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Questions tagged [utf8mb4]

Unlike its `utf8` encoding, MySQL’s `utf8mb4` encoding offers full Unicode support (including four-byte UTF-8-encoded symbols).

Unlike its utf8 encoding, MySQL’s utf8mb4 encoding offers full Unicode support (including four-byte UTF-8-encoded symbols).

The utf8mb4 character set is useful because nowadays we need support for storing not only language characters but also symbols, newly introduced emojis, and so on.

utf8mb4 has been available since MySQL 5.5.3 (released March 2010).

A nice read on How to support full Unicode in MySQL databases by Mathias Bynens can also shed some light on this.

More information about the utf8mb4 character set may be found on the official MySQL Documentation.

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Incorrect string value: '\\xA0Consu...' for column even though column has utf8mb4 encoding

I am running python script to insert record in table. I am reading data from spreadsheet that contain cell with special characters. In my script I am running following commands before executing below commands: SET NAMES utf8mb4; SET CHARACTER SET…
Amit S
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MariaDB incorrect string value error with utf8mb4 encoding

I changed database and table character set as utf8mb4 and collation utf8bm4_turkish_ci on MariaDB for emoji support. While i can easily insert and select operations by connecting to the server through the terminal but i am getting "Incorrect String…
user8668708
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laravel 3 utf8mb4 support

We require emoji support for a legacy Laravel 3 system using MySQL 5.5 - we believe have utf8mb4 support for the table since it stores an emoji character without an error after updating the table and we can see the value in MySQL Workbench. We,…
Ruegen
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Mysql: When should I declare Column of type CHAR(String) to use UTF8 or Latin1?

Since Mysql>=8.0 has supported collation in UTF8MB4. But If the Column of type CHAR is an alphanumeric string, would it be better to custom collation in UTF8 or latin1 ? I use Flask-Sqlalchemy, and my project sets SQLALCHEMY_DATABASE_URI =…
NicoNing
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Virtuemart Media files lose all meta information when downloading

My media files lose all meta information when downloading. I have a website with downloadable, virtual products. It affects here Android app files, apk's. If I want to download and install the files, I get the following error. There was a problem…
Michael
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Force jdbc to use utf8mb3

My Sql-Database uses utf8_bin, which is limited to 3-Byte-Characters. Im using a pre "5.1.46" Mysql connector. On this site: https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-charsets.html, it is stated that using the…
BärenHund1
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How to change CHARACTER_SET_NAME and COLLATION_NAME for a certain column?

I have a column with utf8 CHARACTER_SET_NAME and COLLATION_NAME utf8_general_ci. I need to change the column to use utf8mb4 and utf8mb_unicode_ci respectively. I am using mysql 5.6
MIA
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Minimal setup for MariaDB to handle Emojis

I followed https://stackoverflow.com/a/35189650/4534 but still I get Error 1366: Incorrect string value, when posting an emoji into "name": INSERT INTO `users` (`name`) VALUES ('Foo bar '); SQL setup is: SET NAMES utf8mb4; CREATE DATABASE…
hendry
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Performance cost of proper utf-8 encoding in PHP

I've failed to find the definitely best practices when it comes to handling incoming data. Some other threads had useful information but still I have a lot of unanswered question. All I know for sure is UTF-8 is the one and only modern standard. My…
user9203881
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MySQL Workbench system variables discrepancy

MySQL Workbench: v8.0.13 MySQL: v5.7 (installed by brew on macOS 10.14.13) Server variables tab, everything looks as expected, the options file (my.cnf) has the same settings. Actually this is how it behaves. eg. character_set_results switches back…
Marcell Kiss
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Not all character sets and collation sets change to utf8mb4(.unicode.ci)

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…
Marianne
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Strange characters when saving emoji in the database. Is this normal?

Emoji's are saved in my database (phpmyadmin) like 😋😉😎😀😃 (input via form). It seems weird characters to me or is this normal? They are displayed on my website in the right way. So, there's not a real problem, but I want to make sure…
Marianne
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MySQL db in utf8_general_ci, connection in utf8mb4_general_ci, how to deal with "Illegal mix of collations"?

I have a MySQL database that is all in utf8_general_ci charset. The only exception is the field subject in the newsletter table that has charset utf8mb4_general_ci. This is done to allow storing emoji utf8 chars. When via a php script I establish a…
nulll
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steps to convert single databse to utf8mb4 in mysql

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…
user2623775
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