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mysqlsqlzeromonthcalendarnot-exists

MySQL monthly Sale of last 12 months including months with no Sale


SELECT DATE_FORMAT(date, "%b") AS month, SUM(total_price) as total
FROM cart
WHERE date <= NOW()
and date >= Date_add(Now(),interval - 12 month)
GROUP BY DATE_FORMAT(date, "%m-%Y")

This query displaying result for only existing month. I need all 12 months sales.

Output:

"month" "total"  
--------------  
"Jun"   "22"
"Aug"   "30"
"Oct"   "19"
"Nov"   "123"
"Dec"   "410"

Required Output:

"month" "total"  
--------------
"Jan"   "0"
"Feb"   "0"
"Mar"   "0"
"Apr"   "0"
"May"   "0"
"Jun"   "22"
"Jul"   "0"
"Aug"   "30"
"Sep"   "0"
"Oct"   "19"
"Nov"   "123"
"Dec"   "410"

Solution

  • Thanks for @pankaj hint, Here i resolved it via this query...

    SELECT 
        SUM(IF(month = 'Jan', total, 0)) AS 'Jan',
        SUM(IF(month = 'Feb', total, 0)) AS 'Feb',
        SUM(IF(month = 'Mar', total, 0)) AS 'Mar',
        SUM(IF(month = 'Apr', total, 0)) AS 'Apr',
        SUM(IF(month = 'May', total, 0)) AS 'May',
        SUM(IF(month = 'Jun', total, 0)) AS 'Jun',
        SUM(IF(month = 'Jul', total, 0)) AS 'Jul',
        SUM(IF(month = 'Aug', total, 0)) AS 'Aug',
        SUM(IF(month = 'Sep', total, 0)) AS 'Sep',
        SUM(IF(month = 'Oct', total, 0)) AS 'Oct',
        SUM(IF(month = 'Nov', total, 0)) AS 'Nov',
        SUM(IF(month = 'Dec', total, 0)) AS 'Dec',
        SUM(total) AS total_yearly
        FROM (
    SELECT DATE_FORMAT(date, "%b") AS month, SUM(total_price) as total
    FROM cart
    WHERE date <= NOW() and date >= Date_add(Now(),interval - 12 month)
    GROUP BY DATE_FORMAT(date, "%m-%Y")) as sub