PL SQL Pivot：使用不同的聚合

Question

我想按以下方式调整每个国家/地区的总和（销售额）。但是价格列应该是每家商店的平均值。所以，我很想得到这样的结果：

期望的结果：

shop	avg_price	US	CN
2	6	100	10
3	5	60	10

当前结果：

shop	price	US	CN
2	5	null	5
2	7	100	5
3	5	60	10

我可以在枢轴部分跳过价格，稍后再重新加入。但是，我相信有一个更聪明的选择。你能帮帮我吗？

查询（到目前为止）

SELECT *
  FROM (
         SELECT 'US' AS country, 2 AS shop, 50 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'CN' AS country, 2 AS shop, 5 AS sales, 7 AS price
           FROM dual
          UNION ALL
         SELECT 'US' AS country, 3 AS shop, 50 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'CN' AS country, 3 AS shop, 5 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'US' AS country, 2 AS shop, 50 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'CN' AS country, 2 AS shop, 5 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'US' AS country, 3 AS shop, 10 AS sales, 5 AS price
           FROM dual
          UNION ALL
         SELECT 'CN' AS country, 3 AS shop, 5 AS sales, 5 AS price
           FROM dual
       )
 PIVOT ( SUM(sales) FOR country IN ( 'US','CN' )
    );

Answer 1

您需要按shop 分组，同时为每个透视列添加双引号别名，例如

SELECT shop, AVG(price) AS avg_price, SUM("US") AS us, SUM("CN") AS cn
  FROM t
 PIVOT ( SUM(sales) for country in ( 'US' AS "US",'CN' AS "CN" ) )
 GROUP BY shop

Demo