Collation 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 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 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 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 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 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 ArticleMySQL 8.0: Migrating to utf8mb4: Things to Consider (no replies)
https://www.percona.com/blog/migrating-to-utf8mb4-things-to-consider/
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 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 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 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 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 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 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 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 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 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 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 ArticleMySQL: Some Character Set Basics (no replies)
MySQL: Some Character Set Basics https://blog.koehntopp.info/2020/08/18/mysql-character-sets.html
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/
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