sql-server-2014

问题 I'm trying to write the following in order to get a running total of distinct NumUsers, like so: NumUsers = COUNT(DISTINCT [UserAccountKey]) OVER (PARTITION BY [Mth]) Management studio doesn't seem too happy about this. The error disappears when I remove the DISTINCT keyword, but then it won't be a distinct count. DISTINCT does not appear to be possible within the partition functions. How do I go about finding the distinct count? Do I use a more traditional method such as a correlated

问题 I\'m using SQL Server 2014 Express and the LocalDB option, and I have the following in my SQL Server object explorer pane in Visual Studio 2013... So what is the difference between (localdb)\\ProjectsV12 & (localdb)\\MSSQLLocalDB ? 回答1: The (localdb)\ProjectsV12 and (localdb)\ProjectsV13 instances are created by SQL Server Data Tools (SSDT) and should not be used by applications (localdb)\MSSQLLocalDB is the SQL Server Express 2014/2016 LocalDB default instance name and an "automatic instance

问题 As Recordset.MoveNext function is no longer available in VB.NET(searched alot on internet), I want a way to solve my problem.. (Using MSSQL, just seen movenext function somewhere which is not supported with SQLDATASET.) I want to use something which work like MoveNext function and make the changes in the database instantly. Moreover after changes made, it should also reflect into database instantly.. As I said, I searched alot on internet, I am now confused what to use... The following