Question

长期读者，第一次海报。

我正在努力巩固一张桌子，以便在运输途中丢失所售商品的价格。在此表中，我们有四种产品，三个原产国，三个过境国（货物在传递给客户之前首先运往哪里）和三个目的地国家。表格如下。

 Status         Product    Count    Origin    Transit     Destination
 --------------------------------------------------------------------
 Delivered      Shoes      100      Germany   France        USA
 Delivered      Books      50       Germany   France        USA
 Delivered      Jackets    75       Germany   France        USA
 Delivered      DVDS       30       Germany   France        USA
 Not Delivered  Shoes      7        Germany   France        USA
 Not Delivered  Books      3        Germany   France        USA
 Not Delivered  Jackets    5        Germany   France        USA
 Not Delivered  DVDS       1        Germany   France        USA
 Delivered      Shoes      300      Poland    Netherlands   Canada
 Delivered      Books      80       Poland    Netherlands   Canada
 Delivered      Jackets    25       Poland    Netherlands   Canada
 Delivered      DVDS       90       Poland    Netherlands   Canada
 Not Delivered  Shoes      17       Poland    Netherlands   Canada
 Not Delivered  Books      13       Poland    Netherlands   Canada
 Not Delivered  Jackets    1        Poland    Netherlands   Canada
 Delivered      Shoes      250      Spain     Ireland       UK
 Delivered      Books      20       Spain     Ireland       UK
 Delivered      Jackets    150      Spain     Ireland       UK
 Delivered      DVDS       60       Spain     Ireland       UK
 Not Delivered  Shoes      19       Spain     Ireland       UK
 Not Delivered  Books      8        Spain     Ireland       UK
 Not Delivered  Jackets    8        Spain     Ireland       UK
 Not Delivered  DVDS       10       Spain     Ireland       UK

我想创建一个新表，显示交付的商品数量，而不是一行交付，如下所示。

Product   Delivered   Not_Delivered   Origin    Transit      Destination
Shoes     100         7               Germany   France       USA
Books     50          3               Germany   France       USA
Jackets   75          5               Germany   France       USA
DVDS      30          1               Germany   France       USA
Shoes     300         17              Poland    Netherlands  Canada
Books     80          13              Poland    Netherlands  Canada
Jackets   25          1               Poland    Netherlands  Canada
DVDS      90          0               Poland    Netherlands  Canada
Shoes     250         19              Spain     Ireland      UK
Books     20          8               Spain     Ireland      UK
Jackets   150         8               Spain     Ireland      UK
DVDS      60          10              Spain     Ireland      UK

我已经看了一些其他帖子，到目前为止我还没找到我正在寻找的内容。也许这里的问题是代码中会有多个WHERE语句，以确保我不会将所有鞋子组合在一起，而是将所有国家/地区组合在一起。

这可以用SQL吗？

Answer 1

这样的东西？

select
product
,sum(case when status = 'Delivered' then count else 0 end) as delivered
,sum(case when status = 'Not Delivered' then count else 0 end) as not_delivered
,origin
,transit
,destination

from table

group by
product
,origin
,transit
,destination

Answer 2

这很容易;而不是每个产品，原产地，公交，目的地和状态一行，您只需要每个产品，原产地，公交和目的地一个结果行。因此按这四列分组并有条件地汇总：

select 
  product, origin, transit, destination,
  sum(case when status = 'Delivered' then "count" else 0 end) as delivered,
  sum(case when status = 'Not Delivered' then "count" else 0 end) as not_delivered
from mytable
group by product, origin, transit, destination;

BTW：对列名使用关键字不是一个好主意。我使用双引号来使用您的列count，这是标准SQL，但我不知道它是否适用于Google BigQuery。也许它必须是"Count"而不是"count"或其他完全不同的东西。）

使用多个WHERE状态符号

3 个答案: