@Marcin Żyszkiewicz - Thanks for the question and using MS Q&A platform.
According to the offical documentation, Azure Database for PostgreSQL in Microsoft Purview and Azure Database for MySQL in Microsoft Purview.
Microsoft Purview only supports single server deployment option for Azure Database for PostgreSQL and Azure Database for MySQL.
If you have: Azure Database for MySQL flexible server
is not supported in Microsoft Purview
If you have: Azure Database for MySQL single server
is supported in Microsoft Purview
Note: Microsoft Purview only supports single server deployment option for Azure Database for MySQL and I'm able to see in Microsoft Purview Portal as shown below:
Hope this helps. Do let us know if you any further queries.
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