Columns List with and with out identity Column in a table

Hi, I have the following 2 Query's - case when Table has no Identity Column and other with identity Column . I am planning to make it to single Query .Could some one help in resolving this issue Thanks in advance [b]Query 1: [u][/u][/b]SELECT @ColumnNamesWhenNoIdentity = COALESCE(@ColumnNamesWhenNoIdentity + ',', '') + Name +'= SOURCE.'+Name FROM sys.columns WITH(NOLOCK) WHERE object_id = (SELECT sys.objects.object_id FROM sys.objects WITH(NOLOCK)INNER JOIN sys.schemas WITH(NOLOCK) ON sys.objects.schema_id = sys.schemas.schema_id WHERE sys.objects.TYPE = 'U' AND sys.objects.Name = 'Testing1' AND sys.schemas.Name ='dbo')[b]Query2:[u][/u][/b]SELECT @ColumnNamesWhenNoIdentity = COALESCE(@ColumnNamesWhenNoIdentity + ',', '') + Name +'= SOURCE.'+Name FROM sys.columns WITH(NOLOCK) WHERE is_identity != 1 AND object_id = (SELECT sys.objects.object_id FROM sys.objects WITH(NOLOCK) INNER JOIN sys.schemas WITH(NOLOCK) ON sys.objects.schema_id = sys.schemas.schema_id WHERE sys.objects.TYPE = 'U' AND sys.objects.Name = 'Testing2' AND sys.schemas.Name ='dbo' )