Question

我的sql表如下：

SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
create table ad(
  ad_id int,
  ad_name varchar(10)
);

create table ad_insight(
   id int,
   ad_id int,
   date date, 
   clicks int
 );
create table product(
    product_id int,
    product_name varchar(10)
);
create table product_insight(
    id int,
    product_id int, 
    sale int, 
    date date
);
create table ads_products(
    ad_id int,
    product_id int
);                              
                                    
insert into ad(ad_id, ad_name) values
  (1,'ad1'),
  (2,'ad2'),
  (3,'ad3');
 
 
insert into ad_insight(id, ad_id, date, clicks) values
    (1, 1, '2021-04-25', 1),
    (2, 1, '2021-04-24', 4),
    (3, 1, '2021-04-23', 2),
    (4, 2, '2021-04-25', 6),
    (5, 2, '2021-03-03', 7);


insert into product(product_id, product_name) values
    (1,'prod1'),
    (2,'prod2'),
    (3,'prod3'),
    (4,'prod4'),
    (5,'prod5');
insert into ads_products (ad_id, product_id) values 
    (1, 1),
    (1, 2),
    (2, 3),
    (2, 4),
    (3, 1); 
insert into product_insight(id, product_id, sale, date) values
    (1, 1, 12, '2021-04-25'),
    (2, 1, 11, '2021-04-24'),
    (3, 1, 13, '2021-04-23'),
    (4, 1, 14, '2021-04-22'),
    (5, 1, 17, '2021-04-21'),
    (6, 1, 15, '2021-04-20'),
    (7, 1, 13, '2021-04-19'),
    (8, 2, 19, '2021-04-25');

这里有fiddle

模式的快速解释：我有广告：

每个广告都有洞察力，可以告诉我们某个广告何时处于活动状态。
每个广告都有产品（many2many - ads_products 表）。每个产品都有 product_insight，它告诉我们该产品在某一天产生了多少销售额。

现在我想得到下表，该表将汇总 ad_insight 表中的点击次数，并汇总 product_insight 至 2021-04-23 中的 2021-04-25 的 product_sale。

+----------+--------+--------------+--------------+
| ad_name  | clicks | product_sale |   products   |
+----------+--------+--------------+--------------+
| ad1      |      7 |           55 | prod1, prod2 |
| ad2      |      6 |            0 | prod3, prod4 |
| ad3      |      0 |           36 | prod1        |
+----------+--------+--------------+--------------+

我尝试了什么？

select ad_name, SUM(ad_insight.clicks) as clicks 
from ad 
left join ad_insight on ad.ad_id = ad_insight.ad_id 
where ad_insight.date >= '2021-04-23' and ad_insight.date <= '2021-04-25'
group by ad.ad_id;

但是我不知道如何选择以逗号分隔的product_sale表和产品？

Answer 1

编写子查询以获取日期范围内每个广告的点击和销售总额。将这些与 ad 表连接以获取广告名称，将这些与 product 表连接以获取产品名称。使用 GROUP_CONCAT 组合产品名称。

SELECT ad.ad_name, IFNULL(clicks, 0) AS clicks, IFNULL(product_sale, 0) AS product_sale, IFNULL(GROUP_CONCAT(DISTINCT p.product_name), '') AS products
FROM ad
LEFT JOIN (
    SELECT ad_id, SUM(clicks) AS clicks
    FROM ad_insight
    WHERE date BETWEEN '2021-04-23' AND '2021-04-25'
    GROUP BY ad_id
) AS ai ON ai.ad_id = ad.ad_id
LEFT JOIN (
    SELECT ad_id, SUM(sale) AS product_sale
    FROM ads_products AS ap
    LEFT JOIN product_insight AS pi ON pi.product_id = ap.product_id
    WHERE date BETWEEN '2021-04-23' AND '2021-04-25'
    GROUP BY ad_id
) AS pi ON pi.ad_id = ad.ad_id
LEFT JOIN ads_products AS ap ON ap.ad_id = ad.ad_id
LEFT JOIN product AS p ON ap.product_id = p.product_id
GROUP BY ad.ad_id

DEMO

高级总和聚合字段

1 个答案: