add examples for ExecuteDelete and ExecuteUpdate functions.

EntityFrameworkCore.Console/Program.cs

@@ -13,6 +13,23 @@ using var context = new DeadBallZoneLeagueDbContext();
 // Rather than raise: "System.InvalidOperationException: Sequence contains no elements."
 // var firstCoach = await context.Coaches.FirstOrDefaultAsync();
 
+async Task ExecuteDelete(string name)
+{
+  // var coaches = await context.Coaches.Where(c => c.Name == name).ToListAsync();
+  // context.RemoveRange(coaches);
+  // await context.SaveChangesAsync();
+
+  // Simplified:
+  await context.Coaches.Where(c => c.Name == name).ExecuteDeleteAsync();
+}
+
+async Task ExecuteUpdate(int id)
+{
+  await context.Coaches
+  .Where(c => c.Id == id)
+  .ExecuteUpdateAsync(set => set.SetProperty(c => c.CreatedDate, DateTime.UtcNow));
+}
+
 async Task DeleteCoach(int id)
 {
   var coach = await context.Coaches.FindAsync(id);