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START TRANSACTION
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DROP DATABASE IF EXISTS `base`
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CREATE DATABASE IF NOT EXISTS `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 `test`
( `id_membre` integer unsigned NOT NULL auto_increment primary key,
`no_membre` char(10) NOT NULL,
`type` char(02) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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INSERT INTO `test` (`no_membre`,`type`) values
('MA-000001','MA'),
('MA-000002','MA'),
('C5-000001','C5'),
('ER-000001','ER'),
('ER-000002','ER'),
('ER-000003','ER'),
('CI-000001','CI'),
('MA-000003','MA'),
('MA-000004','MA'),
('C5-000001','C5'),
('C5-000001','C5')
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select * from `test`
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+-----------+-----------+------+
| id_membre | no_membre | type |
+-----------+-----------+------+
| 1 | MA-000001 | MA |
| 2 | MA-000002 | MA |
| 3 | C5-000001 | C5 |
| 4 | ER-000001 | ER |
| 5 | ER-000002 | ER |
| 6 | ER-000003 | ER |
| 7 | CI-000001 | CI |
| 8 | MA-000003 | MA |
| 9 | MA-000004 | MA |
| 10 | C5-000001 | C5 |
| 11 | C5-000001 | C5 |
+-----------+-----------+------+
--------------
select `no_membre`,
any_value(`type`) as `type`,
any_value(id_membre) as `id_membre`
from `test`
group by `no_membre`
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+-----------+------+-----------+
| no_membre | type | id_membre |
+-----------+------+-----------+
| MA-000001 | MA | 1 |
| MA-000002 | MA | 2 |
| C5-000001 | C5 | 3 |
| ER-000001 | ER | 4 |
| ER-000002 | ER | 5 |
| ER-000003 | ER | 6 |
| CI-000001 | CI | 7 |
| MA-000003 | MA | 8 |
| MA-000004 | MA | 9 |
+-----------+------+-----------+
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select count(distinct `no_membre`) as Nbre
from `test`
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+------+
| Nbre |
+------+
| 9 |
+------+
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COMMIT
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