CHARINDEX( string-expression-1, string-expression-2 )

INT

The first character of string-expression-1 is identified as 1. If the string being searched contains more than one instance of the other string, then the CHARINDEX function returns the position of the first instance.

If the string being searched does not contain the other string, then the CHARINDEX function returns 0.

If any of the arguments are NULL, the result is NULL.

This function supports NCHAR inputs and/or outputs.

• SUBSTRING function [String]
• REPLACE function [String]
• LOCATE function [String]
• String functions

The following statement returns last and first names from the Surname and GivenName columns of the Employees table, but only when the last name includes the letter K:

SELECT Surname, GivenName
FROM Employees
WHERE CHARINDEX( 'K', Surname ) = 1;

Results returned: