在选择查询的结果集中添加行

Question

I am trying achieve below eg.

this is what I have ...

  Name     Amount
  AAA        15
  AAA        20
  CCC        30
  CCC        50

this is what I want

  Name     Amount
  AAA        15
  AAA        20
             35     --(want to insert row which display sum of 1st & 2nd rows)
  CCC        30
  CCC        50 
             80      --(want to insert row which display sum of 3rd & 4th rows)

Answer 1

If you're just looking for a summary of rows by name, you could use a union, and a group by, and an order by:

DECLARE @tbl TABLE (Name char(3), Amount int)

insert @tbl
VALUES 
 ('AAA',15)
,('AAA',20)
,('CCC',30)
,('CCC',50)


select Name, Amount
FROM @tbl

UNION ALL

SELECT Name, SUM(Amount)
FROM @tbl GROUP BY Name

ORDER BY Name

For a working example using subquery and CTE (only used as an example replacement for the actual table), take the following:

with vals as
(
    select 'aaa' as Name, 15 as Amount
    union all
    select 'aaa' as Name, 10 as Amount
    union all
    select 'bbb' as Name, 20 as Amount
    union all
    select 'bbb' as Name, 30 as Amount
    union all
    select 'bbb' as Name, 50 as Amount
)
select *
from
(
    select 'Amount' as ValType, Name, Amount
    from vals
    union all
    select 'Total' as ValType, Name, sum(Amount)
    from vals
    group by Name
)
order by Name, ValType
;

This will group by the Name column, and sum within a subquery, then sort the output using manually added ValType identifier column.

Answer 2

I have done this using UNION

SELECT * FROM 
(SELECT * FROM (VALUES ('AAA',15),
                      ('AAA',20),
                      ('CCC',30),
                      ('CCC',50)) CT (NAME,AMOUNT)


UNION ALL

SELECT NAME+' '+ 'Total' as Tot ,SUM(AMOUNT) FROM (VALUES ('AAA',15),
                      ('AAA',20),
                      ('CCC',30),
                      ('CCC',50)) CT (NAME,AMOUNT)                      
GROUP BY NAME+' '+ 'Total') X

Answer 3

I suggest doing 2 selects and then use union all to join them

Select name, amount from table
union all
select '' as total, sum(amount) from table