The CHARINDEX() function returns the location of a search string within another string.
For Example:
This code will return 11, which equates to the position of ‘sentance’ within the string ‘This is a sentance’.
select charindex(‘sentance’,’This is a sentance’)
This can be used to check if string A is contained in String B by using the following command:
select * from TABLE
where charindex(‘ROB’,NAME) != 0
The above command will return rows from the database where the field NAME contains the string ‘ROB’.