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https://dev.mysql.com/doc/refman/8.4/en/innodb-deadlocks.html
A deadlock can also occur when such statements lock ranges of index records and gaps, with each transaction acquiring some locks but not others due to a timing issue. A deadlock can occur when transactions lock rows in multiple tables (through ... A ...
https://dev.mysql.com/doc/refman/8.4/en/replication-howto-masterstatus.html
If you are planning to shut down the source to create a data snapshot, you can optionally skip this procedure and instead store a copy of the binary log index file along with the data snapshot. The source binary log coordinates where the replica ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-partitioning.html
Define a Data Placement Key Defining a data placement key requires adding a column comment with the data placement keyword string: RAPID_COLUMN=DATA_PLACEMENT_KEY=N where N is an index value that defines the priority order of data placement keys.
https://dev.mysql.com/doc/refman/8.4/en/fulltext-search-mecab.html
In addition to tokenizing text into meaningful words, MeCab indexes are typically smaller than ngram indexes, and MeCab full-text searches are generally faster. Verify that the MeCab parser plugin is loaded using the SHOW PLUGINS statement. Creating ... The built-in MySQL full-text parser uses the white space between words as a delimiter to determine where words begin and end, which is a limitation when working with ideographic languages that do not use word ...
https://dev.mysql.com/doc/refman/8.4/en/myisam-optimization.html
To coalesce fragmented rows and eliminate wasted space that results from deleting or updating rows, run myisamchk in recovery mode: $> myisamchk -r tbl_name You can optimize a table in the same way by using the OPTIMIZE TABLE SQL statement. There ...
https://dev.mysql.com/doc/refman/8.4/en/view-restrictions.html
View processing is not optimized: It is not possible to create an index on a view. Indexes can be used for views processed using the merge algorithm. However, a view that is processed with the temptable algorithm is unable to take advantage of ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-changelog-12-1-0-2-0.html
Functionality Added or Changed The compliance framework for MySQL Configuration Metrics is added in this release. Prev Up A.11 Changes in Oracle Enterprise Manager for MySQL Database 12.1.0.3.0 (2015-10-22) Home .
https://dev.mysql.com/doc/refman/8.4/en/innodb-migration.html
Issue this ALTER TABLE statement to delete the current .ibd file: ALTER TABLE tbl_name DISCARD TABLESPACE; Copy the backup .ibd file to the proper database directory. Issue this ALTER TABLE statement to tell InnoDB to use the new .ibd file for the ... This section describes techniques for moving or copying some or all InnoDB tables to a different server or ...
https://dev.mysql.com/doc/refman/8.4/en/server-plugins.html
MySQL Enterprise Edition includes a thread pool plugin that manages connection threads to increase server performance by efficiently managing statement execution threads for large numbers of client connections. MySQL Enterprise Edition includes a ...
https://dev.mysql.com/doc/refman/8.4/en/storage-engine-setting.html
When you create a new table, you can specify which storage engine to use by adding an ENGINE table option to the CREATE TABLE statement: -- ENGINE=INNODB not needed unless you have set a different -- default storage engine. To convert a table from ...CREATE TABLE t1 (i INT) ENGINE = INNODB; -- Simple table definitions can be switched from one to ...