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https://dev.mysql.com/doc/refman/8.0/en/events-syntax.html
MySQL provides several SQL statements for working with scheduled events: New events are defined using the CREATE EVENT statement. The definition of an existing event can be changed by means of the ALTER EVENT statement. When a scheduled event is no ...
https://dev.mysql.com/doc/refman/8.0/en/example-storage-engine.html
mysql> CREATE TABLE test (i INT) ENGINE = EXAMPLE; Query OK, 0 rows affected (0.78 sec) mysql> INSERT INTO test VALUES(1),(2),(3); ERROR 1031 (HY000): Table storage engine for 'test' doesn't » have this option mysql> SELECT * FROM test; Empty set ... The EXAMPLE storage engine is a stub engine that does ...
https://dev.mysql.com/doc/refman/8.0/en/explain-output.html
If so, create an appropriate index and check the query with EXPLAIN again. Plan isn't ready yet (JSON property: none) This value occurs with EXPLAIN FOR CONNECTION when the optimizer has not finished creating the execution plan for the statement ...
https://dev.mysql.com/doc/refman/8.0/en/fractional-seconds.html
For example: CREATE TABLE t1 (t TIME(3), dt DATETIME(6)); The fsp value, if given, must be in the range 0 to 6. MySQL has fractional seconds support for TIME, DATETIME, and TIMESTAMP values, with up to microseconds (6 digits) precision: To define a ...
https://dev.mysql.com/doc/refman/8.0/en/full-text-adding-collation.html
The instructions here add a collation for a simple character set, which as discussed in Section 12.14, “Adding a Collation to a Character Set”, can be created using a configuration file that describes the character set properties. For a complex ... Warning User-defined collations are deprecated; you should expect support for them to be removed in a future version of ...
https://dev.mysql.com/doc/refman/8.0/en/fulltext-boolean.html
The minimum and maximum word length full-text parameters apply to FULLTEXT indexes created using the built-in FULLTEXT parser and MeCab parser plugin. Minimum and maximum word length full-text parameters do not apply to FULLTEXT indexes created ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-enterprise-backup.html
MySQL Enterprise Backup is a commercially-licensed backup utility for MySQL Server, available with MySQL Enterprise Edition. This section explains how to back up and subsequently restore a Group Replication member using MySQL Enterprise Backup. The ...
https://dev.mysql.com/doc/refman/8.0/en/ibd2sdi.html
ibd2sdi is a utility for extracting serialized dictionary information (SDI) from InnoDB tablespace files. ibd2sdi can be run on file-per-table tablespace files (*.ibd files), general tablespace files (*.ibd files), system tablespace files (ibdata* ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-buffer-pool-stats-table.html
PAGES_CREATE_RATE The number of pages created per second (pages created since the last printout / time elapsed). The INNODB_BUFFER_POOL_STATS table provides much of the same buffer pool information provided in SHOW ENGINE INNODB STATUS output. Much ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-innodb-indexes-table.html
Most indexes created implicitly by InnoDB have consistent names but the index names are not necessarily unique. For GEN_CLUST_INDEX indexes, this value is 0 because the index is created using an artificial value rather than a real table column. Any ...For related usage information and examples, see Section 17.15.3, “InnoDB INFORMATION_SCHEMA Schema Object ...