审计表触发器答案

【问题标题】：Trigger for audit table审计表触发器
【发布时间】：2014-04-19 22:53:28
【问题描述】：

我正在尝试运行此代码为我的审计表创建触发器，但我收到错误消息：

PLS-00103: Encountered the symbol "TRG_AUDIT_EMP" when expecting one of the following: if

我该如何解决这个问题？

create or replace TRIGGER trg_audit_emp
  AFTER INSERT OR DELETE OR UPDATE ON emp_mb
  FOR EACH ROW
DECLARE
  v_trg_action VARCHAR2(6);
BEGIN
  IF updating
  THEN
    v_trg_action := 'UPDATE';
  ELSE IF deleting
  THEN
    v_trg_action := 'DELETE';
  ELSE IF inserting
  THEN
    v_trg_action := 'INSERT';
  ELSE
    v_trg_action := 'NULL';
END IF;
  IF v_trg_action IN ('DELETE','UPDATE') THEN
   INSERT INTO emp_audit
  ( emp_id,  emp_forename,  emp_surname, username, AUDIT_USER,  AUDIT_DATE,  AUDIT_ACTION)
   VALUES
  (:OLD.emp_ID, :OLD.emp_forename, :OLD.emp_surname, :old.username, UPPER(v('APP_USER')), SYSDATE, v_trg_action);
  ELSE
   INSERT INTO emp_audit
  ( emp_id,  emp_forename,  emp_surname, username, AUDIT_USER,  AUDIT_DATE,  AUDIT_ACTION)
   VALUES
  (:NEW.emp_id, :NEW.emp_forename, :NEW.emp_surname, NEW.username, UPPER(v('APP_USER')), SYSDATE, v_trg_action);
  END IF;
END trg_audit_emp ;

【问题讨论】：

标签： sql plsql triggers

【解决方案1】：

只需删除END 语法后的trg_audit_emp ！你还需要结束你的ELSE IF 示例：

       create or replace TRIGGER trg_audit_emp
      AFTER INSERT OR DELETE OR UPDATE ON emp_mb
      FOR EACH ROW
    DECLARE
      v_trg_action VARCHAR2(6);
    BEGIN
      IF updating
      THEN
        v_trg_action := 'UPDATE';
      ELSE IF deleting
      THEN
        v_trg_action := 'DELETE';
      ELSE IF inserting
      THEN
        v_trg_action := 'INSERT';
      ELSE
        v_trg_action := 'NULL';
    END IF;
    END IF;
    END IF;
      IF v_trg_action IN ('DELETE','UPDATE') THEN
       INSERT INTO emp_audit
      ( emp_id,  emp_forename,  emp_surname, username, AUDIT_USER,  AUDIT_DATE,  AUDIT_ACTION)
       VALUES
      (:OLD.emp_ID, :OLD.emp_forename, :OLD.emp_surname, :old.username, UPPER(v('APP_USER')), SYSDATE, v_trg_action);
      ELSE
       INSERT INTO emp_audit
      ( emp_id,  emp_forename,  emp_surname, username, AUDIT_USER,  AUDIT_DATE,  AUDIT_ACTION)
       VALUES
      (:NEW.emp_id, :NEW.emp_forename, :NEW.emp_surname, NEW.username, UPPER(v('APP_USER')), SYSDATE, v_trg_action);
      END IF;
    END;
/

【讨论】：

为响应干杯，但我收到此错误。第 24 行错误：PL/SQL: SQL 语句被忽略
你是什么 24 行？

【解决方案2】：

在 PL/SQL 中，IF 语句的语法是

IF condition THEN
  statement
ELSIF condition THEN
  statement
ELSE
  statement
END;

你有ELSE IF而不是ELSIF，然后END IFs太多了。

试试这个：

create or replace TRIGGER trg_audit_emp
  AFTER INSERT OR DELETE OR UPDATE ON emp_mb
  FOR EACH ROW
DECLARE
  v_trg_action VARCHAR2(6);
BEGIN
  IF updating THEN
    v_trg_action := 'UPDATE';
  ELSIF deleting THEN
    v_trg_action := 'DELETE';
  ELSIF inserting THEN
    v_trg_action := 'INSERT';
  ELSE
    v_trg_action := 'NULL';
  END IF;

  IF v_trg_action IN ('DELETE','UPDATE') THEN
    INSERT INTO emp_audit (emp_id, emp_forename, emp_surname,username,
                           AUDIT_USER, AUDIT_DATE, AUDIT_ACTION)
    VALUES (:OLD.emp_ID, :OLD.emp_forename, :OLD.emp_surname, :old.username, 
            UPPER(v('APP_USER')), SYSDATE, v_trg_action);
  ELSE
    INSERT INTO emp_audit (emp_id,  emp_forename,  emp_surname, username,
                           AUDIT_USER,  AUDIT_DATE,  AUDIT_ACTION)
    VALUES (:NEW.emp_id, :NEW.emp_forename, :NEW.emp_surname, NEW.username, 
            UPPER(v('APP_USER')), SYSDATE, v_trg_action);
  END IF;
END trg_audit_emp;

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【讨论】：