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What is engine InnoDB default charset utf8mb4 collate utf8mb4_0900_ai_ci?
From MySQL 8.0, utf8mb4 is the default character set, and the default collation for utf8mb4 is utf8mb4_0900_ai_ci. MySQL 8.0 is also coming with a whole new set of Unicode collations for the utf8mb4 character set. This will allow use of the complete Unicode 9.0.
What is the use of engine InnoDB?
InnoDB is a general-purpose storage engine that balances high reliability and high performance. In MySQL 5.6, InnoDB is the default MySQL storage engine. Unless you have configured a different default storage engine, issuing a CREATE TABLE statement without an ENGINE clause creates an InnoDB table.
What is utf8_general_ci?
utf8_general_ci is a legacy collation that does not support expansions, contractions, or ignorable characters. It can make only one-to-one comparisons between characters.
What does InnoDB stand for?
MySQL
0. InnoDB is a storage engine for MySQL. MySQL 5.5 and later use it by default. It provides the standard ACID-compliant transaction features, along with foreign key support (Declarative Referential Integrity). It is included as standard in most binaries distributed by MySQL AB, the exception being some OEM versions.
How do I change my default engine to InnoDB?
1 Answer. Find mysql configuration file my. ini , find default-storage-engine setting line in [mysqld] section, insert/edit it to default-storage-engine=INNODB , save changes, restart server service.
Is the Default Charset in InnoDB utf8mb4?
So now, all your tables will be UTF8MB4 and any future tables will be created with the same character set. You can, as mentioned in the last link, also use different collations per table and/or per field, but that’s not part of the question – an internet search should be sufficient to deal with this requirement should you need it.
What is default collation for utf8mb4 in MySQL 8.0?
From MySQL 8.0, utf8mb4 is the default character set, and the default collation for utf8mb4 is utf8mb4_0900_ai_ci. MySQL 8.0 is also coming with a whole new set of Unicode collations for the utf8mb4 character set. This will allow use of the complete Unicode 9.0.0 character set in MySQL, and for new applications this is great news.
How to change MySQL charset to utf8mb4?
The command I used was: You will then be asked for the password for the user that you are using – in this case I used root – this is not best practice! 3) use your editor of choice to change utf8 to utf8mb4. Or, if you’re on Linux, you can use the sed utility: 4) Check your output file (belt and braces!) using your editor.
Why is table charset set to utf8mb4 and collation?
Because of utf8mb4 I’ve experienced problems when migrating WP sites to an older MySQL server which does not support it. Is point 2. advisable? Are there any benefits in using charset utf8mb4 over utf8, and collation utf8mb4_unicode_520_ci over utf8_unicode_ci?