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Add Postgres publication guidance #278

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Oct 27, 2025
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Add Postgres publication guidance #278

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15 changes: 11 additions & 4 deletions snippets/postgres-powersync-publication.mdx
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@@ -1,6 +1,13 @@

```sql
-- Create a publication to replicate tables.
-- Specify a subset of tables to replicate if required.
-- The publication must be named "powersync"
-- Create a publication to replicate tables. The publication must be named "powersync"
CREATE PUBLICATION powersync FOR ALL TABLES;
```
```

<Warning>
Note that the PowerSync Service has to read all updates present in the publication's WAL, regardless of whether the table is referenced in your Sync Streams / Sync Rules definitions. This can cause large spikes in memory usage or introduce replication delays, so if you're dealing with large data volumes then you'll want to specify a comma separated subset of tables to replicate instead of `FOR ALL TABLES`.
</Warning>

<Warning>
The snippet above replicates all tables and is the simplest way to get started in a dev environment.
</Warning>