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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 find all variations (accented, etc) of a searched string in MySQL table?

I have a big MySQL, InnoDB table which holds data in utf8mb4_unicode_ci. I have records from almost every languages those are based on latin alphabet. I am easily able to search words with accented characters and find results with different…
frankish
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Will PHP's utf8_encode() remove emojis?

I have already converted my mysql database/table/columns to utf8mb4 using Mathia's guide: https://mathiasbynens.be/notes/mysql-utf8mb4 I'm scraping instagram results specifically, and using utf8_concode() before persisting. Does this PHP method…
Dylan Pierce
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mysql change default character set latin1 to utf8

I have PHP 5.5.9 and MySQL 5.5.43 Innodb. This is in Kubuntu LTS /etc/mysql/my.cnf printf("Current character set: %s\n", mysqli_character_set_name($conn)); Current character set: latin1 I've tried default-character-set = utf8 first but then my…
user1081168
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'' Not a valid unicode character, but in the unicode character set?

Short story: I can't get an entity like '𠂉' to store in a MySQL database, either by using a text field in a Ruby on Rails app (with default UTF-8 encoding) or by inputting it directly with a MySQL GUI app. As far as I can tell, all Chinese…
Steve Cotner
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Relationship between database's charset, table's charset and columns' charset? Is diffrent charsets lead to any performance issues?

I am developing a website by using ASP.net and my DB is MYSQL. In there users can submit articles. This site goes internationally so I dont want to restrict the language only to English. So I decided few things. Please guide me If I made the wrong…
Prageeth Liyanage
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Twitter Text from Java to MySQL: utf8mb4 SQL Error "reportcharsetnr("

For context: Trying to load Twitter Text into a MySQL DB. Some Tweets have utf8mb4 characters which throws a java.SQL.Exception. I solved this and thanks to this post. Now, the Java code runs with no errors; however, I can't perform a simple select…
sully_r
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Is it ok to utf8_decode entire SQL statement to avoid utf-8 / utf8mb4 issues?

I have a site that accepts form-based inputs from users and stores into a mysql(i) database. 99% of users are from the USA. If a user is on a mobile device and decides it would be fun to use an emoji in one of the form fields, the resulting SQL…
C C
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Php + Mysql (UTF-8 ) some characters are still bug

Well i got a php script that takes nicknames from a the Steam web-api and insert them into a mysql db. Many of them got rare russian and greek characters. I set php to utf-8 in the php.ini and in all the php files with…
holyknight
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MySQL 5.5 Connector/J CharacterSet Encoding (utf8mb4) Issue

I am trying to properly store utf8mb4 strings into MySQL 5.5.30. We are using ConnectorJ 5.1.18. According to the documentation ConnectorJ should autodetect the character encoding based upon the character_set_server variable... However, as best as…
cadams500
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How to get rid all strange characters that can't get into mysql from a string in vb.net

I have a problem with strange character. In mysql this character cause error Incorrect string value: '\xF0\x9F\x92\x80' Samples of these characters are from…
user4951
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execute failed: Incorrect string value: '\xE4rvine...' with mariadb and perl DBD

More than three years ago I posted a similar question related to not being able to insert data into a table because of what I believe is an incorrect character set, and I'm having the same problem with the same script with different data today. The…
Alex Regan
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UTF8-mb4 in Kafka

I have a UTF8-mb4 char in mongo and have a java extractor which extracts data from mongo and put into kafka. When the data goes to Kafka the special char has been replaced with \u... Sample text:- "\uDBFF\uDC15COMPANY" I have another Java program…
user1578872
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Incorrect string value \xF0\x9F\x98\x8A\xF0\x9F... for column 'desc'

I'm having this error and still don't know why. I predict it's happen because some users try to use an emoji. But I try a lot of emoji and it all work. I use Mysql 5.7 I already set column to COLLATE utf8mb4_unicode_ci and table to CHARSET=utf8mb4…
Dương Việt Hoàng
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Problems with inserting emojis into database using mysql.connector in python

As described in the title, I have a problem with inserting emojis into a MariaDB database using the mysql.connector module in python. When I try to insert the data containing emojis into the database with python, all emojis are simply replaced by…
JonaWe
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MySql varchar length for emojis on Sequel Pro

I'm using MySql version 5.6.46 on Linux. I have a column name varchar(50) COLLATE utf8mb4_bin and ENGINE=InnoDB DEFAULT CHARSET=utf8mb4. When I tried to insert some data into the table. I find that, for a (1 byte in utf8), it can store 50…
matrix
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