Re: Downgrade pgsql 17 to pgsql 12 question

Adrian Klaver <adrian.klaver@aklaver.com> writes:
> On 9/26/25 05:18, Ashish Mukherjee wrote:
>> I have a strange requirement to downgrade from pgsql 17 to pgsql 12. 
>> This is because we found in production certain incompatibilities between 
>> both versions for our database. It should have been caught in testing 
>> but was not.

> What are the incompatibilities?
> Might be easier to deal with those then doing the below.

Yeah ... sitting on a PG release that's already a year beyond EOL
is not a sustainable practice.  You should consult the last several
release notes for v13 and reflect on the likelihood that most of those
bugs also exist in v12.

            regards, tom lane