String Functions:
*LEFT - RIGHT
Syntax is: LEFT ( string-expression , integer )
RIGHT ( string-expression , integer )
SELECT LEFT('Hello',2) --return He
SELECT RIGHT('Hello',2) --return lo
Oracle SQL doesn’t have LEFT and RIGHT functions. They can be emulated with SUBSTR and LENGTH.SUBSTR ( string-expression, 1, integer )
<BR>SUBSTR ( string-expression, length(string-expression)-integer+1, integer)
SELECT SUBSTR('Hello',1,2) --return He
SELECT SUBSTR('Hello',LENGTH('Hello')-2+1,2) --return lo