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https://dev.mysql.com/doc/refman/8.0/en/innodb-tables.html
This section covers topics related to InnoDB tables. ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-table-problems.html
The file format that MySQL uses to store data has been extensively tested, but there are always circumstances that may cause database tables to become corrupted. The following discussion describes how this can happen and how to handle it.
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-keyring-tables.html
The following sections describe the Performance Schema tables associated with the MySQL keyring (see Section 8.4.4, “The MySQL Keyring”). They provide information about keyring operation: keyring_component_status: Information about the keyring ...
https://dev.mysql.com/doc/refman/8.0/en/sys-schema-tables.html
The following sections describe sys schema tables and triggers. ...
https://dev.mysql.com/doc/refman/8.0/en/explain.html
The SHOW CREATE TABLE, SHOW TABLE STATUS, and SHOW INDEX statements also provide information about tables. {EXPLAIN | DESCRIBE | DESC} tbl_name [col_name | wild] {EXPLAIN | DESCRIBE | DESC} [explain_type] {explainable_stmt | FOR CONNECTION ...The ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-queries-myisam.html
Some general tips for speeding up queries on MyISAM tables: To help MySQL better optimize queries, use ANALYZE TABLE or run myisamchk --analyze on a table after it has been loaded with data. (For unique indexes, this is always 1.) MySQL uses this ...This updates a value for each index part that indicates the average number of rows that have the same ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-locks-per-fragment.html
This table also shows the total time spent waiting for locks successfully and unsuccessfully since fragment or table creation, or since the most recent restart. The values shown in all of the columns ex_req, ex_req_imm_ok, ex_wait_ok, ex_wait_fail, ... The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests on a per-fragment basis, serving as a companion table to operations_per_fragment and ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-info.html
Methods of obtaining such information include the following: Using the SHOW CREATE TABLE statement to view the partitioning clauses used in creating a partitioned table. A new row event is created for a modification that takes place in a different ...Using the SHOW TABLE STATUS statement to determine whether a table is ... This section discusses obtaining ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-limitations-storage-engines.html
This means that partitioned tables cannot be created using any other storage engine than these. (You must be using MySQL NDB Cluster with the NDB storage engine to create NDB tables.) InnoDB storage engine. It is not possible under normal ... In ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-maintenance.html
A number of table and partition maintenance tasks can be carried out on partitioned tables using SQL statements intended for such purposes. Table maintenance of partitioned tables can be accomplished using the statements CHECK TABLE, OPTIMIZE ...