similar to: odbcQuery , memory.size

New to R, sorry if one or either of these is an inappropriate list for a question like this below; please let me know if this is a general help question. Jill Willie Open Seas Safeco Insurance jilwil at safeco.com -----Original Message----- From: WILLIE, JILL Sent: Thursday, January 25, 2007 2:27 PM To: r-help at stat.math.ethz.ch Subject: reducing RODBC odbcQuery memory use? Basic

1. Can I avoid having RODBC use so much memory (35 times the data size or more) making a data.frame & then .rda file via. sqlQuery/save? 2. If not, is there some more appropriate way from w/in R to pull large data sets (2-5GB) into .rda files from sql? [R] reducing RODBC odbcQuery memory use? From: WILLIE, JILL <JILWIL_at_SAFECO.com> Date: Thu 25 Jan 2007 - 22:27:02 GMT

Hello, I am new to the RODBC package, but I have looked over the PDF as well as a few websites that go over the SQL language. I can connect to my database fine using >channel<-odbcConnect("Oracle ODBC") # then am prompted to enter my user id and password After that I'd like to use the odbcQuery function and the SQL statement: SELECT * FROM table_name WHERE SAMPLE_YEA LIKE

Dear R-users with a bit of grief I had to repeat an extensive analysis because I did not suspect (and therefore did not read the documentation) that round was implemented as "for rounding off a 5, the IEC 60559 standard is expected to be used, 'go to the even digit'", resulting in round(1.5) = 2 round (2.5) = 2. As a non-mathematician I am both puzzled and intrigued by

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?

I have compiled and linked a 64 bit version of R (R 2.9.2) and the corresponding unix ODBC 64 bit package When issuing a SqlQuery, I get the following error > library(RODBC) > channel <- odbcConnect("OraLSH", <user>, <password>) > sqlQuery(channel,"select sysdate from dual") Error in .Call(C_RODBCFetchRows, attr(channel, "handle_ptr"), max,

Asterisk Ready. *CLI> -- Executing route("SIP/7408-02e3", "370263") in new stack -- odbcquery: query=370263 > Query = 370263 : SQLcmd = select routing, ring_timer from ddi_pool where ddi_inbound = '370263' Urgent handler > app_route: Query Successful! -- Varname= 55 -- odbcquery: set route 721017101 -- odbcquery: set timer 15

I have compiled and linked a 64 bit version of R (R 2.9.2) and the corresponding unix ODBC 64 bit package When issuing a SqlQuery, I get the following error > library(RODBC) > channel <- odbcConnect("OraLSH", <user>, <password>) > sqlQuery(channel,"select sysdate from dual") Error in .Call(C_RODBCFetchRows, attr(channel, "handle_ptr"), max,

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

Dear all, I would like to create a stacked area chart to show the development of species biomass over time. Since it is intended for publication I need to prepare in black and white. I have tried to modify the "stackedPlot" function submitted to this list by Christian Lasarczyk on Tue, 16 Aug 2005 using shading lines rather than colors to distinguish between the species.

Dear List, Would anyone know how to perform prepared queries with ROBC ? I had a shot with some of the internal (non-exported) functions of the package but ended up with a segfault, so I prefer asking around before experimenting further... Thanks, Laurent

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

Hello, I am new to R progaming and have just started using this program since last week. What i want to achieve is to use R to determine patterns in sales/ customer complaint etc. information located in a mysql database. I am not sure how to approach this or which technique i should use to do so. However, i had proceeded to add a dataset to RStudio using the following code: library(RODBC) 

Dear list, RODBC is mostly working very well on Windows XP talking to MS SQL Server. However, when trying to retrieve a result set in repeated batches the first batch returns results ok, but then subsequent calls return no data (see code below). I tried setting believeNRows=FALSE both in odbcConnect() and in sqlGetResults() but this doesn't appear to make any difference. Also odbcFetchRows()

Hello everyone, I have just gone through the installation process to add commands ODBCexec and ODBCquery to the extensions.conf. However I am receiving an error in asterisk "No application 'ODBCquery' for extension (incoming,33,2)". I have installed unixODBC-2.2.11 and myODBC 3.51. I have gone through the instructions as per

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

You could construct your SQL statement as a character string using paste() and pass this as an argument to sqlQuery. Maybe something like this will work for you: >data1<-2.5 >sql.statement <- paste("SELECT * FROM somewhere WHERE something=", data1, ";", sep="") >library(RODBC) >channel <- odbcConnect(...) >sqlQuery(channel, query =

Hello! I'm running Samba 3.0.0 with Openldap 2.1.22. Samba is my PDC and I'm using ldapsam as backend. Nearly everythings works, but I have a public share [tmp] which should be accessible without authentication from all clients even if they are no domain members. I think, my share definition is o.k. in smb.conf but if I click on the Samba server symbol on a client (Microsoft Windows

Howdy, I'm trying to use R to access Oracle 8i using the RODBC package On Linux Red Hat 7.3. Specs R version 1.51 Driver: Easysoft ODBC - Oracle driver Driver Manager: unixODBC I get the following error when trying to executing RODBC commands. Can anybody give me pointers as to what I'm missing or doing wrong > library(RODBC) > channel <- ("DSNName") >

Hi WizaRds, I'm experiencing a problem connecting to an Oracle 10g database via RODBC (I'm getting this on Microsoft XP). The same SQL queries via PL/SQL Developer work just fine, but when I pump the query through sqlQuery in RODBC then I get a data frame back with 0 rows. I cut the query down alternating between PL/SQL and RODBC until I figured that it's some kind of row limit or