How to connect Ms SQL server with R on Ubuntu 16.04? - r

Question

I am unable to connect R with MS sql using RODBC as well as RJDBC
With RODBC
library(RODBC)
dbhandle <- odbcDriverConnect(paste("driver={SQL Server};server=", sname, ";database=",
dbname, ";uid=", user,";pwd=",password, sep = ""))
res <- sqlFetch(dbhandle, client.table_name)
The error I am getting is:
Warning messages:
1: In odbcDriverConnect(paste("driver=SQL Server;server=", sname, ";database=", :
[RODBC] ERROR: state 01000, code 0, message [unixODBC][Driver Manager]Can't open lib 'SQL Server' : file not found
2: In odbcDriverConnect(paste("driver=SQL Server;server=", sname, ";database=", :
ODBC connection failed
Also I have tried with RJDBC
library(rJava)
library(RJDBC)
drv <- JDBC(driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver",
classPath="/home/****/sqljdbc_4.2/enu/jre8/sqljdbc42.jar")
conn <- dbConnect(drv, paste0("jdbc:sqlserver://",client.hostname),
user=client.username , password=client.password, dbname = client.dbName)
The error is
Error in .jcall(drv#jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1], :
com.microsoft.sqlserver.jdbc.SQLServerException: The driver could not establish a secure connection to SQL Server by using Secure Sockets Layer (SSL) encryption. Error: "SQL Server did not return a response. The connection has been closed. ClientConnectionId:253fd8d2-8e60-40fb-96b0-220745818166".

Answer 1

I got the same error when i put below code for connection to MSSQLSERVER
library(RODBC)
dbconnection <- odbcDriverConnect("Driver=SQL Server;Server=192.168.76.60; Database=kaggle;Uid=sa; Pwd=1234")
It throws to me
[unixODBC][Driver Manager]Can't open lib 'SQL Server' : file not found
why this Error thrown?
Answer: when we fail to put proper ODBC version name on Driver value.
From where we can get Driver ODBC version name
inside "/etc" folder you will find "odbcinst.ini" file open it and check the version name
[ODBC Driver 17 for SQL Server]
Description=Microsoft ODBC Driver 17 for SQL Server
Driver=/opt/microsoft/msodbcsql17/lib64/libmsodbcsql-17.1.so.0.1
UsageCount=1
so i got ODBC Driver name from here , it will be "ODBC Driver 17 for SQL Server"
Then i modify my connection string
library(RODBC)
dbconnection <- odbcDriverConnect("Driver=ODBC Driver 17 for SQL Server;Server=192.168.76.60; Database=kaggle;Uid=sa; Pwd=1234")
And it works fine