Question

我想将两个sql语句作为一个。第一个显示每日下达的总订单，第二个显示每天只有员工作为操作文本的订单数。

select date(dated) date_ord, count(*) as orders_placed
from stats.sales_actions 
group by date_ord 
order by dated desc

select date(dated) date_order, count(*) as orders_modified
from stats.sales_actions 
where action_text LIKE '%STAFF%'
group by date_ord 
order by dated desc

如果可能，我想在一个表/ sql查询中显示。

Answer 1

只需使用UNION：

select date(dated) date_ord, count(*), 'orders_places' as orders_placed
from stats.sales_actions 
group by date_ord 
order by dated desc
UNION
select date(dated) date_order, count(*), 'orders_modified' as orders_modified
from stats.sales_actions 
where action_text LIKE '%STAFF%'
group by date_ord 
order by dated desc

Answer 2

您可以使用UNION来实现此目的 - 然后您可以使用AS关键字为count列指定一个名称，以便将它们彼此区分开来。例如：

select date(dated) date_ord, count(*) AS placed, 'orders_places' as orders_placed
from stats.sales_actions 
group by date_ord 
order by dated desc
UNION
select date(dated) date_order, count(*) AS modified, orders_modified' as orders_modified
from stats.sales_actions 
where action_text LIKE '%STAFF%'
group by date_ord 
order by dated desc

Answer 3

select   date_ord, sum( orders_placed) as orders_placed ,   
          sum( orders_modified) as orders_modified
   from( 

            select date(dated) date_ord, count(*) as orders_placed , 0 as orders_modified
            from stats.sales_actions 
            group by date_ord 
            order by dated desc

           UNION

            select date(dated) date_ord, 0 as orders_placed, count(*)  as orders_modified
            from stats.sales_actions 
            where action_text LIKE '%STAFF%'
            group by date_ord 
            order by dated desc
        ) temp
          group by date_ord 
          order by dated desc

Answer 4

select date(dated) date_ord, 
count(*) as orders_placed, 
SUM (
        CASE 
           WHEN action_text LIKE '%STAFF%' 
           THEN 1 ELSE 0 END) AS ORDERS_STAFF 
from stats.sales_actions 
group by date_ord 
order by dated desc

这会在一行中显示两个值。如果您喜欢2行，只需在查询之间使用联合。

一个嵌套的SQL查询中的两个查询

4 个答案: