Use xxxxxxx as a variable

  • HI,

    I have been writing a script that produces the syntax to tidly removes a Database, backup history and any logins associated with the DB from the sql instance.

    In trying to make it as simple as possible I am trying to paramatise the database name currently it starts like this

    declare @Database varchar(50)

    /* Please complete the database to be deleted below */

    set @Database = 'ajb_test_complete_delete'

    use @Database

    I obvioulsy get the error Incorrect syntax near '@Database'.

    Had a look in BOL and on here and cannot see an example to use or even if it is possible

    Thanks

  • You cannot use a variable for the database name in a use statement. You would need to use dynamic SQL to accomplish this.

  • OK, Thanks. Will have a dig in that area then.

  • Make use of somehting like:

    DECLARE @sql VARCHAR(1000) SELECT @sql = 'exec ' + @servername + '.' +

    @databasename+ '.dbo.sp_executesql N''grant select on '+ @tablename + ' to '

    + @username + '''' EXEC (@sql)

    Or

    DECLARE

    @DatabaseName varchar(100), @SQL varchar(500)

    DECLARE DBNameCursor CURSOR FOR

    SELECT top 1

    [Name] AS DatabaseName

    FROM

    master.dbo.sysdatabases

    ORDER BY

    DatabaseName

    OPEN DBNameCursor

    FETCH NEXT FROM DBNameCursor

    INTO @DatabaseName

    WHILE @@FETCH_STATUS = 0

    BEGIN

    ----- Change to Database

    SELECT

    @SQL = 'USE ' + @DatabaseName + char(10)+'select * from sysfiles'

    --print @sql

    EXEC(@SQL)

    FETCH NEXT FROM DBNameCursor

    INTO @DatabaseName

    END

    CLOSE DBNameCursor

    DEALLOCATE DBNameCursor

    HTH

    MJ

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