@miru miro​ :

It seems like there were some warnings when trying to install the RMySQL package on Databricks, and the package was not installed.

The warnings suggest that there were issues accessing the repository from which the packages were being downloaded. Specifically, the following warning indicates that there was an issue accessing the PACKAGES index file:

Warning: unable to access index for repository https://cloud.r-project.org/src/contrib: cannot open URL 'https://cloud.r-project.org/src/contrib/PACKAGES' 

This might be due to a network issue or a misconfiguration of the repository URL.

To troubleshoot this issue, you can try the following steps:

1. Check your internet connection and make sure it is stable.
2. Verify that the repository URL is correct and that it is accessible from your location.
3. Try adding another repository URL to your R configuration. You can do this by adding the following line of code to your script before installing the package:

options(repos = c(CRAN = "https://cran.rstudio.com/"))

This will set the CRAN repository as the default repository for package installations. You can replace the URL with another CRAN mirror if you prefer.

4. If none of the above steps work, you can try installing the package manually by downloading the source files and installing them locally. You can find the source files for the RMySQL package on CRAN: https://cran.r-project.org/package=RMySQL. To install the package, download the source file and then run the following command, replacing path/to/file.tar.gz with the path to the downloaded file:

install.packages("path/to/file.tar.gz", repos = NULL, type = "source")

This will install the package from the local source file.