Total in a mysql pivot query - mysql

Question

I've this pivot query:
SELECT `fonte`,
MAX(IF(month= '1', sell, NULL)) AS Gen,
MAX(IF(month= '2', sell, NULL)) AS Feb,
MAX(IF(month= '3', sell, NULL)) AS Mar,
MAX(IF(month= '4', sell, NULL)) AS Apr,
MAX(IF(month= '5', sell, NULL)) AS Mag,
MAX(IF(month= '6', sell, NULL)) AS Giu,
MAX(IF(month= '7', sell, NULL)) AS Lug,
MAX(IF(month= '8', sell, NULL)) AS Ago,
MAX(IF(month= '9', sell, NULL)) AS Sett,
MAX(IF(month= '10', sell, NULL)) AS Ott,
MAX(IF(month= '11', sell, NULL)) AS Nov,
MAX(IF(month= '12', sell, NULL)) AS Dic,
FROM `pdl_dati` group by fonte
How can I insert the "total" for month='1' and month='2' and month='3' and month='4' and month='5' and month='6' and month='7' and month='8' and month='9' and month='10' and month='11' and month='12'?
Thanks

Answer 1

If you want a final row that has a total for each month you can use GROUP BY WITH ROLLUP:
SELECT `fonte`,
MAX(IF(month= '1', sell, NULL)) AS Gen, -- do you want this to be sum?
MAX(IF(month= '2', sell, NULL)) AS Feb,
MAX(IF(month= '3', sell, NULL)) AS Mar,
MAX(IF(month= '4', sell, NULL)) AS Apr,
MAX(IF(month= '5', sell, NULL)) AS Mag,
MAX(IF(month= '6', sell, NULL)) AS Giu,
MAX(IF(month= '7', sell, NULL)) AS Lug,
MAX(IF(month= '8', sell, NULL)) AS Ago,
MAX(IF(month= '9', sell, NULL)) AS Sett,
MAX(IF(month= '10', sell, NULL)) AS Ott,
MAX(IF(month= '11', sell, NULL)) AS Nov,
MAX(IF(month= '12', sell, NULL)) AS Dic
FROM `pdl_dati`
group by fonte with ROLLUP;
As a side note, if you are attempting to get the total for each fonte by month, I would think you would want to use sum instead of max. See Demo