1.ORA-00918: column ambiguously defined错误应对方法:某一列定义模糊
2.ORA-01790: expression must have same datatype as corresponding expression:数据类型必须一致(看看是不是用了UNION后同列数据类型不一致)
3.ORA-00904: "PM"."CM_PAY_SRC": invalid identifier:该列没有定义
1.ORA-00918: column ambiguously defined错误应对方法:某一列定义模糊
2.ORA-01790: expression must have same datatype as corresponding expression:数据类型必须一致(看看是不是用了UNION后同列数据类型不一致)
3.ORA-00904: "PM"."CM_PAY_SRC": invalid identifier:该列没有定义