Use insert/update combination instead of select.

See bullet 2) for https://bugs.mysql.com/bug.php?id=45679.

Author: adampoit

tests/SideBySide/CancelTests.cs

@@ -231,13 +231,26 @@ public async Task CancelCommandWithTokenBeforeExecuteReader()
 		[Fact]
 		public async Task CancelCompletedCommand()
 		{
+			await m_database.Connection.ExecuteAsync(@"drop table if exists cancel_completed_command;
+create table cancel_completed_command (
+	id bigint unsigned,
+	value varchar(45)
+);").ConfigureAwait(false);
+
 			using (var cmd = m_database.Connection.CreateCommand())
 			{
-				cmd.CommandText = @"select 1;";
+				cmd.CommandText = @"insert into cancel_completed_command (id, value) values (1, null);";
 
 				using (await cmd.ExecuteReaderAsync().ConfigureAwait(false))
 					cmd.Cancel();
 			}
+
+			using (var cmd = m_database.Connection.CreateCommand())
+			{
+				cmd.CommandText = @"update cancel_completed_command SET value = ""value"" where id = 1;";
+
+				await cmd.ExecuteNonQueryAsync().ConfigureAwait(false);
+			}
 		}
 
 		[UnbufferedResultSetsFact]