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START TRANSACTION
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set session collation_connection = "latin1_general_ci"
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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` integer unsigned NOT NULL auto_increment Primary key,
`email` varchar(255) NOT NULL,
`cloture` date NULL
) ENGINE=InnoDB DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
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INSERT INTO `test` (`email`,`cloture`) VALUES
('jean.du.pont@gmail.com', '2020-02-12'),
('jean.du.pont@gmail.com', '2020-05-23'),
('jean.du.pont@gmail.com', '2020-07-05'),
('jean.du.pont@gmail.com', NULL),
('albert.dupontel@gmail.com', '2020-03-14'),
('albert.dupontel@gmail.com', '2020-07-14'),
('albert.dupontel@gmail.com', NULL)
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select * from `test`
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+----+---------------------------+------------+
| id | email | cloture |
+----+---------------------------+------------+
| 1 | jean.du.pont@gmail.com | 2020-02-12 |
| 2 | jean.du.pont@gmail.com | 2020-05-23 |
| 3 | jean.du.pont@gmail.com | 2020-07-05 |
| 4 | jean.du.pont@gmail.com | NULL |
| 5 | albert.dupontel@gmail.com | 2020-03-14 |
| 6 | albert.dupontel@gmail.com | 2020-07-14 |
| 7 | albert.dupontel@gmail.com | NULL |
+----+---------------------------+------------+
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select `email`,
count(*) as total,
sum(case when `cloture` is null then 0 else 1 end) as cloture
from `test`
group by `email`
order by `email`
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+---------------------------+-------+---------+
| email | total | cloture |
+---------------------------+-------+---------+
| albert.dupontel@gmail.com | 3 | 2 |
| jean.du.pont@gmail.com | 4 | 3 |
+---------------------------+-------+---------+
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COMMIT
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