compare dates sql server

-05‘ifdatepart(dd,@day)=1return1elseset@Start=(SELECT DATEADD(mm,DATEDIFF(mm,0,@day),0))--一个月第一天的set@dayofweek=(datename(weekday,@Start))---得到本月第一天是周几set@dayofweek_num=(select(case@dayofweekwhen ‘星期一‘then2when‘星期二‘then3when‘星期三‘then4when‘星期四‘then5when‘星期五‘then6when‘星期六‘then7when‘星期日‘then1end))set @dayofweek_num=[emailprotected]_num+1---得到本月的第一周一共有几天---print@dayofweek_numset@dd=datepart(dd,@day)----得到今天是这个月的第几天--print@ddif@dd--小于前一周的天数return 1elseset@[emailprotected]@dayofweek_numif@dd%7=0beginse

Note: The following table in 0 is actually the date 1900-1-11.0 Points of the daySELECT DATEADD (Day,DATEDIFF(Day,0,GETDATE()),0)The above DateDiff (Day,0,getdate ()) means to calculate the number of days of the day and 1900-1-1, let's remember that this is N days, and then through the DateAdd calculated 1900-1-1 plus n days to reach the date of the day, time is 0.2. The first day of the monthSELECT DATEADD (month,DATEDIFF(month,0,GETDATE()),0)The principle is the same, but the calculation unit

(@StringDate,‘MM‘,RIGHT(‘0‘+CONVERT(VARCHAR,DATEPART(MM, @Datetime)),2))IF (CHARINDEX (‘M‘,@StringDate) > 0)SET@StringDate =REPLACE(@StringDate,‘M‘,CONVERT(VARCHAR,DATEPART(MM, @Datetime)))IF (CHARINDEX (‘DD‘,@StringDate) > 0)SET@StringDate =REPLACE(@StringDate,‘DD‘,right(‘0‘+DATENAME(DD, @Datetime),2))IF (CHARINDEX (‘D‘,@StringDate) > 0)SET@StringDate = REPLACE(@StringDate,‘D‘,DATENAME(DD, @Datetime))RETURN@StringDateENDGO2.通过dateadd函数来制定时间间隔select dateadd(year,-1,convert(varchar, getdate(), 10

When the beta version of the project is synchronized (deployed) to the official version, the structure of the two databases compared with the synchronization, if the database is not modified when modifying those tables, it is difficult to synchronize two of databasesRedgate SQL Compare usage Brief description:1. Compare and synchronize all objects in the database

Tags: BSP server update SQL Server check random generation problem S3A paging problem, DTCms3.0, paging is based on the time page, if the Add Time (add_time) is the same value, regardless of the number of pages clicked, the data displayed is the same content, so there is a need to change the same time to specify a random date function.The

(CHARINDEX (‘Mon‘,@StringDate) > 0) SET @StringDate = REPLACE(@StringDate, ‘Mon‘,LEFT(DATENAME(MM, @Datetime),3)) IF (CHARINDEX (‘MM‘,@StringDate) > 0) SET @StringDate = REPLACE(@StringDate, ‘MM‘,RIGHT(‘0‘+CONVERT(VARCHAR,DATEPART(MM, @Datetime)),2)) IF (CHARINDEX (‘M‘,@StringDate) > 0) SET @StringDate = REPLACE(@StringDate, ‘M‘,CONVERT(VARCHAR,DATEPART(MM, @Datetime))) IF (CHARINDEX (‘DD‘,@StringDate) > 0) SET @StringDate = REPLACE(@StringDate, ‘DD‘,right(‘0‘+DATENAME(DD, @Datetime),2)) IF (CH

In the data room charging system, there are several such situations: Start date and end date. I believe you are smart enough to figure out why there are two date controls! Yes, it is to find records in these two date ranges from a table! Some people just said, it's not easy! Suppose we define the first control as Begin, and the second control as Over! The query statement is notCopy codeThe Code is as follows:"Select * from recharge_info where date What's the problem! However, the fact is not tha

Compare SQL Server, Oracle, and DB2 I. Openness: SQL ServerIt can only run on windows without any openness. The stability of the operating system is very important to the database.The Windows9x series products focus on desktop applications, and the NT Server is only s

Tags: style http os io using AR data sp HTMLRecent projects used a lot of dates to convert strings, strings converted to date methods, but also used a lot of date format, special collation as follows, for later use.1. Convert date to string, date formatUse the function convert:CONVERT (data_type [(length)], expression [, style])ParametersExpressionIs any valid Microsoft?nbsp;sql

publishing side with the verification subscription function at the publisherMethod Seven: Compare the checksum values of the contents of two tables with checksum checkBut this approach is only confined to the two-table structure.I copy the data from the [t1_new] table to a new table for comparisonSELECT * from [dbo].[t1_new]SELECT * from [dbo].[T1_newreplica]SELECT SUM(CHECKSUM (*)) asChecksumvalue from [dbo].[T1_old]SELECT SUM(CHECKSUM (*)) asChec

function at the publisherMethod Seven: Compare the checksum values of the contents of two tables with checksum checkBut this approach is only confined to the two-table structure.I copy the data from the [t1_new] table to a new table for comparisonSELECT * from [dbo].[t1_new]SELECT * from [dbo].[T1_newreplica]SELECT SUM(CHECKSUM (*)) asChecksumvalue from [dbo].[T1_old]SELECT SUM(CHECKSUM (*)) asChecksumvalue from [dbo].[t1_new]SELECT SUM(CHECKSUM (*

:47SELECT CONVERT (varchar), GETDATE (), 25)--2010-05-03 10:57:47.250SELECT CONVERT (varchar), GETDATE (), (+)--10:57amSELECT CONVERT (varchar), GETDATE (), 101)--05/03/2010SELECT CONVERT (varchar), GETDATE (), 102)--2010.05.03SELECT CONVERT (varchar), GETDATE (), 103)--03/05/2010SELECT CONVERT (varchar), GETDATE (), 104)--03.05.2010SELECT CONVERT (varchar), GETDATE (), 105)--03-05-2010SELECT CONVERT (varchar), GETDATE (), 106)--03 05 2010SELECT CONVERT (varchar), GETDATE (), 107)--05 03, 2010SE

Label:A paging problem, DTCms3.0, paging is based on the time page, if the Add Time (add_time) is the same value, regardless of the number of pages clicked, the data displayed is the same content, so there is a need to change the same time to specify a random date function.The original paste script goes to http://bbs.csdn.net/topics/340165720 on the 7th floor of Feilniu.The SQL script is as follows:DECLARE@BDatedatetime,@EDatedatetimeSET@BDate='20150

@t1_newcount=COUNT (*)FromT1_new;SELECT@count=COUNT (*)From[T1_old]AsAINNERJOIN[T1_new]As BOn[B].[Id]=[A].[Id]and[B].[Log_time]=[A].[Log_time]-- If there are other fields in the table that you add yourself print print @t1_newcount if ( @count = @t1_newcount ) begin ' equal "end else begin select Span style= "color: #ff0000;" > ' Method five: With SQL Server's own Tablediff tool, Microsoft made this tool to comp