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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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MariaDB select wrong unicode character

INSERT INTO table_name (col_name) VALUES (''); SELECT * FROM table_name WHERE col_name = ''; I my opinion no row has to be returned from the second query, but is returned. The table is utf8mb4 with collation utf8mb4_unicode_ci. Is something…
user3396065
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Performance benefit of MySql Collation

Is there any grate performance benefit(s) for setting Collation for mysql database or let the database engine use the default Collation? Thanks.
Want2bExpert
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Openshift MySql Emoji support

I'm trying to support emoji on Openshift MySql cartridge. I've set the UTF8mb4 character set following a few guides, but it doesn't seem to work. When i try to INSERT an emoji in a VARCHAR field, it instead stores "????". Is this an Openshift…
MirkoM
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ODBC connector support for utf8mb4 in MYSQL

I have been stuck up in this scenario. My application is in C++ which connects to MySQL database 5.5.34 through MySQL odbc connector v5.2 Unicode Driver. My tables were using the character set and collation properties 'utf-8'. To insert…
D3XT3R
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Is it possible to migrate mysql tables from utf8 to utf8mb4 solely by modifying the dumped .sql file?

Suppose there are 2 mysql databases - src_db has utf8 encoding and has several existing tables, dst_db has utf8mb4 encoding and is newly created. Will the following steps succeed in migrating those utf8 tables in src_db to utf8mb4 tables in…
goodbyeera
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Change MySQL-Charset from utf8 to utf8mb4 with PHPMyAdmin

When I want to change MySQL-Charset from utf8 (utf8_general_ci) to utf8mb4 (utf8_unicode_ci) with PHPMyAdmin, it is sufficient when I do these things? Change database collation to "utf8_unicode_ci" Change tables collation to…
user1711384
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MySQL Table COLLATION utf8_turkish_ci To utf8_general_ci

I have 2 table and I want to do join those tables. But one table collation is utf8_turkish_ci another is utf8_general_ci. These tables are big (2.9GB / 550MB) So I don't want to use "COLLATION" keyword in query because it's decelerated to my…
Mesuti
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MySQL INSERT missing info after switch to utf8mb4

Im searching all over for an answer to this and still cant seem to find it Server : localhost MySQL Version : 5.6.17 I have set my db's tables to utf8mb4 to graduate to more character possibilities. When i insert certain hashed information into…
TGammage
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How to support emojis with flourish?

I am using flourishlib for a website. My client requested that we should be able to use emojis with mobile phones. In theory we should change the character-encoding from utf8 to utf8mb4 for the MySQL database. So far, so good, however, if we make…
Lajos Arpad
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Wordpress content appearing on front end but not content to edit in the admin

This is an answer to an issue I recently faced. Background I recently migrated my Wordpress site from my local machine to a server at siteground.com. I used the plugin duplicator to do the migration. Every time I tried the migration the website…
Celso
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Mysql JDBC Incorrect string value and "?" character encoding

I have 2 problem at the same time which i solve them but when i fix one of them the other problem raise again, one of them is character encoding when i insert some sentence, db shows Ş,İ,ş,ı characters as a "?" i solved this problem putting the…
C.T
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FPDF with iconv from utf8mb4

I have a string coming from MySql DB, encoded in utf8mb4. I am rendering a pdf with FPDF for PHP, and I tried to convert it with iconv: iconv('utf8mb4', 'cp1252',$myString); This fails telling me "Notice: iconv(): Wrong charset, conversion from…
Nillus
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how to get character's length which encoding with utf8mb4 in php and js

I use mysql which support utf8mb4 to store emoji, but in the php or js side, I can not get the correct length of them which is my function of textarea input maxlength. as so far I know, utf8mb4 is not support by php or web side. Does anybody know…
newbmiao
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getting length of utf8mb4 string with perl from MySql

i wrote a small perl function that takes a string and checks its length without the spaces. the basic code looks as follows: sub foo { use utf8; my @wordsArray = split(/ /, $_[0])); my $result = length(join('', @wordsArray)); return…
chikko
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Variant vagrant using wordmove to deploy and utf8mb4 problems

I try to use variant vagrant and wordmove to deploy my work. VVV Several attempts later, I understand I have a difference of mysql version between VVV - mysql 5.5 and my distant server - mysql 5.1. The problem is utf8mb4 When wordmove dump local…
dmassiani
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