Bug report

• I confirm this is a bug with Supabase, not with my own application.

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Describe the bug

Supabase supports selecting computed fields from RPC results via postgrest but the type system shows an error when attempting to do so.

Errors show up as SelectQueryError<"column ... does not exist on ..."> but the query still works as expected.

To Reproduce

Minimal reproduction is available in the gwax/rpc-compted-fields branch here: https://github.com/manapoolinc/supabase-playground/tree/gwax/rpc-computed-fields

1. Make a table returning rpc: https://github.com/manapoolinc/supabase-playground/blob/gwax/rpc-computed-fields/supabase/migrations/20250127194033_create_country_fns.sql#L1
2. Make a computed field on the returned table type: https://github.com/manapoolinc/supabase-playground/blob/gwax/rpc-computed-fields/supabase/migrations/20250127194033_create_country_fns.sql#L11
3. Query the rpc with a select containing the computed field: https://github.com/manapoolinc/supabase-playground/blob/gwax/rpc-computed-fields/src/lib/db/countries.ts#L37
4. See type error in IDE and typescript compiler: https://github.com/manapoolinc/supabase-playground/blob/gwax/rpc-computed-fields/src/lib/db/countries.ts#L61

Expected behavior

No Type Errors in reproduction code

System information

• Version of supabase: 2.6.8
• Version of supabase-js: 2.48.1