1
有2个数据库表,如下所示Table_1 & Table_2。 Table_1列索引与table_2的id值匹配。 Table_2的名称值将作为查询结果的列标题。将SQL表头值与另一个表列值匹配
Table_1
______________________________________________
| date |city_1 | city_2 | ... | city_100 |
|-----------|-------|-------------------------|
| 20.02.2013| 4 | 34 | ... | 222 |
| 21.02.2013| 3 | 10 | ... | 33 |
| ... | ... | ... | ... | ... |
|_____________________________________________|
Table_2
___________________
| id | name |
|-------|---------|
| 1 | newyork |
| 2 | london |
| ... | ... |
| 100 | istanbul|
|_________________|
预期结果低于
__________________________________________________________
| date | newyork | london | ... | istanbul |
|-----------|------------|------------|-------|-----------|
| 20.02.2013| 4 | 34 | ... | 222 |
| 21.02.2013| 3 | 10 | ... | 33 |
| ... | ... | ... | ... | ... |
|___________|____________|____________|_______|___________|
什么是SQL查询来获取引起上面?
感谢