[R] Regexp question

[David Wolfskill]

On Wed, May 04, 2011 at 10:41:36PM +0300, johannes rara wrote:
> I have a string like this
> 
> st <- "SELECT COUNT(empid), COUNT(mgrid), COUNT(empname),
> COUNT(salary), FROM Employees"
> 
> How can I remove the last comma before the FROM statement?

This doesn't use a regex, per se, but:

> st <- "SELECT COUNT(empid), COUNT(mgrid), COUNT(empname), COUNT(salary), FROM Employees"
> st
[1] "SELECT COUNT(empid), COUNT(mgrid), COUNT(empname), COUNT(salary), FROM Employees"
> sub(", FROM", " FROM", st)
[1] "SELECT COUNT(empid), COUNT(mgrid), COUNT(empname), COUNT(salary) FROM Employees"
> 

I'm not sure that's what you had in mind, though.

Peace,
david
-- 
David H. Wolfskill				r at catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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