mysql的连接表的特殊数据

Question

我有两个表

table_1      table_2 
id q_id content   id w_id  q_id c_id ranking 
----------------------  --------------------------------------- 
95 2046  1=E   123 22404 2046 100  0 
96 2046  2=G   124 22404 2046 101  1 
97 2046  3=N   125 22404 2046 102  1 
98 2046  4=B   126 22404 2046 103  1 
99 2046  5=V   127 22404 2046 104  2 
100 2046  A1    128 22404 2046 105  2 
101 2046  A2    129 22505 2046 A1  0 
102 2046  A3    130 22505 2046 A2  2 
103 2046  A4    131 22505 2046 A3  1 
104 2046  A5    132 22505 2046 A4  2 
105 2046  A6    133 22505 2046 A5  3 
106 2046  A7    134 22505 2046 A6  3 
107 2046  A8    135 22505 2046 A7  0 
108 2046  A9    136 22505 2046 A8  0 
109 2046  A10   137 22505 2046 A9  0 
---------------------   138 22505 2046 A10  0 

我需要加入该表为这种格式：

id q_id content w_id c_id ranking 
------------------------------------------------------- 
100 2046 A1   22404 100  0 
101 2046 A2   22404 101  1 
102 2046 A3   22404 102  1 
103 2046 A4   22404 103  1 
104 2046 A5   22404 104  2 
105 2046 A6   22404 105  2 
106 2046 A7   22505 A7  0 
107 2046 A8   22505 A8  0 
108 2046 A9   22505 A9  0 
109 2046 A10  22505 A10  0 

我的代码遵循

SELECT * 
FROM table_1 t1 
JOIN table_2 t2 ON t2.c_id in (t1.id, t1.content) 
WHERE t1.q_id = 2046 AND 
t2.q_id = 2046 AND 
t2.ranking >= 0 AND 
t2.w_id IN (22404, 22505) 
GROUP BY t1.id 

也许我的数据库中有一些冲突，所以结果并不是全部正确。A7-A10的行是错误的。

我的结果是：

id q_id content w_id c_id ranking 
------------------------------------------------------- 
100 2046 A1   22404 100  0 
101 2046 A2   22404 101  1 
102 2046 A3   22404 102  1 
103 2046 A4   22404 103  1 
104 2046 A5   22404 104  2 
105 2046 A6   22404 105  2 
106 2046 A7   22505 A1  1 
106 2046 A8   22505 A1  1 
106 2046 A9   22505 A1  1 
106 2046 A10  22505 A1  1 

谁能教我如何解决它，并给我建议？

Answer 1

如下尝试：

SELECT t1.id,t1.q_id,t1.content,t2.w_id,t2.c_id,t2.ranking 
FROM table_1 t1 
JOIN table_2 t2 ON t2.c_id = t1.id OR t2.c_id = t1.content 
WHERE t1.q_id = 2046 AND 
t2.q_id = 2046 AND 
t2.ranking >= 0 AND 
t2.w_id IN (22404, 22505) 
GROUP BY t1.id