On 04/05/14 00:05, Dr Eberhard W Lisse wrote:
Thank you very much, Mr Arkell.
I don't get it. Can anyone explain the (joke? allusion?) ?
cheers,
Rolf Turner
On 2014-05-03, 07:11 , Bert Gunter wrote:
By making the effort to learn R?
See e.g. the "Introduction to R" tutorial that ships with R.
-- Bert
Bert Gunter
Genentech Nonclinical Biostatistics
(650) 467-7374
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
H. Gilbert Welch
On Fri, May 2, 2014 at 2:23 PM, Dr Eberhard Lisse <nos...@lisse.na> wrote:
Hi,
How do I do something like this without using sqldf?
a <- sqldf("SELECT COUNT(*) FROM b WHERE c = 'd'")
or
e <- sqldf("SELECT f, COUNT(*) FROM b GROUP BY f ORDER BY f")
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