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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 `test`
( `id` integer unsigned not null auto_increment primary key,
`lib` varchar(255) not null,
`type` char(01) not null
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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insert into `test` (`lib`,`type`) values
('blabla[un]blabla','A'),
('[deux]','A'),
('trois','A'),
('ssss[deux]vvvvv','B'),
('zzzzz[ulysse37]zzzzz','A'),
('[deux]yy','B'),
('yyyy[un]eee','B')
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select * from `test`
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+----+----------------------+------+
| id | lib | type |
+----+----------------------+------+
| 1 | blabla[un]blabla | A |
| 2 | [deux] | A |
| 3 | trois | A |
| 4 | ssss[deux]vvvvv | B |
| 5 | zzzzz[ulysse37]zzzzz | A |
| 6 | [deux]yy | B |
| 7 | yyyy[un]eee | B |
+----+----------------------+------+
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select substring_index(substring_index(lib,']',1),'[',-1) as Nom,
count(*) as Nbre,
sum(case type when 'A' then 1 else 0 end) as TypeA,
sum(case type when 'B' then 1 else 0 end) as TypeB
from test
where lib regexp '[[:alnum:]]*[[.left-square-bracket.]][[:alnum:]]+[[.right-square-bracket.]][[:alnum:]]*'
group by nom
order by nom
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+----------+------+-------+-------+
| Nom | Nbre | TypeA | TypeB |
+----------+------+-------+-------+
| deux | 3 | 1 | 2 |
| ulysse37 | 1 | 1 | 0 |
| un | 2 | 1 | 1 |
+----------+------+-------+-------+
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COMMIT
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SET AUTOCOMMIT = 1
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