Redux Store or react state concept Vs Sql request

I am wondering what is the best design approach between using a big state (store) and sql request in database. Let's say you have a Todo CRUD application. You can save the Todos list in store within Redux implementation. What is the best approach if you want to make complex statistics on those TODOs: Reducers or sql requests?

For example, you want to get all todos for the current month:

1. Reducers/store approach
   You can get all the todos list from the store and filter todos by date to get all todos for the current month.
   • Pros:
     CRUD actions easy to manage, one state changes in the store (todos list)
     Low client/server traffics
   • Cons
     Business logic on client side
     client overhead for large data processing
2. Sql request approach:
   Complex request in database to get those todos and save the state 'currentMonthTodos' in the store. In this case you get your current month Todos list from currentMonthTodos state
   • Pros:
     Business logic on server side
     Reducing page load time for large datas
   • Cons
     Poor state management for CRUD actions
     High network traffic
     Size of the store grows up