Hey @MarGIS
For ApsaraDB RDS for SQL Server I do not believe that this is supported, mainly because I do not think the extensions are offered that would be able to connect them together.
For the ApsaraDB RDS for Postgres though, I think this could work, you more than likely would need to enable the postgis extension to add the spatial tables into it, if possible, you may want to try this out before deploying to an environment, as our organization uses a different database.
Cody
