Message-ID: <4A01E93B.3090401@ncsu.edu>
Date: 2009-05-06T19:47:07Z
From: Aaron Sims
Subject: rmysql query help
R HELP,
I am trying to use an R script to connect to a mysql database. I am
having a problem using a variable in the where clause that contains a
"space" in its value.
If I include the variable inside the quotes of the query - i think it is
searching for the name of the variable in the database and not the value
of the variable.
If I put it outside the quotes, then it complains about the space. Are
there special escape characters or something else Im missing? This date
format in a mysql table is pretty standard
Any ideas?
Thanks,
Aaron
require(RMySQL)
startdatetime<-"2009-04-04 01:00:00"
connect <-
dbConnect(MySQL(),user="xxxxx",password="xxxxxx",dbname="xxxxx",host="xxx.xxx.xxx.xxx")
forecast <- dbSendQuery(connect, statement=paste("SELECT ICE FROM table1
WHERE BEGTIME >= 'startdatetime'")) # doesnt read variable
or
forecast <- dbSendQuery(connect, statement=paste("SELECT ICE FROM table1
WHERE BEGTIME >="startdatetime)) # space error
but this seems to work
forecast <- dbSendQuery(connect, statement=paste("SELECT ICE FROM table1
WHERE BEGTIME >='2009-04-04 01:00:00'"))