Thread: Can I add a column in catalog table as a superuser

Hi, everyone
    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? 

ZongtianHou <zongtianhou@icloud.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

Thank you for the quick reply, I changed the source code, and installed again. But I still can not have the additional
columnI added after restart, unless initializing the database. But I don’t want to initialize it in product environment
whichwill 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@sss.pgh.pa.us> wrote:
>
> ZongtianHou <zongtianhou@icloud.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

On 24/10/2018 11:54, ZongtianHou wrote:
> Thank you for the quick reply, I changed the source code, and installed again. But I still can not have the
additionalcolumn I added after restart, unless initializing the database. But I don’t want to initialize it in product
environmentwhich will drop all the data, it there any other method to do it, like some SQL query?
 

no

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Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services