substring
Returns the substring of "string_expression" that starts at position "integer_expression1". "Integer_expression2" specifies the number of characters in the substring.
Syntax
substring ( string_expression , integer_expression1 ,
integer_expression2 )
Example
substring ( [Sales (query)].[Sales staff].[Position code], 3 , 5 )
Result
Returns characters 3 to 7 of the position codes.