Re: [HACKERS] pg_upgrade failed with error - ERROR: column "a" inchild table must be marked NOT NULL

On Wed, Jul 26, 2017 at 4:02 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Not sure what's involved there code-wise, though, nor whether we'd want
> to back-patch.

I'll try to look at the code around that to come up with a clear
conclusion in the next couple of days, likely more as that's a
vacation period. Surely anything invasive would not be backpatched.
-- 
Michael