Question

下面提到的sql Trigger在oracle sql plus

中正确执行

 CREATE OR REPLACE TRIGGER test_trigger 
 BEFORE INSERT ON RESULTS
 REFERENCING NEW AS NEW
 FOR EACH ROW
 BEGIN
 SELECT Pd_seq.nextval INTO :NEW.PT_ID FROM dual;
 END;
 /

但是，当通过java实现时，相同的代码会引发以下错误

CODE：

 ResultSet rs1 = stmt.executeQuery("CREATE OR REPLACE TRIGGER test_trigger123 "+
                "BEFORE INSERT ON RESULTS"+
                "REFERENCING NEW AS NEW"+
                "FOR EACH ROW"+
                "BEGIN"+
                "SELECT Pd_seq.nextval INTO :NEW.PT_ID FROM dual;"+
                "END;"+
                "\n/");

Eclipse中的错误消息：

SQL Exception:
State  : 42000
Message: ORA-04079: invalid trigger specification

Error  : 4079

请帮助。导致错误的原因是什么？

Answer 1

您需要在每行后插入一个空格或\ n。例如：

ResultSet rs1 = stmt.executeQuery("CREATE OR REPLACE TRIGGER test_trigger123\n"+
                "BEFORE INSERT ON RESULTS\n"+
                "REFERENCING NEW AS NEW\n"+
                "FOR EACH ROW\n"+
                "BEGIN\n"+
                "SELECT Pd_seq.nextval INTO :NEW.PT_ID FROM dual;\n"+
                "END;\n"+
                "\n/");

Answer 2

如果您尝试像现在一样执行它，它将如下所示：

stmt.executeQuery("CREATE OR REPLACE TRIGGER test_trigger123 BEFORE INSERT ON RESULTSREFERENCING NEW AS NEWFOR EACH ROWBEGINSELECT Pd_seq.nextval INTO :NEW.PT_ID FROM dual;END;\n/");

这就是为什么你必须在你的线后添加空格。

ResultSet rs1 = stmt.executeQuery("CREATE OR REPLACE TRIGGER test_trigger123 "+
            "BEFORE INSERT ON RESULTS "+
            "REFERENCING NEW AS NEW "+
            "FOR EACH ROW "+
            "BEGIN "+
            "SELECT Pd_seq.nextval INTO :NEW.PT_ID FROM dual; "+
            "END; "+
            "\n/");

消息：ORA-04079：eclipse中的触发器规范无效

2 个答案: