Thank you for the quick reply, I changed the source code, and installed again. But I still can not have the additional column I added after restart, unless initializing the database. But I don’t want to initialize it in product environment which will drop all the data, it there any other method to do it, like some SQL query?
> On 24 Oct 2018, at 5:43 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> ZongtianHou <zongtianhou(at)icloud(dot)com> writes:
>> I know this is very dangerous, but I do in my private environment, is there a method to add a column in catalog table, like pg_authid?
>
> Not without patching the source code ...
>
> regards, tom lane