Microsoft SQL Server 使用CTE删除重复的行
示例
员工表：
| ID | FirstName | LastName | Gender | Salary | +------+-----------+----------+--------+--------+ | 1 | Mark | Hastings | Male | 60000 | | 1 | Mark | Hastings | Male | 60000 | | 2 | Mary | Lambeth | Female | 30000 | | 2 | Mary | Lambeth | Female | 30000 | | 3 | Ben | Hoskins | Male | 70000 | | 3 | Ben | Hoskins | Male | 70000 | | 3 | Ben | Hoskins | Male | 70000 | +------+-----------+----------+--------+--------+
CTE（公用表表达式）：
WITH EmployeesCTE AS ( SELECT *, ROW_NUMBER()OVER(PARTITION BY ID ORDER BY ID) AS RowNumber FROM Employees ) DELETE FROM EmployeesCTE WHERE RowNumber > 1
执行结果：
| ID | FirstName | LastName | Gender | Salary | +------+-----------+----------+--------+--------+ | 1 | Mark | Hastings | Male | 60000 | | 2 | Mary | Lambeth | Female | 30000 | | 3 | Ben | Hoskins | Male | 70000 | +------+-----------+----------+--------+--------+
热门推荐
3 祝福语简短的微信
10 幼儿祝福语大全简短贺卡
11 感谢教官文案祝福语简短
12 鼠年同事祝福语简短创意
13 元旦祝福语 简短独特群发
14 妈咪跟我生日祝福语简短
15 给儿子新婚祝福语简短
16 伴娘祝福语长文案简短
17 恭喜高考完祝福语简短
18 生日祝福语送老公简短