Case insensitive search in utf8 db (no replies)
I have a db with uft8 values in greek like: ΓΙΑΝΝΗΣ Γιάννης Γιαννης (it is the word John in greek) and I want to write a query to be able to find all these 3 instances. In other words, I have words in...
View ArticleAn in depth DBA's guide to migrating a MySQL database from the `utf8` to the...
https://saveriomiroddi.github.io/An-in-depth-dbas-guide-to-migrating-a-mysql-database-from-the-utf8-to-the-utf8mb4-charset/
View ArticleSummary of trailing spaces handling in MySQL, with version 8.0 upgrade...
https://saveriomiroddi.github.io/Summary-of-trailing-spaces-handling-in-MySQL-with-version-8.0-upgrade-considerations/
View ArticleMYSQL DB not showing uft8 on php page (2 replies)
Hello everyone, I created a database and a table. I created a php page. When I visit the php page, the foreign characters change to question marks. This is what I did to troubleshoot: 1- php page...
View ArticleMySQL 8.0: A Tale of UDFs with Character Sets (no replies)
MySQL 8.0: A Tale of UDFs with Character Sets https://mysqlserverteam.com/a-tale-of-udfs-with-character-sets/
View ArticleAdding custom french EBCDIC collation for unicode (no replies)
Hi everyone, I have a task to add custom EBCDIC collation with french symbols. This collation based on https://en.wikipedia.org/wiki/EBCDIC_1047 1) I've already tried to add custom collation to latin1...
View ArticleTicketSolve: Upgrading from MySQL 5.7 to 8.0 (Character Sets and Collations)...
Upgrade and UTF8: - https://saveriomiroddi.github.io/An-in-depth-dbas-guide-to-migrating-a-mysql-database-from-the-utf8-to-the-utf8mb4-charset/ -...
View ArticleUTF-8 Everywhere (no replies)
About the authors This manifesto was written by Pavel Radzivilovsky, Yakov Galka and Slava Novgorodov. It is a result of our experience and research of real-world Unicode issues and mistakes done by...
View ArticleConfig or Installation Issue (3 replies)
Data contained in a varchar type field, produces an error that avoid saving a record because de data contains characters (scape sequences) that prints Spanish language accents since the fields of any...
View ArticleChanging collation type slows down queries (no replies)
I don't understand the issue with this. I have some tables that come to me as latin1_swedish_ci i need to do case sensitive joins so i change all the tables involved in both databases to...
View ArticleAn in depth DBA's guide to migrating a MySQL database from the `utf8` to the...
https://saveriomiroddi.github.io/An-in-depth-dbas-guide-to-migrating-a-mysql-database-from-the-utf8-to-the-utf8mb4-charset/
View ArticleMySQL: Some Character Set Basics (no replies)
MySQL: Some Character Set Basics https://blog.koehntopp.info/2020/08/18/mysql-character-sets.html
View ArticleBlackhole engine and utf8 character set (1 reply)
I'm replicating a 5.5 DB to 5.6. The default storage engine on 5.5 is InnoDB, and on 5.6 is Blackhole. The character set system variables are all the same. Creating the tables, all work except one....
View ArticleUnable to query with Chinese character (2 replies)
Hello everyone, I'm new to MySQL so I was practicing with a MySQL tutorial There was a question in this tutorial requiring us to query a record using LIKE operator so I did it as: select Tname from...
View ArticleIssue with UTF-8 in MYSQL 5.7 (1 reply)
Hi everyone, Greetings. My name is Shanu. I am a developer in this company called Typeset (www.typeset.io). We use MySQL 5.7 internally in our company, and I am constantly running into UTF-8 troubles....
View Articlebehaviour of latin1 in mysql (no replies)
I have some confusion on latin1 behaviour As per my understanding latin1 supports 256 characters and use 1 byte per character. I created 2 tables with latin1 and utf8 charset I am using mysql 5.7 set...
View ArticleCase insensitive collation identical to Javascript (1 reply)
Can one please confirm or reject if - SELECT (a = b) with utf8mb4_0900_as_ci collation results always the same result as - (a.toLowerCase() == b.toLowerCase()) in JavaScript? a and b are both non-null...
View ArticleJapanese voiced and unvoiced characters (1 reply)
MySQL doesn't seem to differentiate Japanese Dakuon (voiced) characters and Seion (unvoiced) characters. For instance SELECT query won't differentiate "きず (kizu = wound in English)" and "きす" (kisu =...
View ArticleAccent sensitive sorting by slovak alphabet (no replies)
I have a problem with collation of sorting results. I would want to order results by slovak alphabet using utf8_slovak ci, but accent sensitive. Utf8_slovak_ci works, but isn't accent sensitive as i...
View ArticleMySQL: Character Sets, Unicode, and UCA compliant collations (no replies)
MySQL: Character Sets, Unicode, and UCA compliant collations - https://blogs.oracle.com/mysql/mysql%3a-character-sets%2c-unicode%2c-and-uca-compliant-collations
View ArticleUpdate latin1/utf8 to utf8mb4 (1 reply)
Hi Team, Planning to update my database's from latin1/utf8 to utf8mb4 character set. Please clarify below things. 1. Will there be any dataloss during this conversion? 2. I have column with...
View ArticleI can't insert arabic characters (1 reply)
I have to insert text in various languages and when I insert arabic it inserts this "????????" Help? Thank you
View ArticleMySQL 8.0: utf8mb4 (no replies)
https://twitter.com/isotopp/status/1481383731562795009 "Why the #### did MySQL not upgrade the utf8 charset to 4 bytes, but created utf8mb4 instead?" "Because indexes matter and they can be large, so...
View ArticleMySQL 8.0: Migrating to utf8mb4: Things to Consider (no replies)
https://www.percona.com/blog/migrating-to-utf8mb4-things-to-consider/
View ArticleThe number of attributes is larger than the number of attribute values...
Hi All, For the longest time I have been using Visual FoxPro with MySQL as my database backend. Also, I have been using SELECT COUNT(*) to get the total number of rows for any SELECT statement. But...
View Articleutf8mb4 introducer added to generated column expression (no replies)
Stock MySQL 8.0.31, Linux CREATE TABLE `test` ( `id` int NOT NULL AUTO_INCREMENT, `test_col` VARCHAR(45) GENERATED ALWAYS AS ("test value"), PRIMARY KEY (`id`) ) ENGINE=InnoDB; SELECT...
View ArticleNot able to insert arbitrary binary data / invalid UTF8 characters into a...
We have a VARCHAR(255) column using collation utf8_unicode_ci in a table. We can write arbitrary byte sequences (data that contains invalid UTF8 character sequences) using INSERT or UPDATE statements...
View ArticleQuestion marks instead of emoji when exporting from the mysql database to a...
I would like to export my emoji database, but I'm having a problem with the export. When I export my table to .sql some characters are replaced with "?". more precisely, the symbols of the flags. For...
View ArticleCollations break on MySQL Update (no replies)
We use a non-standard collation in order that customers can search for products using 14.4v or P-ABCDE. The period and hyphen in the voltage or part number would normally be treated by FullText as...
View ArticleCollation and illegal mix (1 reply)
i have a 8.0.37 mysql server running on azure. The server, the database, all tables and all columns are set to character set latin1 and collate latin1_general_ci. when i create a view with unions from...
View Article
