[英]how to Create a monthly recurring payment cycle with php and mysql event scheduler?
考虑以下:
DROP TABLE IF EXISTS my_table;
CREATE TABLE my_table
(partner_id SERIAL PRIMARY KEY
,signup_date DATE
);
INSERT INTO my_table VALUES
(1,'2020-01-01'),
(2,'2020-03-15'),
(3,'2020-05-14'),
(4,'2020-07-13'),
(5,'2020-09-21');
SELECT partner_id
, FLOOR(DATEDIFF(CURDATE(),signup_date)/30) awards
FROM my_table;
+------------+--------+
| partner_id | awards |
+------------+--------+
| 1 | 9 |
| 2 | 7 |
| 3 | 5 |
| 4 | 3 |
| 5 | 0 |
+------------+--------+
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