Question

我有一个我的MYSQL数据库的SQL查询，并希望将结果限制为只有10个销售人员而不是20个。我已经尝试在查询中插入他们的名字，但一直收到错误。也可以根据总数进行排名。我正在使用的SQL查询是：

select sales_id, totalbuy, totalsell, totalbuy + totalsell as total from
(select sales_id, SUM(CASE WHEN side= 'buy' THEN 1 ELSE 0 END) AS totalbuy, 
SUM(CASE WHEN side= 'sell' THEN 1 ELSE 0 END) AS totalsell
from sales_id where sales_id='sales1', GROUP BY sales_id)q

它表示sales1我试图使用逗号和单引号添加剩余的9个sales_ids但无法使其工作。

Answer 1

如果您只想要某个sales_id，请使用“IN”子句。

如果您只想要前10名，请删除该行并使用LIMIT

select sales_id, totalbuy, totalsell, totalbuy + totalsell as total from
(select owner_id, SUM(CASE WHEN side= 'buy' THEN 1 ELSE 0 END) AS totalbuy, 
SUM(CASE WHEN side= 'sell' THEN 1 ELSE 0 END) AS totalsell
from sales_id  
where sales_id in ('sales1', 'sales2', 'sales3', 'sales4')-- if you wanna certain sales_id only
GROUP BY sales_id)q
order by total desc
limit 0, 10;--top 10 by total (bigger first)

根据总数限制sql查询和排名

1 个答案: