本文主要介绍了SQLServerRANK()排名函数的使用，具体如下：--例子表数据SELECT*FROMtest;--统计分数SELECTname,SUM(achievement)achievementFROMtestGROUPBYname;--按统计分数做排行SELECTRANK()OVER(ORDERBYSUM(achievement)desc)排行,name,SUM(achievement)achievementFROMtestGROUPBYname;求助问答存储过程使用：USE[DB]GO/******Object:StoredProcedure[dbo].[sp_TodayJoinUser]ScriptDate:2021/1/2614:45:24******/SETANSI_NULLSONGOSETQUOTED_IDENTIFIERONGO--=============================================--Author:_Hey_Jude--Createdate:2021-01-26--Description:获取今日发表帮助/回复的新用户--
本文主要介绍了SQLServer RANK() 排名函数的使用，具体如下：
-- 例子表数据SELECT * FROM test;-- 统计分数SELECT name,SUM(achievement) achievement FROM test GROUP BY name; -- 按统计分数做排行SELECT RANK() OVER( ORDER BY SUM(achievement) desc) 排行,name,SUM(achievement) achievement FROM test GROUP BY name;
求助问答存储过程使用：
USE [DB]GO /****** Object: StoredProcedure [dbo].[sp_TodayJoinUser] Script Date: 2021/1/26 14:45:24 ******/SET ANSI_NULLS ONGO SET QUOTED_IDENTIFIER ONGO -- =============================================-- Author: _Hey_Jude-- Create date: 2021-01-26-- Description: 获取今日发表帮助/回复的新用户-- =============================================CREATE PROCEDURE [dbo].[sp_TodayJoinUser] @tableLevel int, @date varchar(30)ASDeclare @Sql nvarchar(max) declare @minTabId intdeclare @maxTabId intdeclare @maxf_id intdeclare @helpTableName nvarchar(max)declare @tableCount int BEGIN --最小f_id所在表 set @minTabId=0 set @tableCount=@minTabId --最大f_id所在表 set @maxf_id=(select MAX(F_ID) from [Table] where F_IsDelete=0) set @maxTabId=@maxf_id/@tablelevel set @helpTableName='SELECT UserID, Max([F_DateTime]) AS dt FROM [Table] GROUP BY UserID' while @tableCount<=@maxTabId begin print @tableCount set @helpTableName += ' UNION SELECT UserID, Max([DateTime]) as dt FROM SubTable'+cast(@tableCount as nvarchar(10))+' GROUP BY UserID ' set @tableCount=@tableCount+1 end set @Sql='SELECT [nikename] FROM ( SELECT UserID, RANK() OVER(PARTITION BY UserID ORDER BY dt) AS Num,dt FROM ( '+@helpTableName+' ) AS T ) AS NewT LEFT JOIN [UserTable] A WITH(NOLOCK) ON NewT.UserID = A.UserId WHERE Num = 1 AND dt > '''+@date+'''' Exec sp_executesql @SqlEND GO
partition的意思是对数据进行分区，sql语句如下
SELECT* FROM ( SELECT ROW_NUMBER() over(partition by [姓名] order by [打卡时间] desc) as rowNum, [姓名], [打卡时间] FROM [dbo].[打卡记录表] ) tempWHERE temp.rowNum = 1
通过 partition by [姓名] order by [打卡时间] desc，这句就可以做到，让数据按照姓名分组，并且在每组内部按照时间进行排序
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标签: nbsp SQLServer RANK 排名 函数 使用
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