Fix Cockroach Native Query problem

[i-am-tom]

What

Native query tracking fails for CockroachDB because OIDs are 64-bit (despite what the documentation says). However, if we just change the type to i64, then the vanilla Postgres native query setup fails because sqlx requires each type in Rust to correspond to a specific Postgres type, and thus we can't do some sort of dynamic switching.

How

We cast absolutely everything to i64 explicitly in the query. The fact that this works seems to be accidental: because the input type becomes irrelevant, Cockroach determines a different type for oid than Postgres, and both are happy. sqlx bases its types on information from the database, so it's also happy.

I have tested this with tracking a native query in both Cockroach and Postgres, and both seem to be happy.

[danieljharvey]

This makes sense, so long as the types are the same by the time they reach sqlx, everybody is happy.