SingleStore connector.

Please see the website for SingleSore:
https://www.singlestore.com/

Test execution:

To execute unit tests you need to set up the environment variable 'SINGLESTORE_LICENSE' with SingleStore license value.
To get a free-tier license you need to create a free SingleStore account.
More details:
https://www.singlestore.com/blog/announcing-memsql-free-tier/