mysql - 如何在单个mysql表中添加总计的总和

Question

我有以下 MySQL 表：

Site_ID

序列号

cost_per_month

cost_per_unit_A

cost_per_unit_B

开放单元_A

关闭_unit_A

开放单元B

关闭_unit_B

我执行以下 MySQL 查询：

select 
SITE_ID as 'Site', Serial Number,cost_per_month
cost_per_unit_A, cost_per_unit_B,opening_unit_A, closing_unit_A, opening_unit_B, closing_unit_B
format(cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,2) as 'Total Vat Ex',
format((cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,*0.14,2)) as 'Vat',
format((cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,*1.14,2)) as 'Total Vat inclusive'
where SITE_ID ='Site Name'

我想更改此查询，以便总计最后一次添加查询的总和。

我会使用 group by 语句吗？

Answer 1

select 
SITE_ID as 'Site', 
Serial Number,
cost_per_month
cost_per_unit_A, 
cost_per_unit_B,
opening_unit_A,
closing_unit_A, 
opening_unit_B, 
closing_unit_B,
SUM(format(cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,2)) as 'Total Vat Ex',
SUM(format((cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,*0.14,2))) as 'Vat',
SUM(format((cost_per_month+(closing_unit_A-opening_unit_A)*cost_per_unit_A+(closing_unit_B-opening_unit_B)*cost_per_unit_A,*1.14,2))) as 'Total Vat inclusive'
From reading
where SITE_ID ='Site Name'
Group By 
SITE_ID, 
Serial Number,
cost_per_month
cost_per_unit_A, 
cost_per_unit_B,
opening_unit_A,
closing_unit_A, 
opening_unit_B, 
closing_unit_B