Oracle SQL Function - INSTR()

I found it. The use of INSTR() simulates the AWK Function INDEX() and does a search of the first argument to see if the second argument exists and then returns the position where this is first found. Here is the syntax:

INSTR(str, chars[,s[,n]])
Find the 'n'th occurence of 'chars' in 'str'
Starting at position 's'
n and s default to 1

This was decribed in the following page which lists out all the Oracle SQL Functions and is a very useful link:

Oracle SQL Functions

To see a full listing of all Oracle SQL Functions you can run the following query:

SELECT distinct object_name
FROM all_arguments
WHERE package_name = 'STANDARD';