Not able to use RSQLserver - sql-server

Question

I am trying to use RSQLServer and first installed RSQLServer using R studio. then I am trying to use it like this.
library(RSQLServer)
library(DBI)
drv <- dbDriver("SqlServer")
conn <- dbConnect(drv, url = "Server=**MYSERVERURL;database=DBName;trusted_connection=yes;")
res <- dbSendQuery(conn, "SELECT TOP 100 * FROM test_table (NOLOCK)")
str(res)
But I am getting error everytime. Am I missing something? The Error is Object not found.? Do I need to configure any driver (probably jTDS) first? If yes, can anyone share steps to do that? Thanks.
Error text
> conn <- dbConnect(drv, url = "Server=**MYSERVERURL;database=DBName;trusted_connection=yes;")
Error in dbConnect(drv, url = "Server=**MYSERVERURL;database=DBName;trusted_connection=yes;") :
object 'drv' not found
> res <- dbSendQuery(conn, "SELECT TOP 100 * FROM test_table (NOLOCK)")
Error in dbSendQuery(conn, "SELECT TOP 100 * FROM test_table (NOLOCK)") :
object 'conn' not found
> str(res)
Error in str(res) : object 'res' not found
Note: name of table and database changed.

Answer 1

Try to use
drv <- RSQLServer::SQLServer()
instead of
drv <- dbDriver("SqlServer")
You must have downloaded and installed the jTDS driver.
For Windows authentication you have to install a DLL too:
If you intend to use integrated security (Windows Authentication) to
authenticate your server session, you will need to download jTDS and
copy the native single sign on library (ntlmauth.dll) to any
location on your system’s PATH (e.g. Sys.getenv("PATH") ).
Source: https://cran.r-project.org/web/packages/RSQLServer/RSQLServer.pdf
Your JDBC connection string looks strange, please make sure your JDBC connection string is correct.
If you are using the jTDS driver the connection string syntax is
different from the JDBC driver of Microsoft
The jTDS syntax is specified here:
http://jtds.sourceforge.net/faq.html#urlFormat
jdbc:jtds:<server_type>://<server>[:<port>][/<database>][;<property>=<value>[;...]]
where is "sqlserver".
The Microsoft JDBC syntax is specified here but I think it does not work because RSQLServer is based on the cross-platform jTDS JDBC driver
https://msdn.microsoft.com/en-us/library/ms378428(v=sql.110).aspx
Example:
jdbc:sqlserver://localhost;databaseName=AdventureWorks;integratedSecurity=true;
Replace the "localhost" part with the IP address or server name like "myServer.honey.moon.com", in case of a non-standard IP port (not 1433) of the instance use "localhost:1234".
You can figure out the IP port by looking at the connection string you use to connect to the database via SQL Server Management Studio!