Question

从表中删除已知值列表的行的基本查询（无法通过查询找到值）可能是：

DELETE FROM table1 WHERE id IN（1,4,6,7）

在这种情况下，table1具有依赖关系，因此我想根据列表（1,4,6,7）将查询中需要首先删除的其他关系写入查询。所以，我可能有类似的东西：

DELETE FROM table2 WHERE id_table2 in（1,4,6,7）

DELETE FROM table1 WHERE id IN（1,4,6,7）

但是我想要一个声明固定列表的查询并为每个值执行查询？（伪代码）

[fixed list] =（1,4,6,7 ...）（允许任何＃静态条目）

DELETE FROM table2 WHERE id_table2 in（[fixed list]）

DELETE FROM table1 WHERE id IN（[fixed list]）

Answer 1

WITH FixedList (ID) AS
(SELECT 1 UNION ALL
 SELECT 4 UNION ALL
 SELECT 6 UNION ALL
 SELECT 7)

DELETE FROM table1 where id in 
  (SELECT ID FROM FixedList)

DELETE FROM table2 where id in
  (select ID FROM FixedList)

-- OPTION 2
 CREATE TABLE #FixedList
  (ID As integer)

 INSERT INTO #Fixedlist
 VALUES (1),
        (4),
        (6),
        (7)
DELETE FROM table1 where id in 
  (SELECT ID FROM #FixedList)

DELETE FROM table2 where id in
  (select ID FROM #FixedList)
 --

MSSQL如何为每个已知的ID集合运行查询

1 个答案: