Question

我有一张表，我需要按照account_name和deal_id = X的产品的四分之一创建总销售额。

然后，我希望获得上一季度最大百分比涨幅前10名。

我一直在创建临时表，但表的大小约为1G，性能不是我们想要的。我们可以创建另一个汇总表，但在此之前我想看看是否有人建议首先使用此表。

account_name    product_title   type    period  deal_id total_amount
Account1    product1    Type A  2002_Q4 9100    146.54
Account1    product1    Type B  2002_Q4 9100    34.32
Account1    product1    Type C  2002_Q4 9100    0.02
Account1    product2    Type A  2002_Q4 9100    14.45
Account1    product2    Type B  2002_Q4 9100    3.58
Account1    product1    Type A  2002_Q3 9100    68.23
Account1    product1    Type B  2002_Q3 9100    12.56
Account1    product1    Type C  2002_Q3 9100    75.21
Account1    product2    Type A  2002_Q3 9100    5.68
Account1    product2    Type B  2002_Q3 9100    3.2

product1    180.88  2002_Q4 16%     
product2    18.03   2002_Q4 103%        
product1    156     2002_Q3         
product2    8.88    2002_Q3

好的，我添加了新数据，并列出了上一季度所列增加的结果。

Answer 1

以下是使用固定四分位数的一种方法：

select d.product_title, ((
        select sum(d1.total_amount)
        from deals d1
        where d1.account_name = 'Account1'
          and d1.deal_id = d.deal_id
          and d1.product_title = d.product_title
          and d1.period  = '2002_Q4'
    ) - sum(d.total_amount)) / sum(d.total_amount) * 100
    as diff
from deals d
where d.account_name = 'Account1'
  and d.deal_id = 9100
  and d.period = '2002_Q3'
group by d.product_title
order by diff desc
limit 10

http://sqlfiddle.com/#!9/65bd95/26

这是另一个 - 加入两个子查询：

select
  q3.product_title, 
  100 * (q4.total - q3.total) / q3.total as diff
from (
  select d.product_title, sum(d.total_amount) as total
  from deals d
  where d.account_name = 'Account1'
    and d.deal_id = 9100
    and d.period = '2002_Q3'
  group by d.product_title
) q3
join  (
  select d.product_title, sum(d.total_amount) as total
  from deals d
  where d.account_name = 'Account1'
    and d.deal_id = 9100
    and d.period = '2002_Q4'
  group by d.product_title
) q4 using (product_title)
order by diff desc
limit 10

http://sqlfiddle.com/#!9/65bd95/9

有用的索引是(account_name, period, deal_id, product_title, total_amount)。前三列可以按任何顺序排列。最后一个是可选的，但是它可以覆盖＆＃34;覆盖＆＃34;索引。

SQL Quarter Total和％增加前十名

1 个答案: