Функции агрегирования при применении к нескольким столбцам дают неверный результат

Question

Я использую ef core 2.2 и LINQ. Я пытаюсь объединить несколько столбцов в одном запросе. SQL-запрос, сгенерированный LINQ, неверен и дает неверные результаты.

 public async Task<SecondaryInvoiceLProformaTotals> test(int secondaryInvoiceId)
        {
            var query = (_context.SecondaryInvoiceLineItems
                    .Where(i => i.SecondaryInvoiceId == secondaryInvoiceId)
                    .GroupBy(l => new {l.SecondaryInvoiceId})
                    .Select(g => new SecondaryInvoiceLProformaTotals
                    {                
                        SecondaryInvoiceId = g.Key.SecondaryInvoiceId,        
                        SumInvoiceQty = g.Sum(o => o.InvoiceQty),
                        SumMRPAmount = g.Sum(o => o.TotalMRPAmount),
                        SumSecondaryDiscountAmount = g.Sum(o => o.TotalSecondaryDiscountAmount),
                        SumSecondaryPrice = g.Sum(o => o.TotalSecondaryPrice),
                        SumIGSTAmount = g.Sum(o => o.TotalIGSTAmount),
                        SumCGSTAmount = g.Sum(o => o.TotalCGSTAmount),
                        SumSGSTAmount = g.Sum(o => o.TotalSGSTAmount),
                        SumAmount = g.Sum(o => o.TotalAmount),
                        SumBasePoints = g.Sum(o => o.TotalBasePoints)
                    })
                    );
            SecondaryInvoiceLProformaTotals ret = await query.FirstOrDefaultAsync();            
            return ret;
        }

SQL-запрос, сгенерированный LINQ:

SELECT SUM("i"."InvoiceQty") AS "SumInvoiceQty", 
"i"."TotalMRPAmount" AS "SumMRPAmount", 
"i"."TotalSecondaryDiscountAmount" AS "SumSecondaryDiscountAmount", 
"i"."TotalSecondaryPrice" AS "SumSecondaryPrice", 
"i"."TotalIGSTAmount" AS "SumIGSTAmount", 
"i"."TotalCGSTAmount" AS "SumCGSTAmount", 
"i"."TotalSGSTAmount" AS "SumSGSTAmount", 
"i"."TotalAmount" AS "SumAmount", 
SUM("i"."TotalBasePoints") AS "SumBasePoints"
      FROM "SecondaryInvoiceLineItems" AS "i"
      WHERE "i"."SecondaryInvoiceId" = 5
      GROUP BY "i"."SecondaryInvoiceId"
      LIMIT 1

Ожидаемый запрос SQL:

SELECT SUM("i"."InvoiceQty") AS "SumInvoiceQty",
SUM("i"."TotalMRPAmount") AS "SumMRPAmount", SUM("i"."TotalSecondaryDiscountAmount") AS "SumSecondaryDiscountAmount", 
SUM("i"."TotalSecondaryPrice") AS "SumSecondaryPrice", 
SUM("i"."TotalIGSTAmount") AS "SumIGSTAmount", 
SUM("i"."TotalCGSTAmount") AS "SumCGSTAmount", 
SUM("i"."TotalSGSTAmount") AS "SumSGSTAmount", 
SUM("i"."TotalAmount") AS "SumAmount", 
SUM("i"."TotalBasePoints") AS "SumBasePoints"
      FROM "SecondaryInvoiceLineItems" AS "i"
      WHERE "i"."SecondaryInvoiceId" = 5
      GROUP BY "i"."SecondaryInvoiceId"
      LIMIT 1