SQL 为每个属性添加总和行

Question

I'm trying to create a new total sum row for every state.

Sample table:

| State | Item | Amount
    A      X      100
    B      Y      200
    A      Z      100
    B      X      150

Result:

| State | Item | Amount
    A      X      100
    A      Z      100
 Total A          200
    B      Y      200
    B      X      150
 Total B          350

Is there SQL query that I can use to execute that table

Answer 1

Try below query.

SELECT * FROM states_YourtableName
    UNION
    SELECT 'Total '+[state] State ,'' Item ,SUM(Amount) Amount
    FROM states_YourtableName GROUP BY [State]

You will get an output as below

state   Item    Amount
A        X      100
A        Z      100
B        X      150
B        Y      200
Total A         200
Total B         350

Answer 2

In SQL Server you can use ROLLUP on a GROUP BY clause to get intermediate and overall sums over the grouped by fields. In your case you would group by both state and item to get all rows:

SELECT CASE WHEN State IS NULL THEN 'Grand Total'
            WHEN Item IS NULL THEN CONCAT('Total ', State)
            ELSE State
       END AS State,
       Item, 
       SUM(Amount) AS Amount
FROM data
GROUP BY ROLLUP(State, Item)

Output:

State           Item    Amount
A               X       100
A               Z       100
Total A         (null)  200
B               X       150
B               Y       200
Total B         (null)  350
Grand Total     (null)  550

Demo on SQLFiddle

Answer 3

The simplest way would be UNION ALL . If it suffices to show the state instead of 'Total <state>', this becomes:

select state, item, amount from mytable
union all
select state, null, sum(amount) from mytable group by state
order by state, case when item is null then 2 else 1 end, item;

Result:

State | Item | Amount
------+------+-------
    A |    X |    100
    A |    Z |    100
    A |      |    200
    B |    Y |    200
    B |    X |    150
    B |      |    350

Answer 4

SQL is not working as an excel file, it is mostly used to store and process data. If you want to store that data(the Total) in SQL in my opinion the best way to do it is to create another table where you can keep your totals.

If you try just to print the totals in your screen you can check the link https://www.w3schools.com/sql/sql_count_avg_sum.asp

Answer 5

You can use group by with Rollup

Try this -

declare @Data table
([State] varchar(20), Item varchar(20), Amount int )

Insert into @Data
values
(    'A',      'X',      100),
(    'B',      'Y',      200),
(    'A',      'Z',      100),
(    'B',      'X',      150)

Select [State], Item, Sum(Amount) Amount
From @Data
Group by [State], Item with Rollup

Answer 6

I recommend grouping sets . It provides much more control than rollup :

select state, coalesce(item, 'Total') as item,
       sum(amount) as amount
from t
group by grouping sets ( (state, item), (state) );