Locking field-paths for data consistency

[0xMochan]

Is your feature request related to a problem? Please describe.
When doing long queries, data gathered towards the end of the query is no longer consistent with the beginning.

Describe the solution you'd like
I'd like to ensure data consistency through some form of argument locking.

Describe alternatives you've considered
Not making long queries.

Additional context
“Lock” fieldpaths (i.e.: add "block": {"number": end_block} and "where {"_change_block": {"number_gte": start_block}}

• Basically, locking block ranges so that the data accrued is atomic even if new blocks are indexed come in

Implementation checklist

• Task 1