The following is not working and I am definitely missing the obvious but would be nice if somebody could explain why is not working. I need to change db dynamically.
The print out looks good but does not change db in the SQL Server drop down.
DECLARE @tempSql nvarchar(4000);
DECLARE @FinalSQL nvarchar(4000);
DECLARE @dbName varchar(100);
SET @dbName = 'Pubs';
SET @tempSql = 'SELECT DB_NAME()';
SET @FinalSQL = 'USE ' + @dbName + '; EXEC sp_executesql N''' + @tempSql + '''';
EXEC (@FinalSQL)
If SQLCMD mode is an option for your (within SSMS, for example), you can do this:
:setvar dbname Pubs
USE [$(dbname)]
SELECT DB_NAME()
Or, your original syntax was pretty close. Try this:
DECLARE @db AS NVARCHAR(258);
SET @db = QUOTENAME(N'Pubs');
EXEC(N'USE ' + @db + N'; EXEC(''SELECT DB_NAME();'');');
GO
There is a way to access data from a specific database by using this syntax :
FROM DatabaseName..TableName
maybe you should use a dynamic database name in your scripts, then change it whenever you need
otherwise, take a look at this : http://www.sqlteam.com/article/selecting-data-from-different-databases
Executing the dynamic SQL is done in a scope of its own.
So you do change the current database, as you see, but only within the scope of the dynamic SQL.
