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https://dev.mysql.com/doc/refman/8.4/en/information-schema-columns-table.html
For information about generated columns, see Section 15.1.20.8, “CREATE TABLE and Generated Columns”. You can cause such information to be hidden by setting show_gipk_in_create_table_and_information_schema = OFF. The related ST_GEOMETRY_COLUMNS ...ORDINAL_POSITION is necessary because you might want to say ORDER BY ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-migration.html
To move databases in a binary format from Unix to Windows or from Windows to Unix, create all databases and tables using lowercase names. In addition, MySQL Enterprise Backup can create compressed backup files, and back up subsets of tables. This ...MySQL Enterprise Backup The MySQL Enterprise Backup product lets you back up a running MySQL database with minimal disruption to operations while producing a consistent snapshot of the ...
https://dev.mysql.com/doc/refman/8.4/en/nontransactional-tables.html
This can happen if you try to create a table using a transactional storage engine that is not supported by your mysqld server (or that was disabled with a startup option). If mysqld does not support a storage engine, it instead creates the table as ... If you receive the following message when trying to perform a ROLLBACK, it means that one or more of the tables you used in the transaction do not support transactions: Warning: Some non-transactional changed tables couldn't be rolled back These nontransactional tables are not affected by the ROLLBACK ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-virtual-table.html
CREATE TABLE `t1` ( `a` int(11) DEFAULT NULL, `b` int(11) DEFAULT NULL, `c` int(11) GENERATED ALWAYS AS (5) VIRTUAL ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4; However, metadata for such a column does appear in the INNODB_COLUMNS table. The ...The ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-online-ddl-performance.html
Session 1: mysql> CREATE TABLE t1 (c1 INT) ENGINE=InnoDB; mysql> START TRANSACTION; mysql> SELECT * FROM t1; The session 1 SELECT statement takes a shared metadata lock on table t1. Online DDL improves several aspects of MySQL operation: ...Reduced ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-rpd-mirror-table.html
The rpd_mirror table keeps track of all existing tables in the DB System, whose engine is InnoDB. MYSQL_ACCESS_COUNT Number of times the table has been accessed by the DB System. HEATWAVE_ACCESS_COUNT Number of times the table has been accessed by ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-innodb-ft-deleted-table.html
The INNODB_FT_DELETED table stores rows that are deleted from the FULLTEXT index for an InnoDB table. Before querying it, set the value of the innodb_ft_aux_table system variable to the name (including the database name) of the table that contains ...For more information about InnoDB FULLTEXT search, see Section 17.6.2.4, “InnoDB Full-Text Indexes”, and Section 14.9, “Full-Text Search ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-shell-tutorial-javascript-relational-tables.html
You can also use X DevAPI to work with relational tables. In MySQL, each relational table is associated with a particular storage engine. The examples in this section use InnoDB tables in the world_x schema. Show All Tables To display all ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-shell-tutorial-python-relational-tables.html
You can also use X DevAPI to work with relational tables. In MySQL, each relational table is associated with a particular storage engine. The examples in this section use InnoDB tables in the world_x schema. Show All Tables To display all ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-data-lock-waits-table.html
The data_lock_waits table implements a many-to-many relationship showing which data lock requests in the data_locks table are blocked by which held data locks in the data_locks table. The table exposes not only which lock a session or transaction ...Held locks in data_locks appear in data_lock_waits only if they block some lock ...