Re:

On Mon, May 15, 2023 at 11:42 AM Fabrice Chapuis <fabrice636861(at)gmail(dot)com>
wrote:

> I am using postgres v.14 on rhel8
> I enabled the track_commit_timestamp parameter.
>
> postgres [379418]=# show track_commit_timestamp ;
> ┌────────────────────────┐
> │ track_commit_timestamp │
> ├────────────────────────┤
> │ on │
> └────────────────────────┘
> (1 row)
>
> I performed a recover with the_recovery_target_time parameter. In the
> postgres log the following informations are present:
>
> statement: alter system set recovery_target_time = '2023-05-15 16:10:00'
>
> recovery stopping before commit of transaction 53013547, time 2023-05-15
> 16:10:00.150823+02
>
> I would like to get the xid related timestamp with the following query:
>
> postgres[379418]=#select pg_xact_commit_timestamp(53013547);
> ERROR: function pg_xact_commit_timestamp(integer) does not exist
> LINE 1: select pg_xact_commit_timestamp(53013547);
> ^
> HINT: No function matches the given name and argument types. You might
> need to add explicit type casts.
>
> What is the xid type and how can I cast integer value to make
> pg_xact_commit_timestamp to work?
>
> Regards
>
> Fabrice Chapuis
>
>
>
This is not obvious, but QUOTE that value:
select pg_xact_commit_timestamp('53013547');

And it figures it out!