similar to: sqldf syntax

I am trying to exclude integer values from a small data frame 1, d1 that have matching hits in data frame 2, d2 (Very big) which involves matching those hits first. I am trying to use sqldf on the df's in the following fashion: df1: V1 12675 14753 16222 18765 df2: head(df2) V1 V2 13647 rd1500 14753 rd1580 15987 rd1590 16222 rd2020.....

trying to structure sql to merge two datasets. structure follows: dbs.possible.combos (all possible combinations of dates and places) Date Place 1/1/10 N-01 1/1/10 S-02 1/2/10 N-01 1/2/10 S-02 etc... dbs.aggregate (the raw data aggregated by date and location) Date Place Days 1/1/10 N-01 6 1/1/10 S-02 10 1/2/10 S-02 5 Trying to merge so I look-up the values for each possible combo dbs.final

Hi, I am running a query using sqldf() [package : sqldf]. The query is:- userid <- 5 taskid <- 5 tab1 <- fn$sqldf("SELECT tobiiEvents.data1, tobiiEvents.data2, events.`timestamp` as tobiiTime FROM tobiiEvents INNER JOIN events ON events.eventid = tobiiEvents.eventid WHERE tobiiEvents.subtype = 'MOUSE' AND tobiiEvents.userid = 5 AND tobiiEvents.taskid = 5 ORDER BY

Hi, I am new to R and trying to migrate from SAS. I am trying to use sqldf to create a new table from existed table and change some of the columns. I have table called DataOld with columns commodity, rate and total and I am trying to create new table called DataNew with columns commodity, ratenew and totalNew. > sqldf("create table datanew as select commodity, ratenew as rate * 10, >

I'm trying to use sqldf to query for the earliest date of a blood test when patients have had multiple tests in a given year. My query looks like this: test11 <- sqldf("select CHILD_ID, min(SAMP_DATE) from lab group by CHILD_ID having extract (year from SAMP_DATE) = 2011") SAMP_DATE has class "date." I get the error

Dear R-Listers, I am a Windows user (R 2.6.2) using the development version of sqldf to try to read a 3GB file originally stored in .sas7bdat-format. I convert it to comma-delimited ASCII format with StatTransfer before trying to import just the rows I need into R. The problem is that I get this error: > f <- file("hugedata.csv") > DF <- sqldf("select * from f where

Hi All, I am having trouble executing SQL statements on a few dataframes, but the funny thing is that I am able to execute the statement on some other dataframes. To test, I have 2 very small dataframes (6 rows and some columns). One is 'lessliq', the dput is given below. > dput(head(lessliq)) structure(list(V1 = c(50464677L, 50464846L, 50432581L, 50426614L, 50504329L, 50504735L), V2

I have a (very big - 1.5 rows) dataframe with a (POSIXt" "POSIXlt") column h (hour). Surprisingly, I cannot calculate a simple aggregate over the dataframe. > n.h1 = sqldf("select distinct h, count(*) from x group by h") Error in sqliteExecStatement(con, statement, bind.data) : RS-DBI driver: (error in statement: no such table: x) In addition: Warning message: In

Dear list,   Dear list, I am using read.csv.sql() from the sqldf package to read individual-based data from a csv file that is too large for R. My original file contains a column called “ID” that identifies the individual. I would like to read in data for only one individual at a time, for example "Bobby". read.csv.sql("filename",sql = 'select * from file where ID =

Dear all i?m working with a program i?ve made in R (using functions that others created) to run my program i need a sample. if i generate the sample using for example, rnorm(n, mu, sigma) i have no problem but if i obtain a sample from a column in excel and i copy it, the program says that there is a mistake: it says "Error en `[.data.frame`(data, indices) : undefined columns

Should functions or the user be responsible for coercing an S4 object argument containing the proper object (and thus should below be considered a bug in the packages or not)? The example is with RSQLite but the same thing happens with RMySQL, and other DBI packages. > library("RSQLite") Loading required package: DBI > m <- dbDriver("SQLite") > con <-

I'd like to search for a particular string in an SQLite database using RSQLite, but I'm running into problems constructing the query properly, because of embedded quotes and parens in the string. Is there a function that escapes these for me, or some other fixup that would let me do the queries below? In the real situation I don't have control over what strings get searched for.

Dear list, I want to insert a recorde into a SQLite table by dbGetQuery(), but there is a problem when the value contains quotation mark. > dd<-data.frame(txt=c("having both ' and \" in character.","OK")) > library(RSQLite) Loading required package: DBI > con<-dbConnect(dbDriver("SQLite"),":memory:") >

Hello everyone, I have a problem when loading the library: IlluminaHumanMethylation27k.db I installed the package from zip (from the Bioconductor website), and also installed all the packages it asked for. It went all succesfull: "package 'IlluminaHumanMethylation27k.db' successfully unpacked and MD5 sums checked" But when I am trying to load this library I get an error:

Greetings, I am new to R and have some background knowledge about SQL. I'd like to know whether there is a way to manipulate the R datasets (or data frames) using SQL statements. For example, I have two data frames and both of them have a column called "id", then I want to join this two data frames into one. In SQL, we can just simply use the join comment. What should we do in R?

Dear R-Users, I need a very fast and reliable database solution so I try to serialize a data.frame (to binary data) and to store this data to an SQLite database. This is what I tried to do: library(RSQLite) con <- dbDriver("SQLite") db <- dbConnect(con, "test") dbSendQuery(db, 'CREATE TABLE frames("simID" INT, "data" BLOB)') data.bin <-

Big thanks. newXMLNode works great. Wonder why it is not included in the documentation. There is newXMLDoc and newXMLNamespace, but no mention of newXMLNode. Stephen From: Ben Tupper [mailto:btupper at bigelow.org] Sent: Wednesday, March 21, 2018 6:18 PM To: Bond, Stephen Cc: r-help Subject: Re: [R] how to add a child to a child in XML Hi, XML doesn't use the `$` to access child nodes.

However, trying this on Linux Mint gave package ?installr? is not available (for R version 3.4.2) Has the package not been updated yet? JN Try the installr package. It was designed for this purpose. On Fri, Nov 10, 2017 at 11:49 AM, Bond, Stephen <Stephen.Bond at cibc.com> wrote: > Is there a utility which will allow me to upgrade my R version and update all packages from the old

Hi, It's a reasonable question. The answer is that it actually is included, but there are many instances across packages where multiple functions are documented on a single help page. The following brings up such a page... (for XML_3.98-1.9) > library(XML) > ?newXMLNode You can see the same on line... https://www.rdocumentation.org/packages/XML/versions/3.98-1.9/topics/newXMLDoc

Just to clarify and hopefully catch the attention of the maintainer: The newXMLNode function is not mentioned in: https://cran.r-project.org/web/packages/XML/XML.pdf which supposedly describes all functions in the package. Stephen From: Ben Tupper [mailto:btupper at bigelow.org] Sent: Thursday, March 22, 2018 10:40 AM To: Bond, Stephen Cc: r-help Subject: Re: [R] how to add a child to a