[R] SQL vs R

[Jeff Newmiller]

?table
?aggregate

Also, packages plyr, data.table, and dplyr. You might consider reading [1], but if your interests are really as simple as your examples then the table function should be sufficient. That function is discussed in the Introduction to R document that you really should have read before posting here.

[1] http://www.jstatsoft.org/v40/i01/

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Sent from my phone. Please excuse my brevity.

On May 2, 2014 2:23:13 PM PDT, Dr Eberhard Lisse <nospam at 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")
>
>greetings, el
>
>______________________________________________
>R-help at r-project.org mailing list
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>PLEASE do read the posting guide
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>and provide commented, minimal, self-contained, reproducible code.