Oracle 中的动态删除

Question

我有一些静态数据，我正在 union all 的帮助下创建 select 语句，我正在将这些数据与 DB table（部门）进行比较。在减号的帮助下我将获得 DB table 中的额外记录，我需要删除这些记录......需要将现有记录与静态数据同步我希望这将清除要求..

试图在下面的查询中删除 select 查询的结果集我不确定我的错误在哪里.. 得到 SQL 错误：ORA-01732：数据操作操作在此视图上不合法 01732.00000 - "data manipulation operation not legal on this view"

我在这里尝试删除所有与 66,77 不匹配的部门的记录

  delete from (select department_id, department_name, manager_id,location_id from departments
     minus
      (select 66,'Administration',200,1700 from dual
    union all
    select 77,'Marketing',201,1800 from dual));

Answer 1

deletes 在表上工作，而不是 select 语句的结果。这里，你只想删除除ID 66和77之外的所有记录：

DELETE FROM departments WHERE id NOT IN (66, 77)

Answer 2

  delete departments

  where  department_id in
         (
            select department_id

            from  (    select  department_id, department_name, manager_id,location_id 
                       from    departments

                       minus

                       (          select 66,'Administration',200,1700 from dual
                       union all  select 77,'Marketing'     ,201,1800 from dual
                       )
                   )
         )

或

  delete departments

  where  (department_id, department_name, manager_id,location_id) not in
         (          select 66,'Administration',200,1700 from dual
         union all  select 77,'Marketing'     ,201,1800 from dual
         )

但请确保您的 UNION ALL 记录中没有 select null,null,null,null from dual，否则不会删除任何内容

Oracle 中的动态删除

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