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!
Related
I'm migrating a small Gyroscope app from MySQL to MariaDB. I asked this question earlier on why MariaDB would not start on latin1 as server encoding (MariaDB won't start when character-set-server = latin1 is in my.cnf), but now I've come to terms with using just utf8.
After importing the data dump:
mysql -uwebuser -p ezine < dump.sql
, what's supposed to be autotööstus shows up as autot??stus. In addition I got this error:
illegal mix of collations (latin1_general_ci implicit) and (utf8_general_ci coercible), storing ??
Attempt 1: I removed all the occurrences of charset=latin1 in the data dump, and the import terminated early with this error:
Specified key was too long; max key length is 767 bytes
Attempt 2: added back charset, but set it to charset=utf8, according to this post: MySQL Convert latin1 data to UTF8
The import works, but autotööstus is now showing as autotööstus
How do I interpret the data dump as latin1 encoded content but deposit into a utf8 storage?
If you cannot use latin1 as the default system encoding for whatever reason, here's a quick solution:
Leave the data dump as-is. Even though it's latin1 encoded, it can be imported as utf8.
mysql> create database ezine character set utf8 collate utf8_general_ci;
mysql -uwebuser -p --default-character-set=utf8 ezine < dump.sql
Now in your web app, you should correctly see autotööstus
From now on, the "native currency" of your database is utf8. When dumping the database, you have to be careful, make sure the exported file is still latin1 encoded.
Otherwise you'll end up with the over-encoded data, such as autotööstus.
mysqldump -uwebuser -p --default-char-set=latin1 ezine > dump.sql
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
Upon creating a database from the mysql command line with character sets, I get the following error: Unknown character set: utf8_unicode_ci. But, when I run the same SQL in phpmyadmin, it works fine with no errors and I cant figure out why?
The SQL:
CREATE DATABASE sx CHARACTER SET =utf8 COLLATE = utf8_unicode_ci;
mysql command line:
mysql -u root -ppassword -h localhost --default-character-set=utf8
Since you're getting the error Unknown character set: 'utf8_unicode_ci', you must be specifying utf8_unicode_ci (which is a collation) as the character set. Check your command and try again.
Change your DB_CHARSET utf8_general_ci to utf8
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.