CODEWITHSUNDEEP
mysqlsql
XIMRX
XIMRX

Reputation: 2170

How to SUM values for DISTINCT values of another column and GROUP BY date?

How can we SUM amount for each activity only on same date and output a row for each date? This query is not working.

SELECT SUM(amount), type, date FROM table GROUP BY DISTINCT date;

Table

+----+------------+-----------+---------+
| id |    date    | activity  | amount  |
+----+------------+-----------+---------+
| 1  | 2017-12-21 | Shopping  | 200     |
| 2  | 2017-12-21 | Gift      | 240     |
| 3  | 2017-12-23 | Give Away | 40      |
| 4  | 2017-12-24 | Shopping  | 150     |
| 5  | 2017-12-25 | Give Away | 120     |
| 6  | 2017-12-25 | Shopping  | 50      |
| 7  | 2017-12-25 | Shopping  | 500     |
+----+------------+-----------+---------+

Required Result

+------------+-----------+------+-----------+
|    date    | Shopping  | Gift | Give Away |
+------------+-----------+------+-----------+
| 2017-12-21 | 200       | 240  |           |
| 2017-12-23 |           |      | 40        |
| 2017-12-24 | 150       |      |           |
| 2017-12-25 | 550       |      | 120       |
+------------+-----------+------+-----------+

Upvotes: 0

Views: 903

Answers (3)

Daniel Machet
Daniel Machet

Reputation: 630

Hmmm, you can't pivot your results into column headers unless you know all possible values as demonstrated by slaasko but you can get the results using sql into a form which can be pivoted using your display tool ( e.g. slice of BI tool).

SELECT SUM(amount), activity, date FROM table GROUP BY date, activity;

Upvotes: 0

Nazmul Hasan
Nazmul Hasan

Reputation: 1977

You can try this. It returns exact result that you want

SELECT t.date,
    SUM(t.shopping_amount) AS shopping,
    SUM(t.gift_amount) AS gift,
    SUM(t.give_away_amount) AS give_away
FROM
(
    SELECT p.`date`, p.`activity`, p.`amount` AS shopping_amount,
        0 AS gift_amount, 0 AS give_away_amount
    FROM products p
    WHERE p.`activity` = 'Shopping'

    UNION

    SELECT p.`date`, p.`activity`, 0 AS shopping_amount,
        p.amount AS gift_amount, 0 AS give_away_amount
    FROM products p
    WHERE p.`activity` = 'Gift'

    UNION 

    SELECT p.`date`, p.`activity`, 0 AS shopping_amount,
        0 AS gift_amount, p.amount AS give_away_amount
    FROM products p
    WHERE p.`activity` = 'Give Away'
) t
GROUP BY t.date

Upvotes: 0

slaakso
slaakso

Reputation: 9050

Use:

select `date`, 
  sum(if (activity='Shopping', amount, null)) as 'Shopping',
  sum(if (activity='Gift', amount, null)) as 'Gift',
  sum(if (activity='Give Away', amount, null)) as 'Give Away'
from table
group by `date`

Upvotes: 4

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