Entity framework Core Raw SQLQueries with custom model

Question

Using Entity Framework 6, I was able to use execute a Raw SQL Query and use a custom model which was not defined in the DBContext in order to store the output of the query. A si

Answer 1

follow these steps:

Create your model

Probably it could be better if you can reduce it to a model as generic as possible but it's not a must:

public class MyCustomModel
{
   public string Text { get; set; }
   public int Count { get; set; }
}

Add it to your own DbContext

Create DbSet for your custom model

public virtual DbSet MyCustomModelName { get; set; }

Keep in mind to specify your custom model has no key

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    base.OnModelCreating(modelBuilder);
    ...

    modelBuilder.Entity().HasNoKey();
}

Use it from your dbContext instance

async public Task> GetMyCustomData()
{
    var rv = new List();
    using (var dataContext = new DbContext())
    {
        var sql = @"
            select textField as 'Text', count(1) as 'Count'
            from MyTable";
        rv = await dataContext.Set().FromSqlRaw(sql).ToListAsync();
    }
    return rv;
}