Thorsten Muehge <MUEHGE <at> de.ibm.com> writes: > 1. Is it possible to query R files by SQL internally on data frames (not on > a database) and how is the syntax (I have the RODBC package installed).
It is possible to do similar things "conceptually" in R as in SQL---at least the basic SQL queries (I have not tried others). Unlike SQL, R retains the sort order. So far as I know you can not use SQL code to query R data-frames. But you can put SQL code in a .R file and use RODBC or ODBC (I have used this) to send SQL queries to database; you can also get the results from SQL queries back to R as R objects. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
