similar to: Using RODBC to use SQL queries

Displaying 20 results from an estimated 1100 matches similar to: "Using RODBC to use SQL queries"

2011 Dec 20
1
RODBC Error: 'getCharCE' must be called on a CHARSXP
I am trying to connect to an internal database and use the sqlQuery command to reduce and retrieve data using the following code: channel <-odbcConnect("some_dsn", uid="", pwd="") txt<-'SELECT Date, Region, Price FROM TableXYZ WHERE Type="Domestic"' sqlQuery(channel, cat(txt,"\n"),errors=TRUE,) close(channel) However, I get the
2007 Aug 14
4
Import of Access data via RODBC changes column name ("NO" to "Expr1014") and the content of the column
Dear all, I have some problems with importing data from an Access data base via RODBC to R. The data base contains several tables, which all are imported consecutively. One table has a column with column name "NO". If I run the code attached on the bottom of the mail I get no complain, but the column name (name of the respective vector of the data.frame) is "Expr1014" instead
2012 Aug 27
1
Querying sqlite through RODBC causes R to crash
Dear R-SIG-Debian, while trying to query data from an SQLite database through RODBC on Debian testing, R crashes with the following message: library(RODBC) con3 <- odbcConnect("test3") # 'test3' being an ODBC datasource configured with SQLite3 driver, # but the same happens with SQLite driver sqlQuery(con3, "select * from test") # 'test' being any table
2008 Mar 18
1
odbcQuery , memory.size
Dear R cracks I am trying to fetch 38 Tables from 38 ESRI Geodatabases through an ODBC connection. I stored the 38 channels in a list and the 38 tablenames in an other list. With a for(i in 1:38) .... sqlFetch(....) I try to read the tables into a third list. But always after a certain amount of rounds (mostly 16) i get Fehler in odbcQuery(channel, query, rows_at_time) : Calloc konnte
2008 Aug 08
2
Tick marks that correspond with bars on barplot
Hello all, I have created a barplot that shows change in hardwood/softwood density from 1965 to 2005 in 5 year periods (1965,1970, etc). I would like to have an X-axis where the labels for the years line up after every two bars in the plot (there is one bar for hardwood, and another for softwood). Below is my script: density<-read.table("F:\\Megan\\Vtest.csv", header=TRUE,
2009 Sep 21
1
RODBC : using and passing queries that use " in some arguments
Dear R users, I am trying to connect R to data that is in a Access Database but I have problem with the construction of queries using special characters. I am using RODBC package. The following is working : > MyQuery<-paste("SELECT first( (DateHeure) ) , avg(NNO3_AT322_OUT_moy) AS Cond FROM Colonne_3 ") > Col3<-sqlQuery(con, query=MyQuery) > Col3
2008 Jun 25
3
gap.boxplot error message?
Hello, When I put in the following script line: gap.boxplot(CLI3, CLI4, CLI5, CLI6, CLI7, gap=list(top=c(8000,280000), bottom=c(0,250)), range=50, outline=TRUE, par(ask=FALSE) I get a '+' telling me I am missing something. I have tried adding ')', 'width=NULL', etc and then I get this error: Error: unexpected symbol in: "gap.boxplot(CLI3, CLI4, CLI5, CLI6, CLI7,
2008 Jul 28
4
RODBC to query an Oracle table
Hello all, I am having trouble running a count function in R using RODBC to query a table I created in Oracle. It may very well be that my SQL coding is incorrect; I just started learning it. But if someone could point me in the right direction or tell me if I am going about this the correct way that would be greatly appreciated! The script I have right now is: >require(RODBC)
2008 May 23
1
Line Breaks and Axis breaks..
Hello all, I have two questions. One probably has a very simple answer but I have checked the FAQ, other websites and still have not found an answer. I am new to using R. My very simple question is how to do line breaks when creating an axis title (xlab) ? I have a few that are too long and they get cut off... I found on the internet the "/n" function but I think I must be using it
2008 Jun 24
2
changing scale range after an axis break
Hello, I am constructing a boxplot but have a very wide range of values (zero - ~28000). I have placed an axis break at the 8000 mark but would like to have a different scale above the break that ranges from 8000-28000. Right now my axis is so large that the boxplots are only represented as lines with the outliers above. Does anyone know where I could find code that explains how to do this?
