DECLARE
@dbname SYSNAME = 'master.sys.databases',
@Searchname SYSNAME = 'model';
DECLARE @sqlCommand NVARCHAR(MAX);
SET @sqlCommand = 'SELECT * FROM ' + @dbname + ' WHERE name = @Searchname';
EXEC sp_executesql @sqlCommand, N'@Searchname SYSNAME', @Searchname = @Searchname;
