How to do insert and update in a stored procedure? - sql-server

Question

I'm writing a stored procedure which is first doing an insert if the data does not exists. If the data exists, I'm updating the date column and inserting data. When I run the stored procedure, I get the following error.
incorrect syntax near ' ; '
I don't know what is going on or what I'm doing wrong... It seems like there's something wrong with my CTE, but I don't know for sure. Thank you in advance.
CREATE PROCEDURE [dbo].[spSCDTest] #SCD [dbo].[spSCDTest1] READONLY
AS
BEGIN
/****** SCD TYPE - 2 (retains the full history of values) ******/
/** DimUsers Insert New**/
CREATE NONCLUSTERED INDEX IX_DimUsers_userID
ON [dbo].[DimUsers] ([userID]);
WITH DimCTE AS
(
SELECT * ,
HASHBYTES('SHA2_256',CONCAT(source.name,'|',source.location,'|',source.supervisor, '|',source.salary)) as [HashUsers]
FROM #SCD source
)
INSERT INTO dbo.DimUsers
(
userID,
name,
location,
StartDate,
EndDate,
supervisor,
salary,
HashUsers
)
SELECT
cte.userID,
cte.name,
cte.location,
GETDATE() AS StartDate,
'12/31/9999' AS EndDate,
cte.supervisor,
cte.salary,
cte.HashUsers
FROM
DimCTE cte
WHERE not exists
(SELECT * FROM dbo.DimUsers DU WHERE DU.userID = cte.userID);
/** DimUsers Update Old**/
CREATE NONCLUSTERED INDEX IX_Enddate_serID
ON [dbo].[DimUsers] ([EndDate], [userID])
INCLUDE([HashUsers]);
DECLARE #NewEndDate datetime2;
SET #NewEndDate = GETDATE();
WITH DimCTE AS
(
SELECT * ,
HASHBYTES('SHA2_256',CONCAT(source.name,'|',source.location,'|',source.supervisor, '|',source.salary)) as [HashUsers]
FROM #SCD source
)
UPDATE DimUsers
SET
EndDate = #NewEndDate
FROM
DimUsers DU
INNER JOIN DimCTE cte ON DU.userID = cte.userID
WHERE
(
DU.EndDate = '12/31/9999' AND
cte.HashUsers <> du.HashUsers
);
/** DimUsers InsertOld Update**/
WITH DimCTE AS
(
SELECT * ,
HASHBYTES('SHA2_256',CONCAT(source.name,'|',source.location,'|',source.supervisor, '|',source.salary)) as [HashUsers]
FROM #SCD source
)
INSERT INTO dbo.DimUsers
(
userID,
name,
location,
StartDate,
EndDate,
supervisor,
salary,
HashUsers
)
SELECT
cte.userID,
cte.name,
cte.location,
#NewEndDate AS StartDate,
'12/31/9999' AS EndDate,
cte.supervisor,
cte.salary,
cte.HashUsers
FROM
DimCTE cte
INNER JOIN DimUsers DU ON DU.userID = cte.userID AND DU.EndDate = #NewEndDate;