search for: numpt

I am using the package rpart to explore various classification structures. The call looks like: seekhi1<-rpart(pvol~spec+a1+psize+eppres+numpt+icds+bivalcrt+stents+ppshare+ nhosp+nyrs,data=dat,method="class", control=rpart.control(minsplit=30,xval=10)) The output is 1) root 198 87 1 (0.5606061 0.4393939) 2) psize=1,2 122 43 1 (0.6475410 0.3524590) 4) a1=3 23 5 1 (0.7826087 0.2173913) * 5)...

...-01-08 03:00:00' However, when I try to accomplish this using R: sqlQuery(channel1,"Select * from tb_ace_mag_1m where time_tag>='2012-01-08 00:00:00' AND time_tag<'2012-01-08 03:00:00'", max=10) I obtain no results: [1] time_tag insert_time dsflag numpts gse_bx gse_by gse_bz gse_lat gse_lon gsm_bx gsm_by gsm_bz gsm_lat gsm_lon bt <0 rows> (or 0-length row.names) If I omit the time_tag parameter, I get the following: > sqlQuery(channel1,"select * from tb_ace_mag_1m", max=10)...