SQL server -T-SQL questions and examples.
Lessons once learned and now recorded.
Scenario Here is a recipe on how to concatenate a field from multiple records into one field. There are two pre-conditions for this method to work: First. Your source file needs to have an equivalent of a line number field. This should be a numeric field indicating the sequence in […]
Cannot open database “Your_DB” requested by the login. The login failed.
Login failed for user ‘NT AUTHORITYNETWORK SERVICE’.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Cannot open database “Your_DB” requested by the login. The login failed.
Login failed for user ‘NT AUTHORITYNETWORK SERVICE’. […]
If you connecting to a table using subquery, you might experience an error “Subquery returned more than 1 value“, that will crash your SQL. Here is an elegant and powerful solution that (1) cures the error and (2) allows to locate your desired row more precisely. For example, you […]
ASP.NET page returns this erorr: The EXECUTE permission was denied on the object ‘aspnet_CheckSchemaVersion’, database ‘YourDB’, schema ‘dbo’. (1) First try running this command/wizard: %WinDir%\Microsoft.NET\Framework\v2.0.50727\aspnet_regsql.exe (2) If this doesn’t work, try this query: — Add user ASPNET to DB role USE YourDB GO sp_addrolemember ‘aspnet_Membership_FullAccess’, ‘ASPNET’ These steps should resolve your […]
You are trying to access your ASP.NET page and getting this message: Cannot open database “YourDB” requested by the login. The login failed. Login failed for user ‘YourPC\ASPNET’. Use SQL Manager, navigate to Security ==> Logins. Double click on ASPNET user and go to User Mapping. Select YourDB and […]
SQL Server 2008 allows to store binary data, if Database has a FILESTREAM feature […]
Sometimes you need to display or print a SQL table structure. This article provides a SQL statement that allows you to do that. We are using MS SQL 2008 Studio interface. […]
This article contains 3 examples: – T-SQL; – MS Access; – AS/400. This example shows a standard T-SQL syntax tested on MS SQL 2005 server: update P set P.CertMemberLevelID = Z.CertLevelTo from UPM_MemberPermissionMask P INNER JOIN zzzCertRegistryUpdate Z ON P.MemberID = Z. Cert2ID Here we are updating one […]
It is meaningless to compare for equality (==) two fields of type SmallDateTime, because they contain time component and they are hardly ever the same. Here are some interesting ways around this problem to check, if two SmallDateTime fields have the same date component.
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It was time to move many sites from W2K3 Server (Windows 2003 Server) and SQL 2000 Server to a new W2K8 Server (Windows 2008 Server) and SQL 2008 Server. And if I ever have to do it again, I will check with these notes. The greatest secret in technical life […]
You have 180 days to evaluate. You can check number of days till expiration: open your SQL Server Management Studio and widen first line in Help — About box. What if your trial is about to expire, and you need just a few more days to evaluate? You can switch […]
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