2025特岗教师学科精讲课,试看满意购买,配套纸质资料免费包邮!>>
1. OUTPUT ... INTO
用于将一条记录从表一移动到表二时非常好用,常见于备份记录的应用
例一:
DELETE [TableUseing]
OUTPUT *
INTO [TableBak]
例二:(用于移动时修改某字段的值)
DELETE [TableUseing]
OUTPUT Field1, Field2, GETDATE()
INTO [TableBak]
2.表变量
用于存储临时的查询结果
DECLARE @tmp TABLE (ID INT, CITY NVARCHAR(50))
INSERT INTO @tmp
SELECT MIN(ID), CITY
FROM [TableTest] WITH(NOCLOCK)
GROUP BY CITY
更多信息请查看IT技术专栏