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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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Query uft8mb4 case insensitive in mysql

I am used to doing a case-insensitive match in mysql on utf8 fields, such as: select * from connections where full_name like '%david%' However, it seems that utf8mb4 does not support case-insensitive searches. How would I do the same against that…
David542
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Symfony4 data from the database is not utf8 encoded

Why data from datebase is not utf8 encoded? utf8mb64_general_ci is set for every column, table and datebase itself. My doctrine.yaml is below: parameters: # Adds a fallback DATABASE_URL if the env var is not set. # This allows you to run…
zsDev
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UTF8MB4 in DB and File?

so I'm trying to import a huge .sql file into my DB with Ansible. I have configured MySQL to run set global default-character-set = utf8mb4 before the DB is created. I've confirmed the DB charset is set to utf8mb4 before importing the data below…
b0uncyfr0
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AWS Aurora MySQL 5.7.12 accent sensitive collation

A legacy SQLServer db column has the collation SQL_Latin1_General_CP1_CI_AS (Case Insensitive, Accent Sensitive). We need to migrate this column into an already created and actively used AWS Aurora MySQL instance. MySQL 8 has the collation…
fred
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Data is UTF-8, Ajax is returning some characters incorrectly

I have spent a lot of time searching the web and seeing a lot of similar answers, but cannot find anything that works for my situation. I spent some time converting my MySQL database to UTF-8 from latin1 (the default). I emptied the tables…
Ken Mayer
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How to transfer emoticons in AngularJs app

Framework AngularJs Database MySQL Backend Jboss Error My app has a for comments from user. AngularJs gets the comment and saves it to MySQL DB. The problem that I am facing is whenever I try to send any emoticons in the…
Abhinav Alok
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Utf8 issue with ° on mysql insert

i have a project that running on Laravel. My function get files ( UTF8 files ) in storage then parse/insert datas into mysql table ( Mysql is in utf8mb4_unicode_ci ) . I'm stucked because of this error on some files on insert : General error:…
Kévin Leval
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Mysql connection timeout with utf8mb4 upgrade

I have a Codeigniter web app hosted on AWS EC2 (PHP7 and PDO is used to connect to db) and database setup on AWS RDS Mysql. To get unicode support I recreated the database and all tables in utf8mb4 charset. Now my CI app give me a connection…
Upul Dissanayake
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Why does a utf8mb4 column reject 4-byte characters in MySQL 5.7.22?

I'm trying to save a string of all 4-byte characters to a MySQL utf8mb4 column. UPDATE `uga_libsteam`.`group_history` SET `source_name`='' WHERE `group_id`='103582791430024497' and`history_id`='1655'; The characters are as…
PatPeter
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MySQL database migration UTF-8 issues with PHP

I'm migrating my existent database into another server. To achieve that I've exported and imported the database using phpMyAdmin SQL queries. Everything works fine, except that some UTF-8 characters appear broken in the website. I fetch them using…
Kitra
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Why utf8mb4 on mysql DB, Table, column gives error on inserting special characters?

MySQL version is: mysql Ver 14.14 Distrib 5.6.40, for Linux (x86_64) using EditLine wrapper I have set utf8mb4 on database, table, column by using commands below: ALTER DATABASE my_db CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci; And mysql…
Alireza
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How to print actual unicode characters in python dict or list

Please consider the following code a = 'abc ™ def' print a di = {"k":a} print di When I print a variable, it will print the ™ symbol properly. But, when I print di, it will print the following {'k': 'abc \xe2\x84\xa2 def'} Why So ? Further If I…
Avtar Singh
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Adding collation to utf8mb4 charset - MySQL/MariaDB

If you want to add a custom collation in mysql/mariaDB, for utf-8 charsets you can modify .../charsets/Index.xml and extend the charset with the LDML-Syntax: ... …
K. Edelbert
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Squeryl utf8mb4 support

I'm using Squeryl to work with a MySQL database. The tables are in utf8mb4 encoding. Now I want to insert some utf8 (4 byte) strings into the db through Squeryl. How do I do that? I tried to set ?useUnicode=yes&characterEncoding=UTF-8 to my…
Minh Thai
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Why do some emojis only return the code? utf8mb4

I'm saving message post data in my database using the utf8mb4 charset. This works for the vast majority of emojis, saving and rendering them correctly, but there are some that only return the code. Like this one : Which is the following :…
spice
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