Re: [R] RODBC: longest string is truncated

From: Yeh, Richard C <richard.c.yeh_at_bankofamerica.com>
Date: Wed 11 Oct 2006 - 22:00:12 GMT


Dear Jerome,

Sorry, I'm not running your configuration. I cannot reproduce this problem with Sybase Adaptive Server IQ 12.6 and R 2.3.1 + RODBC 1.1.7 on WinXP SP2 or Linux 2.4.21-32.0.1.ELsmp #1 SMP Tue May 17 17:52:23 EDT 2005 i686 i686 i386 GNU/Linux.

Then, in R (either platform):

> library(RODBC)
> channel = odbcConnect('DSN', believeNRows=FALSE) #
believeNRows=FALSE required for ASIQ
> b = sqlQuery(channel,"SELECT a FROM test500")
> nchar(as.vector(b[[1]]))

[1] 500 501 502

212-933-3305 / richard.c.yeh@bankofamerica.com -----Original Message-----
Subject: [R] RODBC: longest string is truncated Date: Wed, 04 Oct 2006 17:55:02 -0400
Hello R community:

I'm encountering unexpected behaviour as I download string data from MySQL using the RODBC package. The unexpected behaviour is that the last character of the string is truncated. As far as I can see, this happens when some strings are of length 501 or more.

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