Question

我有2个查询需要合并为1个查询，它们从同一张表中获取数据，但它们之间的差异很小

我需要合并以下查询：

select sum(balance_delta) as "Not Rental"
from h_driver_balance
where
    changed between (select current_date - interval '1 days') and (select current_date) 
and driver_balance_id in (select id 
                          from driver 
                          where driver_ds_account_id = 16 
                          and callsign not like '0%') 
and comment like 'Refill on the terminal 1%';

和

select sum(balance_delta) as "Rental"
from h_driver_balance
where
    changed between (select current_date - interval '1 days') and (select current_date) 
and driver_balance_id in (select id 
                          from driver 
                          where driver_ds_account_id = 16 
                          and callsign like '0%') 
and comment like 'Refill on the terminal 1%';

我曾经尝试过使用WITH和UNION，但是我似乎不了解某些东西。

Answer 1

如果需要两列，则可以通过单个查询和条件聚合来完成：

select sum(b.balance_delta) filter (where d.callsign not like '0%') as "Not Rental",
       sum(b.balance_delta) filter (where d.callsign like '0%') as "Rental"
from h_driver_balance b
  join driver d on d.id = b.driver_balance_id
where b.changed between current_date - interval '1 days' and current_date
  and d.driver_ds_account_id = 16 
  and b.comment like 'Refill on the terminal 1%';

将2个查询合并为1个查询

1 个答案: