I've got an interesting one...I'm trying to find columns that have three or
fewer distinct characters (for example, "aaaaaaaaaa"). Wondering if I need to
write a function or if someone has an idea how to do it with built in
functions and/or pattern matching?
I think the thing to do would be to lowercase everything, then remove all
duplicate chars and spaces, then use length() on that, but it's not obvious to
me how I might remove the duplicate chars with the pattern matching support
in the docs.
--
Jeff Frost, Owner <jeff@frostconsultingllc.com>
Frost Consulting, LLC http://www.frostconsultingllc.com/
Phone: 650-780-7908 FAX: 650-649-1954
