We are about to migrate our existing system from local MySQL instances on the same EC2 to a proper remote Amazon-RDS.

Unfortunately there is a functionality called Median that MySQL is missing. Our existing code base is utilising MySQL Infusion UDF to achieve calculating Medians.

  1. Now we are in a dilemma, is it possible to install these extensions on RDS? I believe RDS is not really like a EC2 where you can just SSH in and install something.

  2. Alternatively is there a way to do this median on MySQL without using extensions?


No, this is not possible. If you require this extension, you will need to run your own MySQL instances.

  • I was also looking to see if it is possible to use UDFs in an RDS instance. Unfortunately, it isn't so I ended up using MySQL on my EC2 instance, where I have full control and can upload binary shared objects to MySQL. – kimbaudi Sep 18 '16 at 16:26

Please have a look at these links:



  • 1
    Posting just links is not an answer. – David Makogon Jun 25 '16 at 10:58

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