On Mon, Apr 18, 2011 at 6:34 PM, new2R <bv_agr...@yahoo.co.in> wrote:
> Hi,
>
> I am new to R and trying to migrate from SAS. I am trying to use sqldf to
> create a new table from existed table and change some of the columns. I have
> table called DataOld with columns commodity, rate and total and I am trying
> to create new table called DataNew with columns commodity, ratenew and
> totalNew.
>
>> sqldf("create table datanew as select commodity, ratenew as rate * 10,
>> totalnew as total *10 from DataOld")
>
> I got error message " Error in sqliteExecStatement(con, statement,
> bind.data) :
> RS-DBI driver: (error in statement: near "*": syntax error)
>
Its expression as name, not name as expression. Try this:
> library(sqldf)
> BODnew <- sqldf("select demand, Time, demand + 1 as demandPlusOne from BOD")
> BODnew
demand Time demandPlusOne
1 8.3 1 9.3
2 10.3 2 11.3
3 19.0 3 20.0
4 16.0 4 17.0
5 15.6 5 16.6
6 19.8 7 20.8
For more, the sqldf home page at http://sqldf.googlecode.com has links
to sqlite site where you can find sql syntax diagrams. See the links
along the left side of the page there.
--
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com
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