Mysql的查詢的兩個表參照表連接

Question

您好，我有兩個表是這樣的：

表1：

name | distro1 | distro2 | distro3 
---------------------------------- 
foo | 001  | 002  | 003 

表2：

id | distro 
--------------- 
001 | slackware 
002 | redhat 
003 | debian 

我想獲得選擇的結果是這樣=

name | dis1  | dis2 | dis3 
---------------------------------- 
foo | slackware | redhat | debian 

查詢需要crea那些源表格。

CREATE TABLE IF NOT EXISTS `table1` (
    `name` varchar(30) NOT NULL, 
    `distro1` varchar(30) NOT NULL, 
    `distro2` varchar(30) NOT NULL, 
    `distro3` varchar(30) NOT NULL 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

INSERT INTO `table1` (`name`, `distro1`, `distro2`, `distro3`) VALUES 
('foo', '001', '002', '003'); 

CREATE TABLE IF NOT EXISTS `table2` (
    `id` varchar(30) NOT NULL, 
    `distro` varchar(30) NOT NULL 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

INSERT INTO `table2` (`id`, `distro`) VALUES 
('001', 'slackware'), 
('002', 'readhat'), 
('003', 'debian'); 

Answer 1

，你可以有這樣的事情：用INNeR JOIN

，假定所有的發行有價值觀，並且對相應的匹配table 2

SELECT a.Name, 
     b.distro Distro1, 
     c.distro Distro2, 
     d.distro Distro3 
FROM myTableA a 
      INNER JOIN myTableB b 
       on a.distro1 = b.id 
      INNER JOIN myTableB c 
       on a.distro2 = c.id 
      INNER JOIN myTableB d 
       on a.distro3 = d.id 

更新1

SELECT a.Name, 
     b.distro Distro1, 
     c.distro Distro2, 
     d.distro Distro3 
FROM myTableA a 
      LEFT JOIN myTableB b 
       on a.distro1 = b.id 
      LEFT JOIN myTableB c 
       on a.distro2 = c.id 
      LEFT JOIN myTableB d 
       on a.distro3 = d.id