How to: RDS MySQL and MariaDB Gotchas and Limitations
-	🔸**No SUPER privileges.** RDS provides some [stored procedures](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.MySQL.SQLRef.html) to perform some tasks that require SUPER privileges such as starting or stopping replication.
-	🔸You can replicate to non-RDS instances of MySQL, but [replication to these instances will break during AZ failovers](https://www.percona.com/live/mysql-conference-2014/sessions/rds-mysql-tips-patterns-and-common-pitfalls).
-	🔸There is no ability to manually CHANGE MASTER on replicas, so they must all be rebuilt after a failover of the master.
-	🔸Most global options are exposed only via [DB parameter groups](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithParamGroups.html). Some variables that were introduced in later MySQL dot releases such as [avoid_temporal_upgrade](https://dev.mysql.com/doc/refman/5.6/en/server-system-variables.html#sysvar_avoid_temporal_upgrade) in MySQL 5.6.24 are not made available in RDS's 5.6.x parameter group and making use of them requires an upgrade to MySQL 5.7.x.
-	🔸RDS features such as Point-In-Time restore and snapshot restore are not supported on MyISAM tables. Ensure you lock and flush each MyISAM table before executing a snapshot or backup operation to ensure consistency.

RDS PostgreSQL
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