Trying to convert the following sql query (msssql) into a Parameter for execution.  I am completely lost how to place the apostrophes.   Can someone get me started?  Thanks

set @SQL=
SELECT 

@DP= Y.times.query('DateDispatched').value('.', 'varchar(19)'),
@ER=Y.times.query('DateEnroute').value('.', 'varchar(19)')

FROM ( 
SELECT CAST(y AS XML)
FROM OPENROWSET(
     BULK @FILENAME,
     SINGLE_BLOB) AS T(y)
     ) AS T(y)
CROSS APPLY y.nodes('/PCRDATA/Times') AS Y(Times)
	if exists(select* from [dbo].[MICU] where PRID=@PRID)	
	UPDATE  [dbo].[MICU] 
	
	SET dbo.MICU.Dispatched= @DP,dbo.MICU.Enroute= @er
	where dbo.MICU.PRID=@PRID

ELSE

 INSERT INTO [dbo].[MICU] (PRID,Dispatched,Enroute) values(@PRID,@DP,@er)