About, About Tim Hall The notion that Unicode only allows bad characters is wrong. WebYou need to do two things. If you encounter ERRORs, modifications may be needed based on your requirements. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How to convert control characters in MySQL from latin1 to UTF-8? it takes 1 byte to store a character in latin1 and 3 bytes to store a character in utf-8 - is that correct? Can't do those in Latin1 without extensive work), but they will take a bit more time. Assuming now we need to index the whole column, What's the best workaround to index a column which exceed 1000 bytes? . For anything else? Personally I use case insensitive collations more often (for user supplied data at least). That of course is only a benefit to the saboteur, and whoever their loyalties are to, not to the owners or developers of the system. If the sequence of bytes have an interpretation in certain charset, that is either the external system's or the application's domain, not the database's. Storage space increase, however, will be different depending on the language your data is in. Ironically the comment shows exactly the heart of the issue; addressing this issue can be extremely offensive if done improperly. The interesting thing is that my web application, which uses PHP, didnt seem to mind this very much. (conversion does not fail). are patent descriptions/images in public domain? ISO-8859-1 which "understands" those characters. I know there are rows with So in the database, so the query wasnt working 100% correctly. What I usually find in schemes are columns which are either utf8 or latin1.The utf8 columns 12c | Weblatin1_swedish_ciUTF-8fuballfuball. Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. 21c | I use MySQL workbench and if I select the column with the problem I also see a as the query result. Find centralized, trusted content and collaborate around the technologies you use most. But how to know which these characters are \xD1\x80\xD0\xB5\xD0\xB3? Home | Jordan's line about intimate parties in The Great Gatsby? Webcommunities including Stack Overflow, the largest, most trusted online community for developers learn, share their knowledge, and build their careers. Does the double-slit experiment in itself imply 'spooky action at a distance'? To do this, you can dump the structure of your database: And import this structure to another test MySQL database: Next, run the conversion script (below) against your temporary database: The script will spit out !!! You likely currently have a index or key field that is defined as VARCHAR(1000) or similar. The Specified key was too long; max key length is 1000 bytes error occurs when an index contains columns in utf8mb4 because the index may be over this limit. When doing searching, you could also strip all composing characters from the text, but this may substantially change their meaning in some languages. By default, the character set is now utf8. My websites visitors saw proper UTF-8 characters on the website even though the MySQL column was latin1. utf8mb3 and utf8mb4 character sets can require Webjava,mysql,UTF8UTF-8ideaUTF-8JAVAutf-8web.xmlutf-8