Thank you all! 2011/5/4 David Wolfskill <r...@catwhisker.org>: > 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...@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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