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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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What is the difference between utf8mb4 and utf8 charsets in MySQL?

What is the difference between utf8mb4 and utf8 charsets in MySQL? I already know about ASCII, UTF-8, UTF-16 and UTF-32 encodings; but I'm curious to know whats the difference of utf8mb4 group of encodings with other encoding types defined in MySQL…
Mojtaba Rezaeian
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"Incorrect string value" when trying to insert UTF-8 into MySQL via JDBC?

This is how my connection is set: Connection conn = DriverManager.getConnection(url + dbName + "?useUnicode=true&characterEncoding=utf-8", userName, password); And I'm getting the following error when tyring to add a row to a table: Incorrect string…
Lior
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MySQL utf8mb4, Errors when saving Emojis

I try to save names from users from a service in my MySQL database. Those names can contain emojis like (just for examples) After searching a little bit I found this stackoverflow linking to this tutorial. I followed the steps and it looks like…
Loki
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ERROR 1115 (42000): Unknown character set: 'utf8mb4'

I have a MySQL dump, which I tried to restore with: mysql -u"username" -p"password" --host="127.0.0.1" mysql_db < mysql_db However, this threw an error: ERROR 1115 (42000) at line 3231: Unknown character set: 'utf8mb4' This is lines 3231-3233:…
saravanakumar
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How to insert utf-8 mb4 character(emoji in ios5) in mysql?

I am using mysql 5.5.10, and its character_sets are | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | |…
plenty
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MySQL VARCHAR(255) UTF8 is too long for key, but max length is 1000 bytes

I know there have been plenty of questions about this, but I think my math is right. MySQL reserves 3 bytes per UTF8 character. MyISAM allows keys of length 1000 bytes. My UTF8 VARCHAR(255) should be 255 * 3 = 765 bytes Unless UNQUE requires an…
David Kanarek
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MySQL throws Incorrect string value error

I'm trying to store the following tweet into a longtext column / utf8 charset / MySQL 5.5. database with MyISAM storage on. We also tried utf8mb4, utf16, utf32 charsets but are unable to get past this issue. tweet="@Dorable_Dimples: Okay enough of…
priya
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Utf8_general_ci or utf8mb4 or...?

utf16 or utf32? I'm trying to store content in a lot of languages. Some of the languages use double-wide fonts (for example, Japanese fonts are frequently twice as wide as English fonts). I'm not sure which kind of database I should be using. …
Wolfpack'08
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Using SQLAlchemy and pymysql, how can I set the connection to utilize utf8mb4?

I discovered (the hard way) that MySQL's UTF8 character set is only 3 bytes. A bit of research shows I can fix this by changing the tables to utilize the utf8mb4 collation and get the full 4 bytes UTF should be. I've done so. My database, tables and…
Andy
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Emoji are not inserting in database node js mysql

Hello I am here to discus one thing. I am building up a web service that makes a goal for inserting emoji data into database field. I am working with Node JS + Mysql. I set charset to UTF-8 or utf8mb4 but this is not solving my problem. some emoji…
iam
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Using utf8mb4 in MySQL

In order to use 4-byte utf8mb4 in MySQL (5.6.11), I have set the following variables in the my.ini file (my.cnf is not found). This file is located in a hidden folder named Application Data (C:\Documents and Settings\All Users\Application…
Tiny
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How to remove 4 byte utf-8 characters in Ruby?

Since MySQL's utf8 doesn't support 4 byte characters, I'm looking for a way to detect and eliminate any 4 byte utf8 characters from a string in Ruby. I understand that I can update my table to use utf8m4 but for a couple reasons that's not possible…
JZC
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Can php detect 4-byte encoded utf8 chars?

I am using a utf8 charset mysql tables in a mysql 5.1 server, which does not support utf8mb4 encoding in tables. When inserting 4-byte encoded utf8 characters like "","","","","","唧","". The table will popup error or skip the following texts. How…
Abby Chau Yu Hoi
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How can I search by emoji in MySQL using utf8mb4?

Please help me understand how multibyte characters like emoji's are handled in MySQL utf8mb4 fields. See below for a simple test SQL to illustrate the challenges. /* Clear Previous Test */ DROP TABLE IF EXISTS `emoji_test`; DROP TABLE IF EXISTS…
Ryan
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Can and/or should I declare meta charset utf8mb4

I'm planning on using utf8mb4 in my database. Now as I've learned I should always use UTF-8 in my
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