Timeseries of a single entity

Do you want to request a feature or report a bug?

Feature request of kinds, but just looking for some answers.

Subgraph has supported timetravel queries that allow you to retrieve entities at particular block. I am looking for a way to get historical state of a singleton entity over a given block range. Use case being imagine you wanted to get a timeseries of total supply of ERC20, or chainlink's latest answer stored in a singleton entity to query a timeseries of oracle answer. I imagine there can be 2 ways this can be done:

1. Direct raw queries over postgres
2. Write a custom resolver

Would be helpful if someone can answer how I can go about doing both of these things.

No se nombra ningún archivo ni ninguna prueba. Empieza siguiendo el punto de entrada existente de las consultas de timetravel y, después, compara los enfoques de PostgreSQL sin procesar y custom-resolver descritos en el issue; se consideraría terminado con una respuesta confirmada por un maintainer o una ruta de implementación documentada para el historial de un singleton a través de un rango de bloques.