
        BEGIN
        OPEN cursor_tbl_Patient;
        LOOP
            FETCH cursor_tbl_Patient into cursor_ssn_number,cursor_patient_age;
            EXIT WHEN cursor_tbl_Patient%NOTFOUND;
            IF i=1 THEN
                age1:=cursor_patient_age;
                ssn_number1:=cursor_ssn_number;
                i:=i+1;
            ELSIF i=2 THEN
                age2:=cursor_patient_age;
                ssn_number2:=cursor_ssn_number;
                i:=i+1;
            ELSIF i=3 THEN
                age3:=cursor_patient_age;
                ssn_number3:=cursor_ssn_number;
                average:=(age1+age2+age3)/3;
                UPDATE tbl_Patient SET patient_age=average where ssn_number IN (ssn_number1,ssn_number2,ssn_number3);
                i:=1;
                average:=0;
                commit;
            END IF;
        END LOOP;
        CLOSE cursor_tbl_Patient;
        END;
        /


        CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES 
        AFTER INSERT ON tbl_Patient
        FOR EACH ROW    
        BEGIN
            CALL UPDATE_AGE_VALUES;
        END;
        /

上面的代码尝试在插入行后修改行值。该过程创建一个execute.But我无法从触发器调用该过程。我不知道为什么。 我得到的错误是: 2/7,PLS-00103:遇到符号“UPDATE_AGE_VALUES”时         ,期待以下之一:         ,:=。 (@%;         ,符号“:=”代替“UPDATE_AGE_VALUES”         ,继续

我错过了什么吗? 提前致谢!!!

2 个答案:

答案 0 :(得分:0)

CALL不是PL / SQL中的有效语句。要在PL / SQL中调用过程,您只需要提供其名称,如:

 CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES 
   AFTER INSERT ON tbl_Patient
   FOR EACH ROW    
 BEGIN
   UPDATE_AGE_VALUES;
 END;

您的下一个问题是UPDATE_AGE_VALUES将读取并更新tbl_Patient,这将失败,因为从tbl_Patient上定义的行触发器调用UPDATE_AGE_VALUES。如果你从触发器中移除FOR EACH ROW它可能会有效,但我不会回答这个问题。

分享并享受。

答案 1 :(得分:0)

  CREATE OR REPLACE TRIGGER CHANGE_ROW_VALUES 
     AFTER INSERT ON tbl_Patient
     FOR EACH ROW    
  BEGIN
     UPDATE_AGE_VALUES();
  END;

这对我有用!!!