I am running MySQL 5.5.20 on Windows Vista Business. I am having a bit of a problem with collation_connection. My default charset is utf8 and collation is ut8_unicode_ci. However, when I perform mysql dumps on the database, my functions and procedures have the collation_connection showing utf8_general_ci; for example,
/*!50003 SET collation_connection = utf8_general_ci*/ ;
Is it possible to specify MySQL to default to ut8_unicode_ci for collation_connection? I use MySQL Workbench to perform the mysql dumps.
Nowadays consider using utf8mb4 instead of utf8.
If you want the behavior you're describing, you first would execute:
SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci;
Then redefine affected functions, procedures and triggers.
Next time you execute mysqldump, generated file will have lines like this:
/*!50003 SET collation_connection = utf8mb4_unicode_ci*/ ;
More details about SET NAMES in MySQL Reference Manual.
Related
I have a mysql database in Gcloud using utf8 enconding and I want to change it to utf8mb4 to support storing emoticons.
I did this using my local version of mysql in my laptop and it worked fine using:
ALTER TABLE table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
ALTER DATABASE db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
But when I try to do the same in Gcloud, the commands are accepted and the encoding changes but I keep receiving this error when trying to insert the record:
"error": "could not execute statement; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement: Incorrect string value: '\xF0\x9F\xA6\x95' for column 'text' at row 1" }
I also changed character_set_server variable in gcloud to utf8mb4 and restarted the engine but it does not work. Does anybody know what else should I change?
Thanks!
I am trying to set character sets to utf8mb4 and collation sets to utf8mb4_unicode_ci. On my website the emoji's looks fine when I get the data out of the table with php/mysql select. Only in phpMyAdmin (4.8.4) I see most emoji's as one questionamrk.
I try this:
Add to /etc/my.cnf:
[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
Restart systemctl restart mariadb
I use on my website mysqli_set_charset($con, "utf8mb4");, <form accept-charset="UTF-8"> and <meta charset="utf-8">.
Result of SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%':
What am I doing wrong?
I use mysql version 5.5.60 (Mariadb).
Edit:
The problem might be phpmyadmin (4.8.4). It seems that phpMyAdmin is still using utf8. The global variabelen are set to utf8mb4 or utf8mb4_unicode_ci but I can't change the session variabelen:
I set in config.inc.php:
In the 'normal' table in phpMyAdmin:
And when I try SET NAMES everything looks fine:
Under General settings in phpMyAdmin the server connection collation is set on utf8_unicode_ci. I can select utf8mb4_unicode_ci, but then it switches back to utf8_unicode_ci :(
And on my website with select everything looks oké:
i want to change the character set of a table in mysql database to utf8mb4 without changing in config file .i dont want entire database to use utf8mb4 .
i already changed the database,table and procedures character set and collation to utf8mb4
alter database DBNAME CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
alter table tblname CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
i want to store emojis in mysql databse without changing the entire database to utf8mb4 .please help me
How can I change connection collation of mysql database?
I am using Mysql workbench 5.5 and mysql 5.5 in ubuntu 14.
When I execute a stored procedure, an error occurs:
Error Code: 1267. Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation '='
I have search though the internet, which has a temp solution that is to amend
COLLATE utf8_unicode_ci;
in the stored procedure.
But I want to fix this problem for all stored procedures in the future. I have found
SHOW VARIABLES LIKE 'collation%';
which return this.
collation_connection utf8_general_ci
collation_database utf8_unicode_ci
collation_server latin1_swedish_ci
how can I change utf8_general_ci to utf8_unicode_ci?
Look into your my.cnf, find the contents below near collation_server:
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
Then change your collation variables to:
collation_connection utf8_unicode_ci
collation_server latin1_swedish_ci
Remember to restart MySQL server service.
For DB collation, you can use the following SQL:
ALTER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8_unicode_ci;
or you can do it at Alter database screen in MySQL Workbench (always update this to the latest version!)
Firstly, I think the error message is because of the collation of stored procedure (connection) doesn't match the table. But I was wrong, the reason for the error is because of the collation of the column doesn't match the collation of the table.
I want to change to collation of column to 'utf8_unicode_ci' in my case. So
I have run this statement:
alter table <YourTableName>
MODIFY <YourColumnName> VARCHAR(XXX) COLLATE 'utf8_unicode_ci';
Please be aware that change of collation may result in data loss. For me, General -> Unicode, with all English in varchar column. There is none.
Further reading:
http://dev.mysql.com/doc/refman/5.7/en/charset-column.html
http://dev.mysql.com/doc/refman/5.7/en/charset-connection.html
http://dev.mysql.com/doc/refman/5.7/en/charset-database.html
In MySQL, how to change a variable such as character_set_client?
mysql> show variables like 'character_set%';
-------------------------+-------
character_set_client | latin1
to obtain
character_set_client | utf8
When starting MySQL client you have to specify --default-character-set=charset_name
From manual:
Use charset_name as the default character set for the client and
connection.
A common issue that can occur when the operating system uses utf8
or another multi-byte character set is that output from the mysql
client is formatted incorrectly, due to the fact that the MySQL
client uses the latin1 character set by default. You can usually
fix such issues by using this option to force the client to use the
system character set instead.
For example:
$>mysql -uUser -pPassword --default-character-set=utf8
For an example of how to set it via connection string see here.