Does anyone have a connection string example for using RODBC and connecting to MS SQL Server 2005 or 2008.
Thank you.
Taken from a posting to r-help:
library(RODBC)
channel <- odbcDriverConnect("driver=SQL Server;server=01wh155073")
initdata<- sqlQuery(channel,paste("select * from test_DB ..
test_vikrant"))
dim(initdata)
odbcClose(channel)
If you have to include the USERNAME and PASSWORD:
library(RODBC) # don't forget to install it beforehand
my_server="ABC05"
my_db="myDatabaseName"
my_username="JohnDoe"
my_pwd="mVwpR55zobUldrdtXqeHez"
db <- odbcDriverConnect(paste0("DRIVER={SQL Server};
server=",my_server,";
database=",my_db,";
uid=",my_username,";
pwd=",my_pwd))
sql="SELECT * FROM dbo.MyTableName" #dbo is the schema here
df <- sqlQuery(db,sql)
Try to use RSQLS package: https://github.com/martinkabe/RSQLS
Very fast pushes data from data.frame to SQL Server or pulls from SQL Server to data.frame.
Example:
library(devtools)
install_github("martinkabe/RSQLS")
library(RSQLS)
cs <- set_connString("LAPTOP-USER\\SQLEXPRESS", "Database_Name")
push_data(cs, dataFrame, "dbo.TableName", append = TRUE, showprogress = TRUE)
df <- pull_data(cs, "SELECT * FROM dbo.TableName", showprogress = TRUE)
This solution is much faster and more robust than RODBC::sqlSave or DBI::dbWriteTable.