Question

我有这样的表：

+----+------+-----------+-------------------+
| ID | Name | sortorder | overridesortorder |
+----+------+-----------+-------------------+
| 1  | kkkk | 4         | null              |
+----+------+-----------+-------------------+
| 2  | yyyy | 3         | null              |
+----+------+-----------+-------------------+
| 3  | zzzz | 2         | 4                 |
+----+------+-----------+-------------------+
| 4  | gggg | 1         | 3                 |
+----+------+-----------+-------------------+

我需要显示如下所示的顺序，使用以上两个排序顺序列对表进行排序：

+----+-------+-----------+-------------------+
| ID | Name  | sortorder | overridesortorder |
+----+-------+-----------+-------------------+
| 1  | kkkk  | **4**     | null              |
+----+-------+-----------+-------------------+
| 3  | zzzz  | 2         | **4**             |
+----+-------+-----------+-------------------+
| 2  | yyyy  | **3**     | null              |
+----+-------+-----------+-------------------+
| 4  | gggg  | 1         | **3**             |
+----+-------+-----------+-------------------+

Answer 1

这是你想要的吗？

select t.*
from t
order by coalesce(overridessortorder, sortorder) desc;

Answer 2

获取两列的最大值，然后按

排序

SELECT ID, Name, sortorder, overridesortorder,
(SELECT Max(o) 
FROM (VALUES (sortorder), (overridesortorder)) AS value(o)) as order_value
FROM [TABLE] ORDER BY order_value

Answer 3

这就是你正在寻找的

select * 
from table
order by isnull(overridesortorder, sortorder) desc, overridesortorder

Answer 4

SELECT ID, Name, sortorder, overridesortorder 
FROM t
ORDER BY COALESCE(overridessortorder, sortorder) DESC, sortorder DESC;

这将组合两列，使用不为null的覆盖，然后对其为null的排序顺序，然后根据原始排序顺序列对结果进行排序以断开关系。如果你想根据覆盖打破关系，你只需要切换第二种。

Answer 5

我正在添加更多行

在这种情况下，如果sortorder和overridesortorder为null，我需要按名称显示顺序

ID Name sortorder OverriderSortOrder order_value 3 zzzz 2 4 4 1 kkkk 4 NULL 4 2 yyyy 3 NULL 3 4 gggg 1 3 3 5 hhhh NULL NULL NULL 6 bbbb NULL NULL NULL 7 jjjj NULL NULL NULL 8 cccc NULL NULL NULL

在具有2列的sql中排序顺序

5 个答案: