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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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MySQl - incorrect string value on version from latin1 to utf8

So we originally had latin1 for our MySQL database (a long long time ago) and we are trying to convert to UTF8 before a more global outreach, but I'm having issues with the transition. Here's my MySQL: /* First set as latin1 */ SET NAMES…
Aram Papazian
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Searching for emojis in MySQL

I have a string that looks like this: Now, when my app shoves this string into its utf8 mysql database column, it looks like this in the MySQL CLI: If I select convert(mystring using utfmb4) it still looks like this. And if I turn it to hex using…
John
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Incorrect string value when inserting into mysql using php

I am receiving an "Incorrect string value" error when inserting into a MySql 5.6 DB using php (I have tried multiple versions of PHP from multiple servers, including v5.5 - all Windows machines). I have scoured the forums and tried everything, but…
Dan
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How can I insert into a MySQL table with the utf8mb4 character set?

How can I insert the character into my table? I also followed the advice in the article How to support full Unicode in MySQL databases by Mathias Bynens. mysql.ini: # Other default tuning values # MySQL Server Instance Configuration File #…
traBolics
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Update mysql from v5.1 to v5.6, can not connect mysql

I would like to update mysql from v5.1 to v5.6, so that we can use utfmb4 instead of utf8. After I updated my mysql, I changed the hibernate conf file connection url to jdbc:mysql://xxx.xxx.xxx.xxx:3306/app?characterEncoding=utf8mb4, i.e. utf8 to…
user2053760
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How to create utf8mb4 database using python+MySQLdb, mysql commandline already shows utf8mb4, but database is still utf8

I use Mysql5.6, Mysqldb_1.2.4, python_2.7.3 with win7 system. As the title says, I've modified Mysql's configure file my.ini by changing charset. After restarting mysql service, I use Mysql commandline: When I create a database in mysql workbench,…
user3600655
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What is the Simple and Efficient way to handle single quotes and double quotes insertion issue using php and MySql

I am mostly working with Php 5.4+ and MySql 5.5+ versions. I am using Codeigniter for all the projects. The problem i am facing is Sometimes(on some production servers) when ever a POST variable contains ' or " quotes, a Database error occurs.…
Ramaraju.d
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Is utf8mb4 supported on PHP 5.2.7

I have two servers running the following Versions of PHP and MySQL respectively Server 1: PHP version 5.2.7 MySQL: 5.5.36 Server 2: PHP version 5.4.23 MySQL: 5.5.36 As the MySQL version is updated, MySQL can handle utf8mb4_general_ci So in case of…
Ramaraju.d
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Which data type and collation for full UTF8 support in MySQL

I'm going to store data (mostly Wikipedia page titles) in a table, that can contain characters for which full UTF8 is needed. The schema I'm using is CREATE TABLE `en_brands` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(191)…
rabudde
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"Incorrect string value:" Java & MySQL

I am working with some Twitter text and when trying to write to a database I get the following error: Incorrect string value: '\xF0\x9F\x98\x96\xF0\x9F...' I read that that the text field should be set to uft8mb4 and I've done that, but still…
user1624577
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MySQL fails update a record with utf8mb4 string on Jetty

I'm running java over jetty, on an EC2 linux instance, using MySQL DB. The column is a VARCHAR, set to accept utf8mb4 encoding. After playing around with stuff, I've found out that it works when I run this code through gradle jettyRunWar, or even…
Kof
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Wordpress site: Random Character Coding error

I have a Wordpress site which randomly shows an error like: WordPress database error: [Incorrect string value: '\xF0\x9F\x92\x97\xF0\x9F...' for column 'option_value' at row 1] UPDATE `wp_options` SET `option_value` = 'a:95:{ This is a…
IrfanClemson
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Prints results including HTML Entity code instead of value itself

When I edit a data value, the output it prints includes the HTML entity along with the value itself. Example: Expected text: Absence & Obtained text:

Ausence &

I'm using Code Igniter 4 and MySQL for the database, and CKEditor text…
Javier Mera
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mySQL optimizations - Compact type type, InnoDB and UTF8MB4

I'm using a community forum site software package. In the dashboard the automated software reports some suggestions to make the site more efficient. The recommendations are/were to: Use dynamic table type not Compact. Use InnoDB engine on tables…
jdw
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General error: 3988 Conversion from collation utf8_unicode_ci into utf8mb4_0900_ai_ci impossible for parameter

I'm trying to save a string containing html of an email in a text type column. but i'm getting this error. I failed finding where's the incompatible caractere. There is any sanitizing method that i can use to convert all utf8_unicode_ci into…
André Walker
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