ORACLE SQL 触发器：PLS-00103：在预期以下情况之一时遇到符号“（”：

Question

您好，我收到错误 PLS-00103：在期待其中一个时遇到符号“（” 下列的 我找不到此错误的原因，请帮助我。谢谢

编辑：粘贴了正确的代码

CREATE OR REPLACE TRIGGER "SUNSHINE_DEPT"
BEFORE INSERT ON "PURCHASE"
FOR EACH ROW
DECLARE type VARCHAR2(7);
BEGIN 

    SELECT SERVICETYPE INTO type 
    FROM (
      SELECT P.SERVICETYPE, D.DNAME
      FROM DEPT D JOIN EMP E ON D.DEPTNO = E.DEPTNO JOIN PURCHASE P ON E.EMPNO = P.SERVEDBY
      WHERE D.DNAME = 'SALES - Sunshine' AND P.SERVEDBY IN (:NEW.SERVEDBY));

    IF type = 'Data Recovery' THEN
      :NEW.AMOUNT := :NEW.AMOUNT * 0.7;
    END IF;
    :NEW.PAYMENTTYPE := 'Cash';
END;
/

Answer 1

这里：

FOR EACH ROW
DECLARE type VARCHAR2(7);
BEGIN 

type 是一个reserved word in Oracle。您需要为变量使用另一个名称。

在这个demo on DB Fiddle中，触发器编译成功：

CREATE OR REPLACE TRIGGER "SUNSHINE_DEPT"
BEFORE INSERT ON "PURCHASE"
FOR EACH ROW
DECLARE mytype VARCHAR2(7);
BEGIN 

    SELECT SERVICETYPE INTO mytype 
    FROM (
      SELECT P.SERVICETYPE, D.DNAME
      FROM DEPT D JOIN EMP E ON D.DEPTNO = E.DEPTNO JOIN PURCHASE P ON E.EMPNO = P.SERVEDBY
      WHERE D.DNAME = 'SALES - Sunshine' AND P.SERVEDBY IN (:NEW.SERVEDBY));

    IF mytype = 'Data Recovery' THEN
      :NEW.AMOUNT := :NEW.AMOUNT * 0.7;
    END IF;
    :NEW.PAYMENTTYPE := 'Cash';
END;
/

Answer 2

这段代码看起来不正确：

SELECT SERVICETYPE INTO type
FROM (SELECT P.SERVICETYPE, D.DNAME
      FROM DEPT D JOIN
           EMP E
           ON D.DEPTNO = E.DEPTNO JOIN
           PURCHASE P
           ON E.EMPNO = P.SERVEDBY
      WHERE D.DNAME = 'SALES - Sunshine'
     ) AND P.SERVEDBY IN (:NEW.SERVEDBY);

AND 之前的) 应该移到最后一个条件之后。

IN 带一栏也是可疑的。但是，这不会导致编译错误，只会导致运行时出现意外行为。