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SET AUTOCOMMIT = 0
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START TRANSACTION
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DROP DATABASE IF EXISTS `base`
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CREATE DATABASE `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
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DROP TABLE IF EXISTS `test`
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CREATE TABLE IF NOT EXISTS `test`
( `id` integer unsigned not null auto_increment primary key,
`ref` varchar(255) not null,
`date` date not null,
`qte` integer unsigned not null
) engine=innoDB
default charset=latin1 collate=latin1_general_ci
row_format=compressed
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insert into `test` (`ref`,`date`,`qte`) values
('ref 1', '2016-06-01', 10),
('ref 1', '2016-06-02', 10),
('ref 1', '2016-06-03', 10),
('ref 1', '2016-06-04', 10),
('ref 1', '2016-06-05', 10),
('ref 1', '2016-06-06', 10),
('ref 2', '2016-06-01', 7),
('ref 2', '2016-06-02', 7),
('ref 2', '2016-06-02', 7),
('ref 2', '2016-06-03', 7),
('ref 2', '2016-06-03', 7),
('ref 2', '2016-06-04', 7)
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select * from test
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+----+-------+------------+-----+
| id | ref | date | qte |
+----+-------+------------+-----+
| 1 | ref 1 | 2016-06-01 | 10 |
| 2 | ref 1 | 2016-06-02 | 10 |
| 3 | ref 1 | 2016-06-03 | 10 |
| 4 | ref 1 | 2016-06-04 | 10 |
| 5 | ref 1 | 2016-06-05 | 10 |
| 6 | ref 1 | 2016-06-06 | 10 |
| 7 | ref 2 | 2016-06-01 | 7 |
| 8 | ref 2 | 2016-06-02 | 7 |
| 9 | ref 2 | 2016-06-02 | 7 |
| 10 | ref 2 | 2016-06-03 | 7 |
| 11 | ref 2 | 2016-06-03 | 7 |
| 12 | ref 2 | 2016-06-04 | 7 |
+----+-------+------------+-----+
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select t1.id, t1.ref, t1.date, sum(t1.qte) as qte
from test as t1
inner join test as t2
on t2.ref = t1.ref
and t2.date >= t1.date
group by t1.id, t1.ref, t1.date
order by t1.id, t1.ref, t1.date
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+----+-------+------------+------+
| id | ref | date | qte |
+----+-------+------------+------+
| 1 | ref 1 | 2016-06-01 | 60 |
| 2 | ref 1 | 2016-06-02 | 50 |
| 3 | ref 1 | 2016-06-03 | 40 |
| 4 | ref 1 | 2016-06-04 | 30 |
| 5 | ref 1 | 2016-06-05 | 20 |
| 6 | ref 1 | 2016-06-06 | 10 |
| 7 | ref 2 | 2016-06-01 | 42 |
| 8 | ref 2 | 2016-06-02 | 35 |
| 9 | ref 2 | 2016-06-02 | 35 |
| 10 | ref 2 | 2016-06-03 | 21 |
| 11 | ref 2 | 2016-06-03 | 21 |
| 12 | ref 2 | 2016-06-04 | 7 |
+----+-------+------------+------+
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COMMIT
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SET AUTOCOMMIT = 1
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