Question

我有一张看起来像这样的表：

 | id | name | price | number |
 ---------------------------
 | 4  | fr-1 | 1,00  |  9984  |
 | 5  | fr-2 | 5,20  |  5421  |
 | 6  | fr-3 | 3,40  |  7845  |
 | 7  | de-1 | 6,20  |  9494  |
 | 8  | de-3 | 3,80  |  1254  |
 | 9  | de-6 | 3,90  |  3197  |

我想对这些进行排序:(显然这是错误的，但希望显示出我想要实现的目标）

 ORDER BY CASE
 WHEN name LIKE 'fr-%' THEN name
 WHEN name LIKE 'de-%' THEN price
 END ASC;

我希望这个结果：

 FRENCH PRODUCT
 name: fr-1  |  price: 1,00
 name: fr-2  |  price: 5,20
 name: fr-3  |  price: 3,40

 GERMAN PRODUCT
 name: de-3  |  price: 3,80
 name: de-6  |  price: 3,90
 name: de-1  |  price: 6,20

Answer 1

你想要这样的东西：

ORDER BY CASE
            WHEN name LIKE 'fr-%' THEN 0
            WHEN name LIKE 'de-%' THEN 1
         END ASC,
         CASE
            WHEN name LIKE 'fr-%' THEN name
            WHEN name LIKE 'de-%' THEN price
         END ASC;

'fr-%'首先会出现类似记录，然后是'de-%'条记录。然后，第一组将按name排序，而第二组将按price排序。

Demo here

使用通配符按案例排序

1 个答案: