Re: pageinspect: add tuple_data_record() - Mailing list pgsql-hackers

From Nikolay Shaplov
Subject Re: pageinspect: add tuple_data_record()
Date
Msg-id 3229636.uj9kZnTPMP@x200m
Whole thread Raw
In response to Re: pageinspect: add tuple_data_record()  (James Coleman <jtc331@gmail.com>)
List pgsql-hackers
В письме от 17 октября 2018 12:36:54 пользователь James Coleman написал:
> > I did compleatly got the question... The question is it safe to split
> > tuple
> > record into array of raw bytea? It is quite safe from my point of view.
> > We
> > use only data that is inside the tuple, and info from pg_catalog that
> > describes the tuple structure. So we are not affected if for example toast
> > table were cleaned by vacuum. If you try to deTOAST data when TOAST table
> > were
> > already overwritten by new data, you can get some trouble...

> The existing tuple_data_split() method already explicitly allows deTOASTing
> data,
> so if this is a problem, the problem already exists in pageinspect.

Oh. that's true... I do not remember writing it, but it seems I did it. After
Andreas notion, I am sure this should be fixed by removing de_toast option for
tuple_data_split... O_o


--
Do code for fun.
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