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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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Convert or store non-ascii characters properly in a MySQL Database

My Question How can I store or convert emojis and french accents and other special non-ascii characters in a MySQL database? The Problem Within the wp_posts table of my MySQL database called local, some characters in the content of the post_content…
TerminalVelocity
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Words of Urdu Language are not displaying properly after changing hosting server

I was previously using Namecheap hosting servers to run my website (https://www.bilawalcoachingcenter.com) and now shifted on Site Ground. The problem is that the words of the Urdu language, that were stored in the database, are not displaying…
Mohsin Ahmed
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How to import amharic data from to mysql database?

I found this from stack overflow ALTER DATABASE ethioVision CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci; but still cannot add file
amanuel zerfu
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Problem changing mysql database encoding to utf8mb4 in Gcloud

I have a mysql database in Gcloud using utf8 enconding and I want to change it to utf8mb4 to support storing emoticons. I did this using my local version of mysql in my laptop and it worked fine using: ALTER TABLE table_name CONVERT TO CHARACTER SET…
lisi1986
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What collation can be used in MySQL 5.5 for sorting Japanese characters?

I have a database with utf8mb4 character set and Ive been trying to select records where data are in Japanese characters but the utf8mb4_general_ci collation can't seem to order the result correctly. for example , the below characters are showing in…
Fancy
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Laravel Mysql error inserting £ sign (Incorrect string value: '\xA327.20...')

I am using laravel to import some .txt files into the database. The contents of the file would be: Amount due is £27.20 I am able to obtain the contents of the file using $record[contents] = Storage::disk('dropbox')->get('/file.txt') I then insert…
user3163357
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MySQL utf8 multibyte (utf8mb4) insert duplicate entry problem

I have two words ('বাঁধা' and 'বাধা') to be inserted in a mysql (8.0.12 - MySQL Community Server - GPL) table. The word 'বাঁধা' is inserted correctly. But when inserting 'বাধা', mysql produces an error: INSERT INTO lc6_words(jp_word, jp_fcharascii)…
sariDon
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retreive emojii from mysql database

I'm trying to select from Mysql a utf8 string that contains an emojii and instead of emojii I'm getting question mark import MySQLdb db=MySQLdb.connect(host='host', user='user', passwd='password', db='db', charset='utf8mb4',…
Roman Azarov
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Find collatie utf8mb4 with _ci_as in my db

I want to use utf8mb4, CI (case insensitive) and AS (accent-sensitive). Which can I choose? Specially for names in different languages, so accents are important. I cannot find an _as option. And _bin is CS, and I need CI. Help!? My only options at…
Helena
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SELECT Hüsby returns the 'wrong' output Husby

In the same database, I run the query and get one correct and one incorrect result. correct SELECT Ort FROM `stammdaten` WHERE `Ort` = 'Husby'; Ort Husby Husby wrong SELECT Ort FROM stammdaten WHERE Ort =…
Thomas Kujawa
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MySQL 5.7 Not setting as utf8mb4 correctly

I'm trying to import data into my table. The source is CSV in UTF8 encoding into my MySQL UTF8MB4 table. Originally i thought the encoding was wrong for the language which is Russian (for this failed row) but it turns out its a slash "/" in the…
user15793580
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How can we save emojis in SQL database to preserve their uniqueness for equality comparisons?

We have an issue when we save emojis to our database. We have altered our table column to a character set and collation that should save enough bytes to distinguish between emojis. This was our query to modify the table column: ALTER TABLE TableName…
Tom Francis
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Why do my Mariadb characters get mangled on the return leg of my query?

I have non-ASCII characters in keys in my database that are supposed to be UTF-8 (utf8mb4) encoded. And they sort of are, but not entirely: From Java via JDBC (mysql:mysql-connector-java:8.0.21), a: SELECT * FROM whatever WHERE…
Johannes Ernst
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executemany method in mysql.connector with utf8mb4 charset not working (python)

A few days ago I posted a problem regarding inserting emojis in a MariaDB database using the mysql.connector module in Python. Now after further investigations I was able to narrow the problem down. After changing the charset and collation of the…
JonaWe
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How to overcome performance issue when converting utf8mb4 to latin1?

By my ignorance, I have altered a few tables without specifying collation. That caused changed columns, which used to be latin1 characters, to be changed to utf8mb4. This brought HUGE performance loss running joins. And when I say HUGE I mean…
Grzegorz
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