search for: dbgetqueri

(I think this is being caused by the new methods package in RC.) In the RC (March 24) some of my packages are generating a Note Note: Method with signature "MySQLConnection#integer" chosen for function "coerce", target signature "TSMySQLConnection#integer". "dbObjectId#integer" would also be valid This is coming from a call to dbGetQuery() in package

Hi all, I just noticed (the hard way of course) that when a query returns 0 rows, the columns in the resulting data.frame get dropped as well. See the following example code (where conn is an active connection to an SQLite db): > dbGetQuery(conn, "select 1 as hey, 2 as ho where 1") hey ho 1 1 2 > dbGetQuery(conn, "select 1 as hey, 2 as ho where 0") data frame

Full_Name: Christian Hoffmann Version: 2.4.0 OS: Win 2000 Submission from: (NULL) (193.134.202.252) Database queries using the combination DBI + ROracle are handicapped by quirks in the pipeline between the textual representation of the query and the database engine Oracle. Comments and linefeed at start are interfering: dbGetQuery(conn, query): works: dbGetQuery(conn, "select *

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:") >

Rjdbc consistently gives me an execution error with postgresql 9.0s JDBC4 driver. It's probably something trivial so am including my code below: library("RJDBC") param <- 249 param2 <- 188129 postgres <- JDBC("org.postgresql.Driver", ".m2/repository/postgresql/postgresql/9.0-801.jdbc4/postgresql-9.0-801.jdbc4.jar") con <- dbConnect(postgres,

Hi there, When I extract data from SQLite to R, the data types (or modes) of the extracted data seems to be determined by the value of the first row. Please see the following example. When I put the missing values first, the column extracted is of the mode character. > str(dbGetQuery(sql.industry, + "select pya_var from annual_data3 + order by

The double quotes are required by SQL if a name is not of the form letter-followed-by-any-number-of-letters-or-numbers or if the name is a SQL keyword like 'where' or 'select'. If you are doing this from a function, you may as well quote all the names. -Bill On Fri, Oct 2, 2020 at 6:18 PM Philip <herd_dog at cox.net> wrote: > The \?2B\? worked. Have no idea why. Can

Hi Philip, You've probably realized by now that R doesn't like column names that start with a number. If you try to access an R-dataframe column named 2B or 3B with the familiar "$" notation, you'll get an error: > library(DBI) > library(RSQLite) > con2 <- dbConnect(SQLite(), "~/R_Dir/lahmansbaseballdb.sqlite") > Hack12Batting <-

RSQLite 0.6-7 has been uploaded to CRAN and should hit a mirror near you in the next few days. This version changes the behavior of the dbGetQuery method to make it more consistent with dbSendQuery. Specifically: 1. dbGetQuery now closes a complete result set as dbSendQuery does. 2. If there is an incomplete result set open, dbGetQuery still opens a new temporary connection, but now issues

RSQLite 0.6-7 has been uploaded to CRAN and should hit a mirror near you in the next few days. This version changes the behavior of the dbGetQuery method to make it more consistent with dbSendQuery. Specifically: 1. dbGetQuery now closes a complete result set as dbSendQuery does. 2. If there is an incomplete result set open, dbGetQuery still opens a new temporary connection, but now issues

This is really a feature of SQL, not R. SQL requires that you double quote column names that start with numbers, include spaces, etc., or that are SQL key words. E.g., > d <- data.frame(Order=c("sit","stay","heel"), Where=c("here","there","there"), From=c("me","me","you")) >

Hello, I'm new to R so this is probably a simple question for somebody. I have an RScript that reads a CSV on the disk using read.table(...). It then does a boxM test using that data. However, I'm now trying to load the same data via an SQL command, but I can't seem to get the data structure defined so R will like it -- using the included "iris" dataset. I've tried

I'm new to using sql so I'm having difficulties (and worries) in adding a new column of data to a table I have. Its a very large file (around 5 Gb) which is why I'm having to use SQL I have a table with variables ID, IDrec and IDdes and the variables IDrec and IDdes give a mapping of some other values but the other values are associated with the ID variable (think of IDrec and IDdes

Hi all, I've been playing with ROracle (0.5-9) for a few days and I can't wrap my mind around this one. Here's a sample of my R (2.4.0) session. my.df<-data.frame(prd_id=c(123,456),vol_factor=c(.123,.456)) > my.df prd_id vol_factor 1 123 0.123 2 456 0.456 > library(ROracle) Loading required package: DBI >

Hi All, This might be simple question, I need to retrive data for modelling from the databases. Eveytime date values changes so I countnot fix date value in the code, it is required to pass as parameter. When I pass the date as parameter, it throws error. (ERROR: column "start_dt" does not exist Position: 285) My script is as below, please guide me where am I going wrong? All parameters

Hello, I'm accessing a MySQL database from inside R and had a problem with a function. In the database, there is data from years 1985 to 2007 that I would like to retrieve. I can easily get the data from one year by the following: info1985=dbGetQuery(con, statement='the SQL query') Inside the statement, I have a column that is set to the desired year (e.g. table.column=1985) through

Hola. Tengo un problema incómodo. En el servidor de BD, existe esta tabla: SELECT * FROM motivodebito 1;"Débito presentado extemporáneamente." 2;"Corresponde la aplicación del nomenclador GCBA vigente al momento de la prestación." 3;"No registra convenio de prestaciones vigente al momento de la prestación." 4;"Débito presentado sin documentación ni

Please always cc the list... the group usually has better answers than any one person, and I don't do private consulting on the net. For future reference, there is also an r-sig-db mailing list where this question really belongs. Since I almost never use jdbc, I would need a reprex (hint you are ignoring my advice... a good way to get ignored), which this still isn't. There is probably

I got the following after running succesfully through this loop 28 million times... the loop opens text files in a directory and inserts line by line into a database... *** caught segfault *** address 0xc0000010, cause 'memory not mapped' Traceback: 1: .getGeneric(f, where, package) 2: getGeneric("coerce", where = where) 3: as(obj, "integer") 4:

Hello, I would like to compress a long string (character vector), store the compressed string in the text field of a SQLite database (using RSQLite), and then load the text back into memory and decompress it back into the the original string. My character vector can be compressed considerably using standard gzip/bzip2 compression. In theory it should be much faster for me to compress/decompress