[英]Join two tables plus pivot table as a stored-procedure - MySQL
I'm trying to make a order procedure on MySQL to make a pivot table as a result, but it is really complicated and I've no clue how to do it, I don't know if there is another way to do it more easy. 我正在尝试在MySQL上执行订购程序以创建数据透视表,但是它确实很复杂,我不知道如何执行此操作,我不知道是否还有另一种方法可以执行更多操作简单。
I need to get how many products has been bought in specifics addresses, result of GROUP_CONCAT(ship_addr + ship_zip + ship_contry). 我需要获取在GROUP_CONCAT(ship_addr + ship_zip + ship_contry)的特定地址中购买了多少产品。
Order table - Containing the order address. 订单表 -包含订单地址。
+----+----------------+----------+--------------+
| id | ship_addr | ship_zip | ship_country |
+----+----------------+----------+--------------+
| 1 | Addr1 | 123 | DE |
| 2 | Addr2 | 321 | DE |
| 3 | Addr1 | 123 | DE |
| 4 | Addr2 | 321 | DE |
| 5 | Addr3 | 543 | DE |
+----+----------------+----------+--------------+
Order positions table 订单头寸表
+----+---------------+------------+--------------+
| id | order_id | product_id | quantity |
+----+----------------+-----------+--------------+
| 1 | 1 | 1 | 5 |
| 2 | 1 | 2 | 10 |
| 3 | 2 | 3 | 5 |
| 4 | 3 | 1 | 5 |
| 5 | 4 | 1 | 10 |
| 6 | 5 | 1 | 10 |
+----+----------------+----------+---------------+
The expected result, column headers are product_id: 预期结果,列标题为product_id:
+-----------------+-------+-------+-------+
| Address | 1 | 2 | 3 |
+-----------------+-------+-------+-------+
| Addr1, 123, DE | 10 | 10 | 0 |
| Addr2, 321, DE | 10 | 0 | 5 |
| Addr3, 543, DE | 10 | 0 | 0 |
+-----------------+-------+-------+-------+
I can't copy the store procedures I tried because they are completely failures. 我无法复制尝试的存储过程,因为它们完全是失败的。
Hi I come up with this solution just one part is missing to replace null with zero . 嗨,我想出了这个解决方案,只是缺少了一个部分,无法将null替换为零。 i will try when I hot more time but the result is as per your expectation. 我会花更多的时间尝试尝试,但是结果符合您的期望。 Attached the out put as well . 以及附带的输出。 here it is worth to mention that the pivoted column needs ie(product_id) to be added statically . 这里值得一提的是,枢轴列需要ie(product_id)进行静态添加。 If you want then you can created a dynamic query to accommodated these pivoted columns as well . 如果需要,您还可以创建一个动态查询来容纳这些透视列。 Since it is taged with sql-server my answer is from SQL Server syntax . 由于它是用sql-server标记的,因此我的答案来自SQL Server语法。
declare @order as table (
id int , ship_addr varchar(100),ship_zip varchar(100) , ship_country varchar(100)
)
insert into @order (id,ship_addr,ship_zip,ship_country) values (1,'Add1','123','DE')
insert into @order (id,ship_addr,ship_zip,ship_country) values (2,'Add2','321','DE')
insert into @order (id,ship_addr,ship_zip,ship_country) values (3,'Add1','123','DE')
insert into @order (id,ship_addr,ship_zip,ship_country) values (4,'Add2','321','DE')
insert into @order (id,ship_addr,ship_zip,ship_country) values (5,'Add3','543','DE')
declare @orderposition as table (
id int , order_id int ,product_id int , quantity int
)
insert into @orderposition (id,order_id,product_id,quantity) values (1,1,1,5)
insert into @orderposition (id,order_id,product_id,quantity) values (2,1,2,10)
insert into @orderposition (id,order_id,product_id,quantity) values (3,2,3,5)
insert into @orderposition (id,order_id,product_id,quantity) values (4,3,1,5)
insert into @orderposition (id,order_id,product_id,quantity) values (5,4,1,10)
insert into @orderposition (id,order_id,product_id,quantity) values (6,5,1,10)
select pvt.fulladd as Address , ISNULL([1],0) as [1] , ISNULL([2],0) as [2] , ISNULL([3],0) as [3] from
(select fulladd, product_id , sum( isnull( quantity,0)) as qty from (
select (o.ship_addr +' , ' + o.ship_zip +' ,' + o.ship_country) as fulladd , o.id from @order o
) as o
inner join @orderposition p on p.order_id= o.id
group by fulladd, p.product_id
) as final
pivot
(
max(qty) for product_id in ([1],[2],[3])
) as pvt
with cte as (
select t1.product_id, sum(t1.quantity) as quantity, t2.addr from order_positions t1
inner join (select id, ship_addr+', '+convert(varchar,ship_zip)+', '+ship_country as addr from order) t2
on t2.id = t1.order_id group by t2.addr, t1.product_id )
select addr, isnull([1],0), isnull([2],0),isnull([3],0) from cte
pivot (sum(quantity) for [product_id] in ([1],[2],[3])) as pivottable
A way to do this is using group aggregation - note if you have more products you may need to invoke dynamic sql. 一种方法是使用组聚合-请注意,如果您有更多产品,则可能需要调用动态sql。
select concat(ship_addr,char(44),ship_zip,char(44),ship_country) address,
sum(case when product_id = 1 then quantity else 0 end) as p1,
sum(case when product_id = 2 then quantity else 0 end) as p2,
sum(case when product_id = 3 then quantity else 0 end) as p3
from orderaddress oa
join orderposition op
where op.order_id = oa.id
group by ship_addr,ship_zip,ship_country
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.