view the previous version of tables - Mailing list pgsql-admin

From Ankush Chawla
Subject view the previous version of tables
Date
Msg-id CAOY8JhDzDM=Y1WK02EspDoG+xfJOvQRpVBdT6AgzYQo2jSyJ7Q@mail.gmail.com
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Responses Re: view the previous version of tables  (Ashutosh Sharma <ashu.coek88@gmail.com>)
List pgsql-admin

What is the command to view the previous version of rows (deleted or updated)

I searched and found some functions like : . But none of them are working
 SELECT * FROM page_header(get_raw_page('school',0));
SELECT * FROM heap_page_items(get_raw_page('school',0));
                                  ^
Sorry for a basic question
--
Best Regards,
Ankush Chawla

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