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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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UTF8mb4 unicode breaking MariaDB JDBC driver

I have some product names that include unicode characters ⚠️PLEASE READ! WORKING KODAK DC215 ZOOM 1.0MP DIGITAL CAMERA - UK SELLER A query in heidiSQL shows it fine I setup MariaDB new this morning having moved from MySQL, but when records are…
Daniel Cook
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Mysql utf8mb4 connection string (Node.js, serverless-mysql package)

I've changed my Mysql defaults to utf8mb4, however emojis are still getting refused by mysql. Error: ER_TRUNCATED_WRONG_VALUE_FOR_FIELD: Incorrect string value: '\xF0\x9F\x92\xA9
lpetrucci
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Migrating from using auto increment id to uuid with sequelize

All right, I'm trying out some different ORM's, currently working on Sequelize. I've defined two models, asset and asset_category, where each asset has a foreign key relation to an asset_category. All good! Now, I want to change from using auto…
Koekenbakker28
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create PDF with emoji utf-8 character using php

I am trying to create pdf with text including emoji character. using PHP > 7 and mysql 'char_set' => utf8mb4 'dbcollat' => utf8mb4_unicode_ci I have create PDF from html, is echo html text all emoji shown good. but if its create pdf its not…
user12410400
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Case insensitive SQL queries with utf8mb4 (Laravel)

I'm trying to make a account system that only allows unique usernames to be created. SQL queries used to be case insensitive, but after changing the charset to utf8mb4 it's case sensitive meaning people can use duplicate usernames. (I changed to…
d0x
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MYSQL Workbench "Incorrect string value" error while migrating database from MS SQL-Server

I am trying to migrate a SQL-Server database to MYSQL. I am getting the error "Incorrect string value: '\xF0\x9F\x98\x8B\xF0\x9F...'" I am using the batch file created by MySQL Workbench 8.0 CE to see the error because the UI crashes and…
David Young
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Inserting 4-byte unicode characters into MySQL/MariaDB

When attempting to insert (for example, which is a 4-byte unicode char), both MySQL (5.7) and MariaDB (10.2/10.3/10.4) give the same error: Incorrect string value: '\xF0\x9F\x92\xA9' The statement: mysql> insert into bob (test) values (''); Here's…
Danny Kopping
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Working with SET NAMES utf8mb4 with utf8 tables

In a large system based on Mysql 5.5.57 Php 5.6.37 setup Currently the whole system is working in utf8 including SET NAMES utf8 at the beginning of each db connection. I need to support emojis in one of the tables so I need to switch it to utf8mb4.…
Nir
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Drupal 7 utf8mb4 support: "Please convert tables" warning... after converting tables

The full error I am seeing in Drush is: Please convert all database tables to utf8mb4 prior to enabling it in settings.php. See the documentation on adding [warning] 4 byte UTF-8 support for more information. (Currently using Database 4 byte…
Bytech
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MySQL VARCHAR or TEXT

I have already read myself here and there, but have not found an answer that answers my question... I now have a database utf8mb4 and want to store a string in a column (length 200-250 characters). Is VARCHAR (200 - 250) now OK for utf8mb4 or do I…
Norman Huth
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LOAD DATA LOCAL INFILE - Invalid utf8mb4 character string

I'm attempting to get this csv of Russian troll tweets into a mysql database. I'm trying to use LOAD DATA LOCAL INFILE like this: LOAD DATA LOCAL INFILE '/path/to/csv/data.csv' INTO TABLE mytable CHARACTER SET utf8mb4 FIELDS TERMINATED BY…
georgedum
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Remove emojis / unicode chars

My website and database is set to utf-8 and utf8mb4. On textareas it's perfectly fine when users put utf-8 symbols/emojis. But on certain input fields (name, address etc.) I want to remove the possibility of those "funny symbols", and only deal with…
mowgli
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utf8mb4_unicode_ci OR utf8mb4_danish_ci

Both utf8mb4_unicode_ci and utf8mb4_danish_ci (mysql/mariadb database) seems to work fine on my danish website. When I test for characters/symbols/emojis, they both seem to display the same result. Danish letters like æ/ø/å works in both. Why would…
mowgli
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MYSQL 5.6 & 8.0 utf8mb4 : PHP 5.6 utf8

I have develop a web site using MySQL 8.0 (uft8mb4) and PHP 5.6 (UTF-8) Where no issues where raised for the INSERT or SELECT data in the DB. ex. the word "sévère" would appear as is in both parties. The problem appeared when I transfered the web…
David
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How does InnoDB store character columns?

This Question addresses only how 'short' CHAR and VARCHAR columns are stored in an InnoDB table. Does a CHAR(10) column occupy exactly 10 bytes? What happens with trailing blanks? What about character sets that need more than 1 byte per…
Rick James
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