On Thursday, December 7, 2017, Peter Eisentraut <
peter.eisentraut@2ndquadrant.com> wrote:
On 12/6/17 19:03, Joshua D. Drake wrote:
>
> How does that work? Is it using one of the hidden columns on a row?
It means that for example if an update record is produced, the entire
row is included in the record as the key.
IOW, IIUC, whether defined or not the user data portion of the table must, as a whole, provide a natural unique key if you are going to use logical replication. If two records only differ in their OID (or maybe ctid?) value you will have problem.
David J.