Oracle查询按类型分组

Question

我有一个查询的输出：

Item   Type   Qty
 1       A     2
 2       A     3
 3       B     1
 4       B     2
 5       C     1
 6       D     3

需要分组的类型：A、B

我需要输出结果像这样：（汇总数量并按分组后）

Type      Qty
  A        5
  B        3
OTHERS     4

当类型未定义时，它将分组为“其他”。使用分析函数是否可能实现这一点，还是我需要创建自己的函数？

- ycf

Answer 1

假设您的表/视图名称为x，这将准确地提供所需的输出：

SELECT CASE WHEN type IN ('A', 'B') THEN type ELSE 'OTHERS' END AS type,
       SUM(qty) AS qty
  FROM x
GROUP BY CASE WHEN type IN ('A', 'B') THEN type ELSE 'OTHERS' END
ORDER BY 1

- Rachcha

Answer 2

  select type,sum(qty) from (select decode(type,c,'OTHERS',d,'OTHERS') type,qty from your_table) group by type;

                       (or)

  select type,sum(qty) from (select (case when type in ('A','B') then type else 'others' end) type,qty from your_table) group by type;

- Sai