I have LINQ expression to take top 15 most frequently used answers
Here is expression
var latestAnswers = await _dbContext.TextAnswers.Include(x => x.CompanySurvey).ThenInclude(x => x.Survey)
.Where(x => x.CompanySurvey.Survey.FiscalYear == 2022)
.GroupBy(x => x.Answer)
.OrderByDescending(g => g.Count())
.Take(15)
.ToListAsync();
But I get this error
The LINQ expression ‘DbSet() .Include(x => x.CompanySurvey) .ThenInclude(x => x.Survey) .Where(x => x.CompanySurvey.Survey.FiscalYear == (int?)2022) .GroupBy(x => x.Answer) .OrderByDescending(g => g .AsQueryable() .Count()) .Take(__p_0)’ could not be translated. Either rewrite the query in a form that can be translated, or switch to client evaluation explicitly by inserting a call to ‘AsEnumerable’, ‘AsAsyncEnumerable’, ‘ToList’, or ‘ToListAsync’. See https://go.microsoft.com/fwlink/?linkid=2101038 for more information.
I can’t understood why it cant be translated.
How I can fix this?
2
Answers
I rewrite my code like this
And now everything great
EF Core 6 has to support such queries, but looks like full implementation support is moved to EF Core 7
After conversation looks like it is not needed to get grouped records from database, but just grouping key and Count