Link to home
Start Free TrialLog in
Avatar of Jerry Seinfield
Jerry SeinfieldFlag for United States of America

asked on

SQL 2019 downgrade

Hello SQL Experts,

Can I purchase SQL 2019 and downgrade to 2016? 

The reason for that is because we do have an application that is supported only by the 2016 version.

If so, is there a downtime when tables are indexed during maintenance?

How much would assurance cost?

Avatar of Éric Moreau
Éric Moreau
Flag of Canada image

have you tried setting the compatibility level to 2016. In most cases, it is working as good.
Previously it's been my experience that if you license the current version of SQL, you can install an earlier version instead if you prefer.  But check with whomever you're licensing the SQL from to be sure.  Check with them too on assurance cost.  

The other q, "is there a downtime when tables are indexed during maintenance", is a totally different subject.  Generally yes, but it could depend on the specific edition of SQL you licensed (Enterprise has many more tools for avoiding down time while doing maintenance.)

Avatar of ste5an
Flag of Germany image

Link to home
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial

note also that you can have several versions of SQL used by different instances of SQL:

So the Admin interface can be SQL 2019, and one of the instance running with SQL 2016.