utf8mb4

I have a string that looks like this: Now, when my app shoves this string into its utf8 mysql database column, it looks like this in the MySQL CLI: If I select convert(mystring using utfmb4) it still looks like this. And if I turn it to hex using select hex(mystring) from mytable; , it looks like this: C3A2CB9CE282ACC3AFC2B8C28FC3B0C5B8C592CB86C3B0C5B8C592C5A0C3B0C5B8C592C281C3B0C5B8E280A1C2ACC3B0C5B8E280A1C2A7 Now, let's say I want to find strings with that emoji wave in it. Well, the hex for the wave emoji is F09F8C8A . But F09F8C8A isn't in the hex above so something like select * from

We have a mySQL DB that only supports utf8. But we are getting some data feeds that require utf8mb4 for storing in mySQL. How can we detect (in Java) if a string will require utf8mb4 charset? Characters that require utf8mb4 are represented as a surrogate pair in Java, and occupy 2 chars. A simple way to detect them is therefore checking if the length of the string in chars is the same as the number of code points: boolean requiresMb4(String s) { int len = s.length(); return len != s.codePointCount(0, len); } 来源： https://stackoverflow.com/questions/21465439/detecting-a-utf8mb4-charset

I have a local webserver running on my pc to which I use for local development. I'm now at the stage of exporting the database and importing onto my hosted VPS. When exporting then importing I get the following error! 1115 - Unknown character set: 'utf8mb4' Can somebody point me in the right direction? The error clearly states that you don't have utf8mb4 supported on your stage db server. Cause : probably locally you have MySQL version 5.5.3 or greater, and on stage/hosted VPS you have MySQL server version less then 5.5.3 The utf8mb4 character sets was added in MySQL 5.5.3. utf8mb4 was added

I would like to insert emoji like 😃 in mariaDB database but I always get a sql error. Here is the stacktrace: 12-01-2018 16:01:44.466 [Executor - Migration - 1] WARN o.h.e.jdbc.spi.SqlExceptionHelper.logExceptions:129 - SQL Error: 1366, SQLState: 22007 12-01-2018 16:01:44.466 [Executor - Migration - 1] ERROR o.h.e.jdbc.spi.SqlExceptionHelper.logExceptions:131 - (conn:498) Incorrect string value: '\xF0\x9F\x92\xB3\xF0\x9F...' for column 'notes' at row 1 Query is: insert into customer (backend_archiving_date, backend_creation_date, backend_update_date, genius_client_id, address, birthday, city,

Well i got a php script that takes nicknames from a the Steam web-api and insert them into a mysql db. Many of them got rare russian and greek characters. I set php to utf-8 in the php.ini and in all the php files with mb_internal_encoding('utf-8'); My PDO connector is configured to handle utf8 $connection = new PDO('mysql:host=localhost;dbname=d2bd;mysql:charset=utf8mb4', 'root', ''); $connection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false); $connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $connection->setAttribute(PDO::ATTR_PERSISTENT, true); $connection-