How to connect R to vertica

choisika

Hi 

 

I want to connect R and vertica

 

 

but, I don't know everything

 

each download R and vertica??

 

and what is the next job??

 

please help me ... 

Casey_S

Hi choisika,

 

There are a lot of different client drivers you can use to connect to Vertica from R. So if the client driver I use in my example doesn't work for your needs, then you can try using another. RODBC is the first one that jumps to my mind, and is the one I've used a lot with my Vertica instances. RJDBC is another option, but I've found it to be very slow for my work loads-- although it might work fine for you.

 

Here are the things you'll need to do:

 

1. Download the Vertica Client Drivers from my.vertica.com.
2. Setup an ODBC connection.
• Docs: https://my.vertica.com/docs/7.2.x/HTML/index.htm#Authoring/ConnectingToHPVertica/InstallingDrivers/CreatingAnODBCDataSourceNameDSN.htm
3. Install the R library you want to use to make your client connection. For this demonstration I'll use RODBC.

• install.packages('RODBC')

4. In your R code create a database connection and execute a query. (Check out the RODBC docs for more details about doing this. https://cran.r-project.org/web/packages/RODBC/vignettes/RODBC.pdf)

5. # Here is a short example of making a database connection
   
   library(RODBC)
   
   # Open a client connection with the database
   # Note: It is not recommended to use your password in plaintext
   vertica <- odbcDriverConnect("driver={/opt/hpe/odbc/lib64/libverticaodbc.so};server=node01.example.com;database=my_db;Uid=dbadmin;Pwd=123password")
   
   # Run a query
   sample_query <- sqlQuery(vertica, "SELECT * FROM foo")
   
   # Don't forget to close your connection
   odbcClose(vertica)

 

The tricky part of doing this is setting up the ODBC connection. Make sure to carefully read the instructions.

 

If you have any other questions or run into another issue, please let me know.

 

 

-C

choisika

Hi Casey_S

 

Thank you for your kindress

 

I'll try 

 

Have a nice day~!!

heison

How can you locate the Driver {/opt/hpe/odbc/lib64/libverticaodbc.so} file?

SruthiA

Hi Heison,

           Currently it is located at /opt/vertica/lib64 location in 9.1.x. 

[[email protected] lib64]$ cd /opt/vertica/lib64/
[[email protected] lib64]$ ls
libverticaodbc.so
[[email protected] lib64]$ pwd
/opt/vertica/lib64
[[email protected] lib64]$