在SQL Server中,我们可以使用GETDATE()函数来获取当前日期和时间。这个函数返回一个datetime类型的值,包含当前的日期和时间。如果我们想获取昨天的日期,我们可以通过对当前日期减去1天来实现。 SELECTGETDATE()ASCurrentDate,DATEADD(DAY,-1,GETDATE())ASYesterdayDate 1. 2. 上面的代码中,我们首先使用GETDATE()函...
CREATE FUNCTION dbo.fnGetDateFromWeekNo (@weekNo int , @yearNo int) RETURNS smalldatetime AS BEGIN DECLARE @tmpDate smalldatetime set @tmpdate= cast(cast (@yearNo as varchar) + '-01-01' as smalldatetime) -- jump forward x-1 weeks to save counting through the whole year set @tmpdate=...
Asked 15 years, 5 months ago Modified 14 years, 1 month ago Viewed 2k times Report this ad 1 I need Week-Start-Date and Week-End-Date for particular Week number in a year (vb.net or SQL Server) For example, if weeknumber=1 and year 2009, I should get: StartDate=1/1/2009 End...
SELECTCASEWHENDATEPART(dy,GETDATE())<DATEPART(dy,'25 Dec'++DATENAME(YEAR,GETDATE())) THENCAST('25 Dec'++DATENAME(YEAR,GETDATE())ASdatetime) ELSECAST('25 Dec'+CAST(DATEPART(YEAR,GETDATE())+1ASVARCHAR)ASdatetime)END /* Date Conversions When converting from SQL Server dates to Unix times...
SELECTCAST(YEAR(GETDATE())AS VARCHAR) --hour (00-23) SELECTDATEPART(hour,GETDATE()) --Hour (01-12) SELECTLEFT(RIGHT(CONVERT(CHAR(19),GETDATE(),100),7),2) --minute SELECTDATEPART(minute,GETDATE()) --second SELECTDATEPART(second,GETDATE()) ...
datepart(year, c.cko_date + 25567) 25567 is the number of days between 1900-01-01 and 1970-01-01; essentially this adjusts for the discrepancy between unix and SQL Server datetime. The SQL Server datetime is designed around 1900-01-01 being the "epoch". It may help to think of SQL...
An expression that can resolve to one of the following values: date datetime datetimeoffset datetime2 smalldatetime time Use four-digit years to avoid ambiguity. SeeServer configuration: two digit year cutofffor information about two-digit year values. ...
To enable SQL Server Service Broker, follow these steps: Run the following SQL query to check if the broker is already enabled, indicated by a result of1(one) in theis_broker_enabledfield: SQL SELECTis_broker_enabledFROMsys.databasesWHEREname='OperationsManager' ...
Transparent data encryption (TDE) encrypts SQL Server, Azure SQL Database, and Azure Synapse Analytics data files. This encryption is known as encrypting data at rest. To help secure a user database, you can take precautions like: Designing a secure system. ...
SQL Server periodically runs the Tuple Mover background task that compresses columnstore index rowgroups with uncompressed data, one such rowgroup at a time.Columnstore compression improves query performance but also consumes system resources. You can control the timing of columnstore compression manually...