问题描述
我有一个 CTE，它是一个表上的选择语句.现在，如果我从 CTE 中删除 1 行，它会从我的基表中删除该行吗?
I have a CTE which is a select statement on a table. Now if I delete 1 row from the CTE, will it delete that row from my base table?
如果我有一个临时表而不是 CTE，也是同样的情况吗?
Also is it the same case if I have a temp table instead of CTE?
推荐答案
检查 DELETE 语句文档，是，您可以使用 CTE 从中删除，它会影响基础表.同样对于 UPDATE 语句...
Checking the DELETE statement documentation, yes, you can use a CTE to delete from and it will affect the underlying table. Similarly for UPDATE statements...
如果我有一个临时表而不是 CTE，也是同样的情况吗?
Also is it the same case if I have a temp table instead of CTE?
不，从临时表中删除只会影响临时表——数据来自的表没有连接，临时表是一个独立的对象.
No, deletion from a temp table will affect the temp table only -- there's no connection to the table(s) the data came from, a temp table is a stand alone object.
这篇关于从 SQL SERVER 中的 CTE 中删除行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！