2007 Jan 30
0
calloc bug in RODBC 1.1-7 and later?
I'm trying to load Affy Annotation data from an Access database into R using RODBC. This has worked fine for quite some time. The bug seems to be correlated to RODBC versions 1.1-7 and later. Works fine: R 2.2.0 with RODBC 1.1-4; R 2.3.0 or R 2.4.1 with RODBC 1.1-6 Fails: R 2.3.1 with RDOBC 1.1-7; R 2.4.1 with RODC 1.1-7 or 1.1-8 Details ===== This works fine: Version 2.2.0
2008 May 05
2
RODBC and schemas
I have found that the "schema.table" syntax used in Postgresql (and Oracle) does not work directly with RODBC. This works library(RODBC) con<-odbcConnect("mydb") d<-sqlQuery(con,"select * from meso.trees") However this does not. d<-sqlFetch(con,"meso.trees") Error in odbcTableExists(channel, sqtable) : ?meso.trees?: table not found on channel
2002 Sep 04
1
Passing dynamic sql statement to RODBC functions
Hi, Does anyone know how to pass dynamic sql statement to RODBC function "odbcQuery()" or "sqlQuery()"? eg.: under R session, I did: >library(RODBC) >channel<-odbcConnect(...) >data1<-2.5 >data2<-5.0 I want to construct the INSERT sql statement using variables "data1" and "data2" and pass this statement to odbcQuery() . Can I do this?
2012 Aug 24
1
2 (related) problems with RODBC in 64 bit Windows
Hi all, I am encountering an RODBC problem in R 2.15.1 in windows 64 bit which I do not encountered in the same set up in windows 32 bit (the latest binary version of RODBC in both cases from the same depository gotten by install.packages(‘RODBC’), Oracle ODBC client software installed in 64 and 32 bit respectively) 1. The code looks like library(RODBC) credentials <-
2010 Feb 16
1
RODBC missing values in integer columns
Hello, We are having some strange issues with RODBC related to integer columns. Whenever we do a sql query the data in a integer column is 150 actual data points then 150 0's then 150 actual data points then 150 0's. However, our database actually has numbers where the 0's are filled in. Furthermore, other datatypes do not have this problem: double and varchar are correct and do not
2008 Jul 03
1
RODBC Access limit?
I have been using RODBC to connect to an Access database to capture data to create plots. Recently I found incomplete charts. Upon investigation I discovered that the data retrieved stopped at 3276 rows (records) out of a table with over 5600 records. I've tried changing "max","buffsize", and "rows_at_time" but it still returns only 3276 rows. Is this a
2018 May 12
2
Formula/heuristic for estimating packet size?
Thanks for the input! --Albin On Sat, May 12, 2018 at 6:00 PM, Orestes Zoupanos <oresteszoupanos at hotmail.com> wrote: > Hi Albin! > > There may be some details at: https://tools.ietf.org/html/rfc7845#section-6 > > Otherwise, I hope someone else on this list might be able to give a better > formula for estimating packet size. > > Regards, > > Orestes >
2018 May 12
1
Formula/heuristic for estimating packet size?
Note also that the packet size you give the encoder also acts as an absolute max on the bitrate. For example, if you ask for 32 kb/s VBR but give a max packet size of 120 bytes, then you're absolutely certain the bitrate will never go over 48 kb/s. Jean-Marc On 05/12/2018 12:42 PM, Albin Stigö wrote: > Just a follow up... I guess I was a bit confused about the VBR > setting. I realise
2009 Jan 30
1
run query using rexcel runrfile and rodbc sql query
Hi, I'm using R-2.8.1 for windows. I wrote a script calls the RODBC package to run sql queries against an oracle database. It runs fine when run from the rconsole and returns a data.frame with a summary for a set of experiments. I want to run this script using the rinterface.RunRFile command in an excel plugin, using the rexcel package. When I run the code from my excel plugin I
2018 May 12
2
Formula/heuristic for estimating packet size?
Hello, I'm working on an Opus encoder block for GNUradio (a signal processing toolkit). I was wondering if there's some formula/heuristic for estimating the packet size average case / worst case given a certain encoder setting (assuming VBR). I need to provided a reasonable estimate to the GNUradio memory allocator. --Albin