Function
query-batch
Perform a batch query (which could contain multiple statements) against a Postgres database, leaving connection/session management to the callee/implementer of this interface (normally a provider configured with connection credentials).
No user-provided or untrusted data should be used with this query -- parameters are not allowed.
This query can be used to execute multi-statement queries (common in migrations).
query-batch: async func(query: string) -> result<_, error>;