rodbc

I am using the RODBC package which I am applying on a Microsoft SQL Server 2012. Now I have discovered a phenomenon that puzzles me. If I run the following query with the RODBC command sqlQuery, then, in R, I will get back an empty data frame with the columns Country, CID, PriceID and WindID. DECLARE @tbl_IDs TABLE ( Country nvarchar(30), CID nvarchar(5), PriceID int, WindID int ) SELECT * FROM @tbl_Ids So far, everything is fine. However, if I try to write a record to the table variable and execute DECLARE @tbl_IDs TABLE ( Country nvarchar(30), CID nvarchar(5), PriceID int, WindID int )

Does anyone know how to do this? showConnections won't list any open connections from odbcConnect. You can narrow down your search in the following way, which will return all variables of your environment currently of the class RODBC. envVariables<-ls() bools<-sapply(envVariables, function(string){ class(get(string))=="RODBC" }) rodbcObj<-envVariables[bools] Closed connections are still of the class RODBC though, so there is still a little work to be done here. We can define a function, using trycatch, that will try to get the connection info of the associated RODBC object. If it is an open

I´m trying to connect R and Teradata using RJDBC. I´ve found this link that has an example using mysql, but i´m nos sure how to do the same with teradata. library(RJDBC) drv <- JDBC("com.mysql.jdbc.Driver", "/etc/jdbc/mysql-connector-java-3.1.14-bin.jar", identifier.quote="`") conn <- dbConnect(drv, "jdbc:mysql://localhost/test", "user", "pwd") I´ve downloaded this driver: http://downloads.teradata.com/download/connectivity/jdbc-driver But i´m not sure where i should reference the directory. I know there is a teradataR package out there , but i don´t know if it really works with the R 3.0.0.

Related to https://stackoverflow.com/a/33284035/3358272 , I'm finding inconsistent behavior with pulling data from SQL Server (2014). library(RODBC) sqlQuery(.conn, "CREATE TABLE r2test ( [mychar] [NVARCHAR](16), [mynum] [FLOAT])") # character(0) sqlQuery(.conn, "INSERT INTO r2test (mychar,mynum) VALUES ('1',3.141593),('2',6.283185)") character(0) str(sqlQuery(.conn, "SELECT * FROM r2test", stringsAsFactors = FALSE)) # 'data.frame': 2 obs. of 2 variables: # $ mychar: int 1 2 # $ mynum : num 3.14 6.28 In that example we see the undesired behavior: the characters of mychar are being internally

With RODBC , there were functions like sqlUpdate(channel, dat, ...) that allowed you pass dat = data.frame(...) instead of having to construct your own SQL string. However, with R's DBI , all I see are functions like dbSendQuery(conn, statement, ...) which only take a string statement and gives no opportunity to specify a data.frame directly. So how to UPDATE using a data.frame with DBI? Really late, my answer, but maybe still helpful... There is no single function (I know) in the DBI/odbc package but you can replicate the update behavior using a prepared update statement (which should work