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
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