Question

I want make query select all names from table ‘a’ where from table ‘b’ i have id_one=’3′. id_two is id record from table
‘a’, two records have relation from id_one=’3′. How i can make query ?

CREATE TABLE IF NOT EXISTS `a` (
  `id` int(11) NOT NULL,
  `name` varchar(11) NOT NULL,
  `value` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

--
-- Zrzut danych tabeli `a`
--

INSERT INTO `a` (`id`, `name`, `value`) VALUES
(1, 'lalala', 0),
(2, 'allalala', 0);






CREATE TABLE IF NOT EXISTS `b` (
  `id_one` int(11) NOT NULL,
  `id_two` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

--
-- Zrzut danych tabeli `b`
--

INSERT INTO `b` (`id_one`, `id_two`) VALUES
(3, 1),
(3, 2);

Answer 1

This is what you want:

select Name
from a inner join b on a.id = b.id_two
where b.id_one = 3