vnořený dotaz

$query4 = "SELECT *
							FROM custom_field_string_table
							WHERE bug_id = '".$regs[1]."'
							AND bug_id NOT IN ( SELECT bug_id
														FROM custom_field_string_table 
														WHERE field_id = 8
														AND value = 'ANO'
													)
							GROUP BY bug_id";
			$result4 = db_query ($query4);
			while ($row4 = db_fetch_array ($result4)) {
				
				$query2 = "INSERT INTO custom_field_string_table 
							VALUES (8, '".$row4['bug_id']."', 'ANO')";
				$result2 = db_query ($query2);
			}

$query4 = "SELECT *
							FROM custom_field_string_table
							WHERE bug_id = '".$regs[1]."'
							GROUP BY bug_id";
							
			$result4 = db_query ($query4);
			while ($row4 = db_fetch_array ($result4)) {
				
				$query2 = "INSERT INTO custom_field_string_table 
							VALUES (8, '".$row4['bug_id']."', 'ANO')";
				$result2 = db_query ($query2);
			}