freeExec

var array = new KeyValuePair<int, string>[] { 
      new KeyValuePair<int, string>(123, "321"), 
      new KeyValuePair<int, string>(456, "789") 
};

Console.WriteLine(-2 & -3); // -4

Но |= , &= - что они делают?

SELECT id, (SELECT SUM(pen.time) FROM penalty WHERE id = penalty.id GROUP BY penalty.id LIMIT 1) AS sum_pen
FROM user