preferredEngineVersions

Ordered list of preferred RDS DB instance engine versions. When engine_latest_version is not set, the data source will return the first match in this list that matches any other criteria. If the data source finds no preferred matches or multiple matches without engine_latest_version, it returns an error. CAUTION: We don't recommend using preferred_engine_versions without preferred_instance_classes since the data source returns an arbitrary instance_class based on the first one AWS returns that matches the engine version and any other criteria.

Ordered list of preferred RDS DB instance engine versions. When engine_latest_version is not set, the data source will return the first match in this list that matches any other criteria. If the data source finds no preferred matches or multiple matches without engine_latest_version, it returns an error. CAUTION: We don't recommend using preferred_engine_versions without preferred_instance_classes since the data source returns an arbitrary instance_class based on the first one AWS returns that matches the engine version and any other criteria.