CHARINDEX é o que você procura
select CHARINDEX('@', '[email protected]')
-----------
8
(1 row(s) affected)
-ou-
select CHARINDEX('c', 'abcde')
-----------
3
(1 row(s) affected)
select CHARINDEX('@', '[email protected]')
-----------
8
(1 row(s) affected)
select CHARINDEX('c', 'abcde')
-----------
3
(1 row(s) affected)
