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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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How to get mysql character support for utf8mb4 when migrating?

I'm trying to migrate a local build of my Wordpress website to a staging environment. I'm using 'wp migrate db' to do it. This involves uploading a database via phpmyadmin. When doing so I get an error saying: 1115 - Unknown character set:…
rjtkoh
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How to insert emoticons into MySQL using CodeIgniter

How to insert unicode characters into MySQL and retrieve them using CodeIgniter? Is there any settings to be done. This is the query when I print it. INSERT INTO `reviews` (`description`) VALUES ('😀') But, it is saving as ????. Here is what I…
Satish Ravipati
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Detecting a utf8mb4 charset requirement

We have a mySQL DB that only supports utf8. But we are getting some data feeds that require utf8mb4 for storing in mySQL. How can we detect (in Java) if a string will require utf8mb4 charset?
Saqib Ali
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Does MySQL UTF8 collation fit japanese and korean characters?

I've set all collation and characters sets to UTF8 in PHP and MySQL. There is no problem. But as seen on http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html, standard utf8_general_ci collation uses three bytes for storing characters.…
rabudde
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utf8mb4 characters not surviving "LOAD DATA INFILE"

I have a csv file containing some characters that lie outside Unicode BMP, for example the character . They are SMP characters, so they need to be stored in utf8mb4 charset and utf8mb4_general_ci collation in MySQL instead of utf8 charset and…
Zhuoyun Wei
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convert utf8mb4 characters to utf8 in php

is there a way to convert utf8mb4 characters to utf8 to store in a utf8 mysql database? and then when we get it from database, restore it to utf8mb4. goal is storing phone smiley in a utf8 database without having to change database encoding. for…
exim
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Getting "OperationalError: 1366" from python script - MySQL 5.6 . MySQLdb 1.2.3

Environment: MySQL-python-1.2.3.win-amd64-py2.7 python-2.7.amd64 mysql-installer-community-5.6.12.2 Windows Server 2008 R2 Datacenter I am getting Operational Error 1366 when inserting data with a python script. I need to run the EPFImporter which…
VolkaRacho
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Changing MySQL charset to UTF8 on linux so it will work with JDBC

My application can be deployed on Win\Linux, and uses MySQL 5.5, and it may store data in different languages. I changed my MySQL server to have the following charset variables set to UTF8: character_set_client…
danieln
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Django with MySQL and UTF-8

Possible Duplicate: How to filter (or replace) unicode characters that would take more than 3 bytes in UTF-8? Background: I am using Django with MySQL 5.1 and I am having trouble with 4-byte UTF-8 characters causing fatal errors throughout my web…
Trey Hunner
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Error in running Java Code code ( Unknown character set: 'utf8mb4' )?

Im trying to learn Java programming and how to link it with Database MySQL ... Here's the Code : import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; public class main { …
HitchCoder
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JPABuddy Liquibase Init generation of MySQL uses utf8mb3 for nvarchar?

I uses JPABuddy to generate an init Liquibase db for MySQL 8.0.33 DB. I notices that for nvarchar datatype it uses character set utf8mb3, collation utf8mb3_general_ci which are deprecated, instead MySQL recommend to use utf8mb4. This is the…
vunhatchuong
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MySQL: Illegal mix of collations: both same collation

I see a number of questions on SO regarding something similar, but none of them addresses this particular detail. I created a database using something like this: CREATE DATABASE db CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_520_ci; I create a…
Manngo
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Using like with mariadb and chinese characters

I come back with utf8mb4 character issues. I'm using mariadb Server version: 10.3.37-MariaDB-0ubuntu0.20.04.1 Ubuntu 20.04 on a local machine with Linux Mint 20.3. Here is a test table: CREATE TABLE chartable ( k1 VARCHAR(5) ) ENGINE=MyISAM…
Usaginomimi
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How to store emojis in a MySQL table? Tried everything

I have a CSV file containing tweets with emojis (eg. "Cool! ") and I need to import them into a MySQL table in such a way they will be saved/displayed correctly... What do I have to set up and how for a correct import (I mean collation, etc.)? More…
user3607534
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PHP json encode and Node.js decode utf8mb4_unicode_ci strings

On my server, the database is encode in utf8mb4_unicode_ci I'm writing an API to serve data in JSON. The PHP function json_encode only accepts utf8. I'm not able to build the full chain: strings encoded in utf8mb4_unicode_ci => utf8 => json => API…
Fifi
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