Question

我的英语不是很好，但我试着解释清楚。我需要建议。我从一个表中选择每个字段的值的总和。我的查询如下：

SELECT * FROM
(
 SELECT SUM(Clicks) AS  sales , 'sales' as type
 FROM ClicksPerDay
 WHERE BannerID = 3456

 UNION

 SELECT SUM(Clicks) AS  rent, 'rents' as type
 FROM ClicksPerDay
 WHERE BannerID = 3457
) total

我的输出是：

sales | type
 23   | rents
 26   | sales

我需要这样：

 sales | rents
   26  |  23

Answer 1

尝试以下方法：

SELECT
    SUM( IF(BannerId = 3456, Clicks, 0) ) AS  sales,
    SUM( IF(BannerId = 3457, Clicks, 0) ) AS  rents
FROM ClicksPerDay
WHERE BannerID IN (3456, 3457)

Answer 2

像这样：

SELECT sales = SUM(sales), rent = SUM(clicks) FROM
(
 SELECT SUM(Clicks) AS  sales , 0 as rent
 FROM ClicksPerDay
 WHERE BannerID = 3456

 UNION ALL

 SELECT 0 as sales, SUM(Clicks) AS  rent
 FROM ClicksPerDay
 WHERE BannerID = 3457
) total

Answer 3

尝试使用交叉连接 - 不完全是它的目的，但由于你只有2个结果，它应该可以工作 - 但是你必须省略“'sales'作为类型”和“'rents'作为类型”投影。

mysql UNION查询输出

3 个答案: