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|
--------------
SET AUTOCOMMIT = 0
--------------
--------------
START TRANSACTION
--------------
--------------
DROP DATABASE IF EXISTS `base`
--------------
--------------
CREATE DATABASE `base`
DEFAULT CHARACTER SET `utf8`
DEFAULT COLLATE `utf8_bin`
--------------
--------------
DROP TABLE IF EXISTS `test`
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--------------
CREATE TABLE IF NOT EXISTS `test`
( `id` integer unsigned not null auto_increment primary key,
`nom` varchar(255) not null
) engine=innoDB
default charset=utf8 collate=utf8_bin
row_format=compressed
--------------
--------------
insert into `test` (`nom`) values
('forêt'), ('été'), ('après'), ('aigüe'), ('canoë'), ('15')
--------------
--------------
select id, nom, length(nom) from test
--------------
+----+-------+-------------+
| id | nom | length(nom) |
+----+-------+-------------+
| 1 | forêt | 6 |
| 2 | été | 5 |
| 3 | après | 6 |
| 4 | aigüe | 6 |
| 5 | canoë | 6 |
| 6 | 15 | 5 |
+----+-------+-------------+
--------------
select schema_name,
default_character_set_name,
default_collation_name
from information_schema.schemata
where schema_name = 'base'
--------------
+-------------+----------------------------+------------------------+
| schema_name | default_character_set_name | default_collation_name |
+-------------+----------------------------+------------------------+
| base | utf8 | utf8_bin |
+-------------+----------------------------+------------------------+
--------------
select table_schema,
table_name,
table_collation
from information_schema.tables as t
inner join information_schema.collation_character_set_applicability as c
on c.collation_name = t.table_collation
where t.table_schema = 'base'
and t.table_name = 'test'
--------------
+--------------+------------+-----------------+
| table_schema | table_name | table_collation |
+--------------+------------+-----------------+
| base | test | utf8_bin |
+--------------+------------+-----------------+
--------------
select table_schema,
table_name,
column_name,
character_set_name,
collation_name
from information_schema.columns
where table_schema = 'base'
and table_name = 'test'
and column_name = 'nom'
--------------
+--------------+------------+-------------+--------------------+----------------+
| table_schema | table_name | column_name | character_set_name | collation_name |
+--------------+------------+-------------+--------------------+----------------+
| base | test | nom | utf8 | utf8_bin |
+--------------+------------+-------------+--------------------+----------------+
--------------
show full columns from test
--------------
+-------+------------------+-----------+------+-----+---------+----------------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+------------------+-----------+------+-----+---------+----------------+---------------------------------+---------+
| id | int(10) unsigned | NULL | NO | PRI | NULL | auto_increment | select,insert,update,references | |
| nom | varchar(255) | utf8_bin | NO | | NULL | | select,insert,update,references | |
+-------+------------------+-----------+------+-----+---------+----------------+---------------------------------+---------+
--------------
show create table `test`
--------------
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| test | CREATE TABLE `test` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`nom` varchar(255) COLLATE utf8_bin NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 COLLATE=utf8_bin ROW_FORMAT=COMPRESSED |
+-------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
--------------
alter database `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
--------------
--------------
alter table `test`
convert to character set `latin1` collate `latin1_general_ci`
--------------
--------------
select id, nom, length(nom) from test
--------------
+----+-------+-------------+
| id | nom | length(nom) |
+----+-------+-------------+
| 1 | forêt | 5 |
| 2 | été | 3 |
| 3 | après | 5 |
| 4 | aigüe | 5 |
| 5 | canoë | 5 |
| 6 | 15 | 3 |
+----+-------+-------------+
--------------
select schema_name,
default_character_set_name,
default_collation_name
from information_schema.schemata
where schema_name = 'base'
--------------
+-------------+----------------------------+------------------------+
| schema_name | default_character_set_name | default_collation_name |
+-------------+----------------------------+------------------------+
| base | latin1 | latin1_general_ci |
+-------------+----------------------------+------------------------+
--------------
select table_schema,
table_name,
table_collation
from information_schema.tables as t
inner join information_schema.collation_character_set_applicability as c
on c.collation_name = t.table_collation
where t.table_schema = 'base'
and t.table_name = 'test'
--------------
+--------------+------------+-------------------+
| table_schema | table_name | table_collation |
+--------------+------------+-------------------+
| base | test | latin1_general_ci |
+--------------+------------+-------------------+
--------------
select table_schema,
table_name,
column_name,
character_set_name,
collation_name
from information_schema.columns
where table_schema = 'base'
and table_name = 'test'
and column_name = 'nom'
--------------
+--------------+------------+-------------+--------------------+-------------------+
| table_schema | table_name | column_name | character_set_name | collation_name |
+--------------+------------+-------------+--------------------+-------------------+
| base | test | nom | latin1 | latin1_general_ci |
+--------------+------------+-------------+--------------------+-------------------+
--------------
show full columns from test
--------------
+-------+------------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+------------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
| id | int(10) unsigned | NULL | NO | PRI | NULL | auto_increment | select,insert,update,references | |
| nom | varchar(255) | latin1_general_ci | NO | | NULL | | select,insert,update,references | |
+-------+------------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
--------------
show create table `test`
--------------
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| test | CREATE TABLE `test` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`nom` varchar(255) COLLATE latin1_general_ci NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci ROW_FORMAT=COMPRESSED |
+-------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
--------------
COMMIT
--------------
--------------
SET AUTOCOMMIT = 1
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