LINQ Query Filtering on Multiple Conditions Leading to Unexpected Results with EF Core 6
I'm integrating two systems and Can someone help me understand I'm refactoring my project and I'm experimenting with I'm working with Entity Framework Core 6 and trying to filter a list of orders based on multiple conditions using LINQ... However, I'm working with unexpected results where some orders that should be returned are missing from the final result set. The query is supposed to filter orders by both status and a date range, but it seems like the conditions are not being applied correctly. Here’s the LINQ query I’m using: ```csharp var startDate = new DateTime(2023, 1, 1); var endDate = new DateTime(2023, 12, 31); var statusFilter = "Shipped"; var filteredOrders = await _context.Orders .Where(o => o.Status == statusFilter && o.OrderDate >= startDate && o.OrderDate <= endDate) .ToListAsync(); ``` I checked the database and confirmed that there are indeed orders with the "Shipped" status that fall within the specified date range. However, when I run this code, some of these orders do not appear in the `filteredOrders` list. To troubleshoot, I tried breaking down the query into separate conditions and executing them one by one: ```csharp var statusOrders = await _context.Orders .Where(o => o.Status == statusFilter) .ToListAsync(); var dateRangeOrders = await _context.Orders .Where(o => o.OrderDate >= startDate && o.OrderDate <= endDate) .ToListAsync(); ``` Both queries return the expected results when run alone, but combining them as in my original query results in many orders being excluded. I also verified that there is no scenario with the `OrderDate` format. I suspect it might be related to how EF Core is translating the LINQ query into SQL, or perhaps an scenario with data types, but I can’t pinpoint the question. Is there a known scenario with EF Core 6 filtering that could cause this behavior, or what best practices should I follow to ensure all relevant records are included in the result set? Any help would be appreciated! I'm working on a API that needs to handle this. I'm working on a application that needs to handle this. I'm coming from a different tech stack and learning Csharp. Is this even possible? My development environment is Windows 11. I'd be grateful for any help.