datepart

问题 nextUpdate can be any date time value in the past. I'm trying to update the nextUpdate field to today's date but keeping the time unchanged and then add 8 hours. I get error converting string to datetime T-SQLe: UPDATE business.dbo.db_schedule SET nextUpdate = DATEADD(hh, 8, CONVERT(datetime, CONVERT(VARCHAR(8), GETDATE(), 111) + ' ' + CONVERT(VARCHAR(8), nextUpdate, 108), 111)) WHERE sno = 8 datetime format in my location is 111 回答1: UPDATE business.dbo.db_schedule SET nextUpdate= DATEADD(hh

问题 I have a data set that pulls back visit time in hour/min format (e.g. - 12:33PM would be 1233). I am trying to use the DATEPART function but it keeps giving me a syntax error stating that : "expecting something between '(' and the 'HOUR' keyword. The section below is the piece of the SQL that is giving me errors: CASE WHEN DATEPART(HOUR , VSL.VISIT_TIME) > 12 THEN DATEPART (HOUR, VSL.VISIT_TIME) -12 ELSE DATEPART (HOUR, VSL.VISIT_TIME) END AS THE_TIME I am trying to just get the hour part of

问题 I have this code which I'm writing into a stored procedure: declare @StartTime time declare @EndTime time declare @Temp_StartTime time declare @temp_StartHour int declare @temp_EndHour int declare @temp_StartMinute int declare @temp_EndMinute int SET @StartTime='22:30:00' SET @EndTime='00:52:00' SET @Temp_StartTime=@StartTime SET @temp_StartHour=DATEPART(HOUR, @StartTime) SET @temp_EndHour=DATEPART(HOUR, @EndTime) SET @temp_StartMinute=DATEPART(MI, @StartTime) SET @temp_EndMinute=DATEPART(MI,

问题 Is there a quick one-liner to call datepart in Sql Server and get back the name of the day instead of just the number? select datepart(dw, getdate()); This will return 1-7, with Sunday being 1. I would like 'Sunday' instead of 1. 回答1: select datename(weekday, getdate()); 回答2: It actually took me more searching than I thought it would to find this answer. It's funny how you can use a technology for ages and never know about simple functions like this. select datename(dw, getdate()) I'm not

问题 I'm trying to select records that were added to the database between the start of the current month and the current day - I more or less know how to get records from the current day, and within a specific time period - but how do I get it so it starts from the beginning of the current calendar month? 回答1: DECLARE @sm DATETIME; SET @sm = DATEADD(DAY, 1-DAY(GETDATE()), DATEDIFF(DAY, 0, GETDATE())); SELECT columns FROM dbo.foo WHERE datetime_column >= @sm; 回答2: WHERE YEAR([Date])=YEAR(GETDATE())

问题 ISO-8601 states that week numbers are to be formated as YYYY-W## - observe that the week number should be two digits as 01, 02, ... SELECT cast(DATEPART(YYYY, CreationDate) as varchar) + '-W' + cast(DATEPART(ISO_WEEK, GETDATE())` The problem is that this gives the week number as 1, 2, ... What is the correct way of extracting 2020-W01, ... 回答1: SELECT cast(DATEPART(YYYY, CreationDate) as varchar) + '-W' + Right('0'+cast(DATEPART(ISO_WEEK,CreationDate) as Varchar),2) 回答2: The original question

问题 How to extract the millisecond, weekday, microsecond, nanosecond from a date in Postgres. I have tried the extract methods too, but I could not find an exact equivalent. 回答1: I'm not sure what equivalent are you looking for, but: there is no nanosecond precision in PostgreSQL: The allowed range of p (precision) is from 0 to 6 for the timestamp and interval types. some date parts include others: i.e. milliseconds contains seconds & microseconds contains milliseconds (and thus seconds too). If

问题 I'm using SQL Server CE for rapid application development purposes and have hit a little snag - it doesn't seem to support changing the start day of the week. What I've tried: SET DATEFIRST 1; which yields: Unrecognized SET statement as a response (both via a query window and through code). I've googled around and can't find anything in the documentation as to whether changing the start date of a week is supported or isn't supported by SQL Server Ce, nor can I find any alternative method of

问题 Here is an example of the current table I have: 1) Table name: TotalSales Name Year Month Sales ------ ---- ----- ----- Alfred 2011 1 100 What I want to do is create a table like this, add a new row(Prior month sales): 2) Table name: TotalSales Name Year Month Sales Prior month sales ------ ---- ----- ----- ----------------- Alfred 2011 2 110 100 Not sure how to this, but this is what I have been working on: SELECT Name, Year, Month, Sales, Sales as [Prior Month sales] FROM TotalSales WHERE

问题 I have two datetime fields and I need to show the difference between them. I've used this expression to calculate it: =DateDiff("n", Fields!hra_atncion.Value, Fields!fcha_incio.Value) The result column should be on HH:mm , but the result is a Long expression type. Something like 428011156 Any answer will be apreciated! UPDATE 21/11/2013 How I obtain the time difference in minutes between 12-11-2013 20:00 and 14-11-2013 08:00 ? 回答1: I think, you should try this expression: =Datediff("h",Fields