How to check the final SQL query generated by Entity Framework based on the LINQ expression for MySQL database

 If you want to check the final SQL query generated by  Entity Framework based on the LINQ expression for MySQL database  . you can follow the following steps : 

1. Connect to your MySQL command line 

2. run the following command :  SET GLOBAL general_log = 'ON';

3. In next command you need to setup the log file location. Here is the command for that SET GLOBAL general_log_file = 'C://file.log';

4. Execute the method for which you want to check the SQL query. 

5. Once you are done SET GLOBAL general_log = 'OFF'; run this. 

You can now check in your log file the output sql query from Entity Framework . 

linq query to get maximum salary in employee list object

 Here is an example of how you could use LINQ (Language Integrated Query) to get the maximum salary in a list of employee objects in C#:

  using System.Linq;

// Assume that the list of employees is stored in a variable called "employees"

// Get the maximum salary from the list of employees

decimal maxSalary = employees.Max(e => e.Salary);

// You can also use the following syntax to achieve the same result:

// decimal maxSalary = (from e in employees select e.Salary).Max();

In this example, the Max method is used to get the maximum salary from the list of employees. The method takes a lambda expression that specifies the property to use for the comparison (in this case, the Salary property).

Alternatively, you can use a LINQ query to achieve the same result. The query uses the from and select clauses to specify the source collection and the property to select, and the Max method is used to get the maximum value.

Note that this code assumes that the employees list and the Employee class have already been defined and that the Employee class has a Salary property of type decimal. You will need to modify the code to match the structure of your own data.

linq error At least one object must implement IComparable

 Well, you're trying to use SortedSet<>... which means you care about the ordering. But by the sounds of it your Player type doesn't implement IComparable<Player>. So what sort order would you expect to see?

Basically, you need to tell your Player code how to compare one player with another. Alternatively, you could implement IComparer<Player> somewhere else, and pass that comparison into the constructor of SortedSet<> to indicate what order you want the players in. For example, you could have:

public class PlayerNameComparer : IComparer<Player>
{
    public int Compare(Player x, Player y)
    {
        // TODO: Handle x or y being null, or them not having names
        return x.Name.CompareTo(y.Name);
    }
}

Then:

// Note name change to follow conventions, and also to remove the
// implication that it's a list when it's actually a set...
SortedSet<Player> players = new SortedSet<Player>(new PlayerNameComparer());

linq orderby collection property

 IQueryable<Parent> data = context.Parents.OrderBy(p=>p.Children.OrderBy(chi => chi.Name).FirstOrDefault());