when I create a new table, it always is 'latin-swedish-ci' by default. my goal is that this table can store utf-8 text. I tried this way, give me error .
cd C:\mysql-5.5.14-winx64\bin
mysqld --standalone --console --default-storage-engine=InnoDB --default-character-set=utf8
[ERROR] mysqld: unknown variable 'default-character-set=utf8'
Your Database probably has the default charset on latin1 and default collation set to latin1-swedish-ci and so altering the table should help
http://dev.mysql.com/doc/refman/5.1/en/alter-database.html
ALTER DATABASE `MyDatabaseName`
CHARACTER SET utf8
COLLATE utf8_general_ci;
You can always specify column encodings/collations within CREATE TABLE statement. This has additional benefit of making your data structure more portable in case you ever need to move it to another server.
Related
While upgrading mysql from 5.6 -> 5.7 -> 8.0.23 in step 5.7 -> 8.0.23 I got a recommendation:
The following objects use the utf8mb3 character set. It is recommended to convert them to use utf8mb4 instead, for improved Unicode support.
More Information:
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf8mb3.html
...
mysql - schema's default character set: utf8
...
So, Is it enough to change the charset of the schema mysql to utf8mb4? Or at first, does it need to convert all the tables of this schema to utf8mb4?
The way to change a schema's default characters set:
ALTER SCHEMA mysql DEFAULT CHARACTER SET utf8mb4;
However, I don't know if your admin user on RDS has privileges to do that on the mysql system schema. It's possible that you don't, because RDS limits the privileges of your admin user.
I getting this error
django.db.utils.OperationalError: (1366, "Incorrect string value:
'\xF0\x9F\x99\x8F \xF0...' for column 'html_code' at row 1")
I created database using this command
CREATE DATABASE sample CHARACTER SET utf8;
I have these settings in mysql
vim /etc/mysql/conf.d/mysql.cnf
[mysql]
default-character-set=utf8mb4
vim /etc/mysql/mysql.conf.d/mysqld.cnf
[mysqld]
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci
I even used this command as well
ALTER TABLE sample_randy CONVERT TO CHARACTER SET utf8
The problem is it worked first time i use those command and after sometime it again stop working with same error.
I am not sure which thing is resetting the options
If i delete the database, create again and run script again then it work again. if i rerun again then it get same error
To get the character for 'PERSON WITH FOLDED HANDS', you needed utf8mb4 (not just utf8) everywhere. Do
ALTER TABLE sample_randy CONVERT TO CHARACTER SET utf8mb4
I am a beginner when it comes to databases, so please bear with me. I'm trying to set up a database and import some tables from a file tables.sql. Some of the Columns in tables.sql have Swedish letters in them (Ä, Ö) and the problem is that I get the following:
Ä = ä
Ö = ö
First I begin to check the character set of the server:
mysql> show variables like 'character_set_server';
The server is configured to character set 'Latin-1'. I must mention that I have no control over the server more than to create a database. So I guess I have to create my database and specify the character set of the database.
This is how I proceed:
mysql> create database db;
mysql> alter database db character set utf8 collate utf8_swedish_ci;
I double checked that my tables.sql have charset utf-8 by executing:
file -bi allsok_tables.sql
And then I load it into the database by:
$ mysql -u [username] -h [hostname] -P [port] -p db < tables.sql
when I create my tables in tables.sql I use engine = InnoDB (don't know if this is relevant or not). However if I now select everything from the table TableTest
mysql> select * from TableTest
I get these weird characters instead of the Swedish characters. I appreciate any help right now.
Thanks in advance!
UPDATE:
If I insert a value manually into a table it works e.g.
mysql> insert into TableTest values ('åäö');
So the problem seems to be with the .sql-file. Right?
$ mysql ... --default-character-set=utf8 < tables.sql
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
MySQL needs to know what encoding the data you're sending it is in. To do this, you need to set the connection encoding. When connecting to MySQL from a client, you usually run a SET NAMES query or use an equivalent call on your API of choice to do so. On the command line, the --default-character-set option does this. It needs to be set to whatever encoding your file is in.
The title saiz it all, right? :)
Details:
I'm looking for a SQL query I can use in phpmyadmin. Need to Change all my fields in one database from latin1_swedish_ci to utf8_general_ci
The main problem in your case is when you change the collation/character set from the table the data inside the table are latin1 and the table is utf8 until then.
What you can try is to make a dump of the table with the old character set.
mysqldump -uuser -p --default-character-set=latin1 dbname > dump.sql
and then import the database with the new character set like this:
mysql -uuser -p --default-character-set=utf8 dbname_test < dump.sql
To test i would import the dump to a test database. If the characters are not correct after the import. Use an Editor like pspad or notepad++ and change the file encoding to UTF-8. After this you can try to import another time.
The most times encodings are very annoying but i hope you can solve it.
When you only have phpmyadmin use the "Export" function and make the same with phpmyadmin. Export in the actual encoding and try to import in the new encoding but then you have to change the file encoding i think.
Change the default collation to utf8_general_ci in MySql:
Open the my.ini file. (C:\xampp\mysql\bin\my.ini)
Find the text [mysqld] and add the below lines.
[mysqld]
character-set-server = utf8
collation-server = utf8_general_ci
The above two lines will select a character set and collation at server startup. These settings apply server-wide and apply as the defaults for databases created by any application, and for tables created in those databases.
How can I change my MySQL collation in WAMPSERVER from latin1_swedish_ci to UTF-8 because I think my HTML special characters are getting all messed up
put in your C:\wamp\bin\mysql\mysql5.5.24\my.ini:
character-set-server=utf8
collation-server=utf8_general_ci
You could use
set names 'utf8'
each time you open a connection.
Or add the following line to your my.ini file and restart your server.
default-character-set=utf8
If you've already got tables set up you'll need to alter them too you can alter them with:
ALTER TABLE tablename COLLATE utf8_general_ci
etc or pop into phpmyadmin and do it there. Remember if you alter database collation it'll only affect new tables created after that not pre-existing ones in that database already, so you will need to alter them also.