SQL Server RODBC Connection

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rjdbc sql server

Does anyone have a connection string example for using RODBC and connecting to MS SQL Server 2005 or 2008.

Thank you.

library(RODBC)
dbhandle <- odbcDriverConnect('driver={SQL Server};server=mysqlhost;database=mydbname;trusted_connection=true')
res <- sqlQuery(dbhandle, 'select * from information_schema.tables')

[PDF] RODBC, A connection to a specific database is called a Data Source Name or DSN (see https: types to handle currencies, e.g. money in Microsoft SQL Server. Decimal​  RODBC can use a DSN to connect to a database; the RODBC odbcConnect() function accepts a DNS name as an argument. We can, however, specify everything, including the ODBCdriver, right in the function call and do away with the DSN entirely. Such a connection is sometimes called a “DSN-less connection”.

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)

[PDF] rodbc, The RODBC package provides access to databases (including Microsoft Access and Microsoft SQL Server) through an ODBC interface. The primary functions are odbcConnect(dsn, uid="", pwd=""), Open a connection to an ODBC database. Setting up R to connect to SQL Server . Ian Pylvainen as well as the specific section on SQL Server. Connecting to databases using RODBC on shinyapps.io

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)

Database Access, RODBC can use a DSN to connect to a database; the RODBC odbcConnect() function accepts a DNS name as an argument. We can, however,  Please refer to MS SQL Server documentation to obtain the correct driver. CTGDIJ109E Unable to connect to the database (This driver is not configured for integrated authentication.). Verify that all the database connection parameters are correctly specified.

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.

Querying SQL Server Data from R Using RODBC, Setting up R to connect to SQL Server. Ian Pylvainen June 05, 2020 01:59. Querying a database from a server running R requires three things: Network security  The goal of the odbc package is to provide a DBI-compliant interface to Open Database Connectivity (ODBC) drivers. This allows for an efficient, easy to setup connection to any database with ODBC drivers available, including SQL Server, Oracle, MySQL, PostgreSQL, SQLite and others.

First You have to Create/configure DSN (ODBC connection with specific DB)

Then install RODBC library.

library(RODBC)
myconn <-odbcConnect("MyDSN", uid="***", pwd="*******")

fetchData<- sqlQuery(myconn, "select * from tableName")
View(fetchData)
close(myconn)

Setting up R to connect to SQL Server – RStudio Support, database with ODBC drivers available, including SQL Server, Oracle, MySQL, All of the following examples assume you have already created a connection con . The odbc package is often much faster than the existing RODBC and DBI​  Azure Active Directory and the connection string. pyODBC uses the Microsoft ODBC driver for SQL Server. If your version of the ODBC driver is 17.1 or later, you can use the Azure Active Directory interactive mode of the ODBC driver through pyODBC. This interactive option works if Python and pyODBC permit the ODBC driver to display the dialog.

odbc - Databases using R, require(RODBC). #open the ODBC connection. ch <- odbcConnect("​ODBCDriverName"). ##### Alternative ODBC connection for Microsoft SQL Server. SQL Server Data Tools (SSDT) and SQL Server Management Studio (SSMS) are 32-bit applications and only install 32-bit files, including the 32-bit version of the wizard. Step 1 - Select the data source The ODBC drivers installed on your computer aren't listed in the drop-down list of data sources.

This is a simple example using the RODBC package to return a , There are several options to connect to SQL Server from R and several libraries we can use: RODBC, RJDBC, rsqlserver for example. For the  Some applications have their name statically set in the connection string used to connect to the SQL Server. Similar to hostnames, we find them in configurations files and source code. It’s actually pretty rare to see a logon trigger restrict access by application name, but we have seen it a few times.

Making Data Analytics Simpler: SQL Server and R, The RODBC package. The DBI system, using dplyr, dbplyr and odbc . Both of these create a connection, using  A successful return has class "RODBC", and attributes including. connection.string. the full ODBC connection string. case. the value of case. id. a numeric ID for the channel. believeNRows. the value of believeNRows. rows_at_time. the value of rows_at_time.

Comments
  • Most connection string questions can be answered at connectionstrings.com
  • I'm trying this but am getting error "SQL Server does not exist or access denied." Do you have to enter a username/password? Also I have a dsn on my remote site but this does not seem to be mentioned. The RODBC docs were not all that clear to me
  • The example uses the option "trusted_connection=true" for automatic windows authentication. You can also provide username=... and password=... as parameters in the connection string.
  • actually for me username and password did not work - i had to provide the parameters uid=...; and pwd=...;.
  • NOTE I had to use the IPV6 Ip address instead of the server name to get this to work.
  • Just for what it's worth, if you are familiar with the DBI interface, the newer odbc package is DBI-compliant and an alternative to the RODBC package.
  • How would you do this from Mac OSX? Same way? Is that possible, with the windows login requirement?
  • Seems unlikely this would work using same machine with MS's SQL Server on a Mac, but with some sort of remote access terminal arrangement, perhaps.