T-SQL to SQL

Hi all,

I have some SQL code that works in Access but now i want to try do the same thing in SQL.

Below is the code, could anyone please help? 

Thanks in advance

Chris

SELECT T1.*, (SELECT TOP 1 T3.[SMN_DATEC]-1 FROM 
(SELECT T2.[DET_NUMBERA], T2.[SMN_DATEC] FROM [CHRISCS_EMSAL] AS T2 ORDER BY [DET_NUMBERA],[SMN_DATEC]) AS T3 WHERE T3.[DET_NUMBERA] = T1.[DET_NUMBERA] AND T3.[SMN_DATEC] > T1.[SMN_DATEC] ) AS EndDate, T1.[DET_NUMBERA], T1.[SMN_DATEC]
FROM CHRISCS_EMSAL AS T1
ORDER BY T1.[DET_NUMBERA], T1.[SMN_DATEC];