How to select only last 4 characters in a column of type varchar2

The data in column P_JACKS.LABEL is in the form of:
294-001,
B01-099,
194A-098,....
I'd like to select only the 3 characters following the '-' dash, and find the maximum of that set.
This must be simple, I know, but so am I. Can someone please help me with this?
Thanks!!

I'm sure there is some slick regexp way to do it but this should work
WITH t AS
(SELECT '294-001' value FROM dual
UNION ALL
SELECT 'B01-099' FROM dual
UNION ALL
SELECT '194A-098' FROM dual
SELECT greatest( (SUBSTR( value,LENGTH(value)-2,1)), (SUBSTR( value,LENGTH(value)-1,1)), (SUBSTR( value,LENGTH(value))) )
FROM tmaybe I misunderstood do want to the max for the whole group as in 99
or did you mean 3 rows with values
1
9
9
which is what I did
Edited by: pollywog on Sep 9, 2010 6:45 PM
Edited by: pollywog on Sep 9, 2010 6:47 PM

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