Allow CREATE SUBSCRIPTION command without needing superuser privilege

[burggraf]

Edit: this requires PostgreSQL v17, its deployment is in progress.

Supabase currently supports:
CREATE PUBLICATION my_publication FOR ALL TABLES;

but does not support:
CREATE SUBSCRIPTION my_subscription CONNECTION '<connection_string>' PUBLICATION my_publication;

The error given is:
ERROR: 42501: must be superuser to create subscriptions

In order to be able to use logical replication to replicate individual tables (or all tables in a schema) between Supabase projects, CREATE SUBSCRIPTION should be executable by the postgres user without supseruser privileges, in parity with the CREATE PUBLICATION command.

[ianwoodfill]

Any update here? This guide is clearly outdated if this is no longer supported: https://supabase.com/docs/guides/database/postgres/setup-replication-external

[alexandredev3]

Any updates on this issue? I'm having the same problem

[frankyw]

Seems like subscriptions are no longer supported, period.

https://supabase.com/docs/guides/database/postgres/roles-superuser

[rustamd]

Looking for this as well, hopefully can get implemented soon.

[steve-chavez]

This will come for free once pg 17 is supported.

[t0mdicks0n]

I followed the same guide on how to setup replication on Supabase but superuser is needed so the guide is obsolete? At least remove that page on the docs almost 1 year after users in this thread notified you about it?

https://supabase.com/docs/guides/database/postgres/setup-replication-external

[encima]

Hey folks,

The guide there is for replicating to an external system so the subscription is created on the target database. Creating publications etc are supported without superuser permissions

[Lanznx]

any update?

[encima]

Yep, this is possible for the `postgres` user as of 17.4 and is rolling out across regions currently

…

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