| Lists: | pgsql-bugs |
|---|
| From: | 刘剑 <liujian(at)raintai(dot)com> |
|---|---|
| To: | pgsql-bugs <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | help:how to rollback postgresql to several minutes ago |
| Date: | 2016-04-14 10:06:07 |
| Message-ID: | tencent_2C58D0DB56887C4823E090B2@qq.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | pgsql-bugs |
hello
please help,
I had written an update sql without where condition to my table, then updated whole table.
So how can i rollback this?
thank you very much.
| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | 刘剑 <liujian(at)raintai(dot)com> |
| Cc: | pgsql-bugs <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | Re: help:how to rollback postgresql to several minutes ago |
| Date: | 2016-04-14 12:23:31 |
| Message-ID: | CAB7nPqSE0qU3NLeoVB8OdmEpndgFdMYLysr5jQ=JDT1Js9S=0w@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | Postg토토SQL : Postg토토SQL 메일 링리스트 : 2016-04-14 이후 PGSQL-BUGS 12:23 |
On Thu, Apr 14, 2016 at 7:06 PM, 刘剑 <liujian(at)raintai(dot)com> wrote:
> I had written an update sql without where condition to my table, then
> updated whole table.
> So how can i rollback this?
You need to roll in a backup I am afraid, and you should always have
some. Postgres has no way to replay back directly WAL records, it can
only forward replay. In such circumstances standby nodes with a delay
when applying WAL are useful.
--
Michael
| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | 刘剑 <liujian(at)raintai(dot)com> |
| Cc: | pgsql-bugs <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | Re: help:how to rollback postgresql to several minutes ago |
| Date: | 2016-04-14 12:24:22 |
| Message-ID: | CAB7nPqRq6FfdQOte72xcsypc9wAtgzHHEpVKU+kocGsCf2WKBA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | pgsql-bugs |
On Thu, Apr 14, 2016 at 9:23 PM, Michael Paquier
<michael(dot)paquier(at)gmail(dot)com> wrote:
> On Thu, Apr 14, 2016 at 7:06 PM, 刘剑 <liujian(at)raintai(dot)com> wrote:
>> I had written an update sql without where condition to my table, then
>> updated whole table.
>> So how can i rollback this?
>
> You need to roll in a backup I am afraid, and you should always have
> some. Postgres has no way to replay back directly WAL records, it can
> only forward replay. In such circumstances standby nodes with a delay
> when applying WAL are useful.
By the way, this is not a bug. Such basic questions had better be
asked on pgsql-novice.
--
Michael