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@mattm
Last active April 23, 2017 18:36
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Cross Join
SELECT id, amount, ROUND(amount / total * 100) AS percent
FROM charges
CROSS JOIN (SELECT SUM(amount) AS total FROM charges) t;
+----+--------+---------+
| id | amount | percent |
+----+--------+---------+
| 1 | 18.00 | 30 |
| 2 | 15.00 | 25 |
| 3 | 27.00 | 45 |
+----+--------+---------+
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