IndexOf function in T-SQL

Given an email address column, I need to find the position of the @ sign for substringing.

What is the indexof function, for strings in T-SQL?

Looking for something that returns the position of a substring within a string.

in C#

var s = "abcde";
s.IndexOf('c'); // yields 2

CHARINDEX is what you are looking for

select CHARINDEX('@', '[email protected]')
-----------
8

(1 row(s) affected)

-or-

select CHARINDEX('c', 'abcde')
-----------
3

(1 row(s) affected)

You can use either CHARINDEX or PATINDEX to return the starting position of the specified expression in a character string.

CHARINDEX('bar', 'foobar') == 4
PATINDEX('%bar%', 'foobar') == 4

Mind that you need to use the wildcards in PATINDEX on either side.

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