docs: Support of MySQL client versions by Cube Store

Author: paveltiunov

docs/content/Caching/Using-Pre-Aggregations.mdx

@@ -212,6 +212,14 @@ client, for example:
 mysql -h <CUBESTORE_IP> --user=cubestore -pcubestore
 ```
 
+<WarningBox>
+
+Only Linux and Mac OS versions of MySQL client are supported as of right now.
+You can install one on ubuntu using `apt-get install default-mysql-client` command or `brew install mysql-client` on Mac OS.
+Windows versions of the MySQL client aren't supported.
+
+</WarningBox>
+
 To check which pre-aggregations are managed by Cube Store, you could run the
 following query: