Question 1

Is Supabase treated differently from PostgreSQL?

Accepted Answer

Barely, and that is deliberate. Supabase runs on the same PostgreSQL implementation rather than a separate writer, so write modes, identity matching, batching and schema creation all behave as they do for any Postgres destination. What differs is connection handling: SSL and the default postgres database, and simple protocol when connecting on the transaction pooler port. Those are defaults rather than things you configure.

Question 2

Can I use the pooled connection string?

Accepted Answer

For writing, yes. The transaction pooler port is handled with simple protocol so ordinary write syncs work through it. The restriction to be aware of applies to logical replication rather than writes: pooled connections cannot serve the long lived replication protocol, so if you later want change data capture reading out of Supabase, that needs the direct connection instead. For pushing data from a data warehouse into Supabase, the pooler is fine.

Question 3

What do teams actually push into Supabase?

Accepted Answer

Typically derived values the application needs but cannot compute cheaply: account health scores, usage aggregates, recommendation sets, plan entitlements, or a leaderboard. Those are expensive to calculate against production data and natural to model in a data warehouse. Writing the result back means the app reads a simple table through the client library it already uses, and row level security applies as it would to any other table.

Question 4

What write modes are available?

Accepted Answer

Create, update, update or create, and replace. Create, update and update or create all need an identity field mapped so rows can be matched, and the destination column does not need a declared key though it should be unique. Replace is worth understanding before use: it replaces every row in the target table rather than removing only the rows absent from your query, so reserve it for tables the sync owns entirely.

Connect Snowflake with Supabase

Connect Snowflake and Supabase with Polytomic

Postgres write behaviour

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Pooler aware connection

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Connect Supabase in Polytomic

Create a sync between Snowflake and Supabase

Map fields and enable the sync

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