DECLARE @cols AS NVARCHAR(MAX);
DECLARE @query AS NVARCHAR(MAX);
select @cols = STUFF((SELECT distinct ',' + QUOTENAME(Id)
FROM RWX_Users FOR XML PATH(''), TYPE ).value('.', 'NVARCHAR(MAX)') , 1, 1, '');
SELECT @query =
'SELECT *
FROM
(
SELECT
Users.Id
...
