Process all Objects in Entity Framework without loading all data into memory at once

1. Use AsAsyncEnumerable() for Streaming

EF Core 3.0+ supports AsAsyncEnumerable(), which streams results incrementally (similar to a cursor):

using Microsoft.EntityFrameworkCore;
using System.Linq;

var dbContext = new YourDbContext(); // Replace with your DbContext

var query = dbContext.YourEntities.AsNoTracking().AsAsyncEnumerable();

await foreach (var entity in query)
{
    // Process one entity at a time
    DateTime utcTime = entity.Time.ToUniversalTime();
    long epochSeconds = (long)(utcTime - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds;
    // ...
}

2. Use Raw SQL with Streaming

For complex queries, execute raw SQL and stream results:

var sql = "SELECT * FROM your_table";
var query = dbContext.YourEntities
    .FromSqlRaw(sql)
    .AsAsyncEnumerable();

await foreach (var entity in query)
{
    // Process entity
}