php - Mysql 查询查找多个表的多个列中共有的记录。

Question

表1

- | a  | b  | C  | d  | e  |
- |----+----+----+----+----|
- | 1  | 2  | 3  | 2  | 9  |
- | 2  | 3  | 2  | 3  | 5  |
- | 3  | 8  | 4  | 4  | 2  |  
- | 4  | 9  | 8  | 5  | 3  | 
- | 5  | 1  | 9  | 7  | 1  |   
- | 6  | 12 | 10 | 9  | 10 |

表2

- | a2 | b2 | C2 | d2 | e2 |
- |----+----+----+----+----|
- | 1  | 2  | 3  | 2  | 9  |
- | 2  | 3  | 2  | 3  | 5  |
- | 3  | 8  | 4  | 4  | 2  |  
- | 4  | 9  | 8  | 5  | 3  | 
- | 5  | 1  | 9  | 7  | 1  |   
- | 6  | 12 | 10 | 9  | 10 |

我想要的结果:

2,3

因为 2 和 3 在这两个表的所有列中都很常见。

我已经尝试过:

SELECT DISTINCT c1.a FROM  `table1` c1 
JOIN  `table1` c2 ON ( c1.a = c2.b )  
JOIN  `table1` c3 ON ( c2.b = c3.c )  
JOIN  `table1` c4 ON ( c3.c = c4.d )  
JOIN  `table1` c5 ON ( c4.d = c5.e )
LIMIT 0 , 10

它适用于 table1，但如何连接更多表。

Answer 1

完全一样:

SELECT DISTINCT c1.a FROM  `t1` c1 
JOIN  `t1` c2 ON ( c1.a = c2.b )  
JOIN  `t1` c3 ON ( c2.b = c3.c )  
JOIN  `t1` c4 ON ( c3.c = c4.d )  

JOIN  `t2` c5 ON ( c4.d = c5.a )  
JOIN  `t2` c6 ON ( c5.b = c6.c )  
JOIN  `t2` c7 ON ( c6.c = c7.d )  
LIMIT 0 , 10

检查这个 fiddle :http://sqlfiddle.com/#!2/46ade/6