Your code looks more like Visual Basic rather than R.
What you want is:
for(j in 1:length(criteria$Title)){
sqlstring <- paste("select q.type,crit.Title, r.Value from criteria crit, reply
r,question_reply qr, question q, question_criteria qc, form_question fq where
qr.reply=r.ID and qr.question=q.ID and qc.question=q.ID and crit.ID=qc.criteria
and fq.question=q.ID and fq.form=4 and crit.Title='", criteria$Title[j], "';",
sep="")
graphe_par<-sqlQuery(channel,sqlstring)
}
See ?paste
Regards
Markus
Your SQL statement seems to be wrong.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Navarre Sabine
Sent: 18 May 2005 13:03
To: [email protected]
Subject: [R] R -SQL
Hello,
I've got a problem in a sql query!
for(j in 1:length(criteria$Title))
{
graphe_par<-sqlQuery(channel,"select q.type,crit.Title, r.Value from
criteria crit, reply r,question_reply qr, question q, question_criteria qc,
form_question fq where qr.reply=r.ID and qr.question=q.ID and qc.question=q.ID
and crit.ID=qc.criteria and fq.question=q.ID and fq.form=4 and crit.Title=" &
criteria$Title[j] &";")
............}
> criteria$Title
[1] Content Logistic Trainer Supply
User contribution
Levels: Content Logistic Supply Trainer User contribution
The error is:
Error in "select q.type,crit.Title, r.Value from criteria crit, reply
r,question_reply qr, question q, question_criteria qc, form_question fq where
qr.reply=r.ID and qr.question=q.ID and qc.question=q.ID and crit.ID=qc.criteria
and fq.question=q.ID and fq.form=4 and crit.Title=" & :
operations are possible only for numeric or logical types
In addition: Warning message:
& not meaningful for factors in: Ops.factor("select q.type,crit.Title, r.Value
from criteria crit, reply r,question_reply qr, question q, question_criteria
qc, form_question fq where qr.reply=r.ID and qr.question=q.ID and
qc.question=q.ID and crit.ID=qc.criteria and fq.question=q.ID and fq.form=4 and
crit.Title=",
please help me,
Thanks a lot!
Sabine
---------------------------------
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