Returns a sub-string from the right part of a text string.
Syntax:
RIGHT(text {, length})
Returns the length rightmost characters of the text string.
If the length parameter is omitted, 1 is assumed.
Starting with 1.36, a length of zero is allowed (for consistency with the MID()
function).
Example:
RIGHT("Thunderbird", 4)
returns the text string "bird"
.