Correcting limitation re: updating distribution keys
</p>
<p>Using <codeph>UPDATE</codeph> in Greenplum Database has the following restrictions:</p>
<ul>
- <li id="ix155050">The Greenplum distribution key columns may not be updated.</li>
+ <li id="ix155050">While GPORCA supports updates to Greenplum distribution key columns, the
+ Postgres planner does not.</li>
<li id="ix142137">If mirrors are enabled, you cannot use <codeph>STABLE</codeph> or
<codeph>VOLATILE</codeph> functions in an <codeph>UPDATE</codeph> statement.</li>
<li id="ix155339">Greenplum Database partitioning columns cannot be updated.</li>
