如何添加列的总和以及表的所有其他行

Question

我有桌子

 name  quentity
 pramo  1000
 ladkat 2000

我希望选择输出为总和的新行

   name     quentity
   pramod   1000
   ladkat   2000
   total    3000

Answer 1

尝试使用UNION：

(SELECT *
 FROM your_table)
    UNION 
(SELECT sum(quentity) as "total"
 FROM  your_table)

Answer 2

SQL Server，你可以试试这个：

SELECT name,quentity
FROM [your-table]
UNION
SELECT 'Total',SUM(quentity)
FROM [your-table]

Answer 3

使用Union Operator，就像这样

select * from test.item
union
select "Total", sum(qty)  from test.item;

Answer 4

大多数数据库都支持某些版本的rollup或grouping sets。例如：

select coalesce(name, 'Total') as name, sum(quantity) as quantity
from t
group by name with rollup;

或：

select coalesce(name, 'Total') as name, sum(quantity) as quantity
from t
group by grouping sets ((name), ()) ;

请注意，它们使用聚合查询，因此您需要group by子句。