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https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html
(Bug #30628330) Previously, it was possible to specify ON EMPTY and ON ERROR clauses in either order. This section contains information about JSON functions that convert JSON data to tabular data. JSON_TABLE(expr, path COLUMNS (column_list) [AS] ...
https://dev.mysql.com/doc/refman/8.0/en/key-space.html
This is for the worst case when all keys are inserted in sorted order and the table doesn't have any compressed keys. You can roughly calculate the size for the index file as (key_length+4)/0.67, summed over all keys. If the first index part is a ...
https://dev.mysql.com/doc/refman/8.0/en/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Some keywords which are otherwise ...
https://dev.mysql.com/doc/refman/8.0/en/kill.html
In most cases, it might take some time for the thread to die because the kill flag is checked only at specific intervals: During SELECT operations, for ORDER BY and GROUP BY loops, the flag is checked after reading a block of rows. KILL [CONNECTION ...
https://dev.mysql.com/doc/refman/8.0/en/linux-installation-native.html
Note The apt-get command installs a number of packages, including the MySQL server, in order to provide the typical tools and application environment. Many Linux distributions include a version of the MySQL server, client tools, and development ...
https://dev.mysql.com/doc/refman/8.0/en/load-index.html
When preloading indexes for multiple partitions, the partitions need not be contiguous, and you need not list their names in any particular order. tbl_index_list: tbl_name [PARTITION (partition_list)] [{INDEX|KEY} (index_name[, index_name] ...)] ...
https://dev.mysql.com/doc/refman/8.0/en/monitor-alter-table-performance-schema.html
In order of occurrence, ALTER TABLE stage events include: stage/innodb/alter table (read PK and internal sort): This stage is active when ALTER TABLE is in the reading-primary-key phase. You can monitor ALTER TABLE progress for InnoDB tables using ...
https://dev.mysql.com/doc/refman/8.0/en/monitor-mysql-memory-use.html
The following example demonstrates how to use Performance Schema and sys schema to monitor MySQL memory usage. Instruments can be enabled by updating the ENABLED column of the Performance Schema setup_instruments table. Memory instruments have ...
https://dev.mysql.com/doc/refman/8.0/en/multifactor-authentication.html
The server invokes authentication plugins in the order listed in the account definition. Authentication involves one party establishing its identity to the satisfaction of a second party. Multifactor authentication (MFA) is the use of multiple ...
https://dev.mysql.com/doc/refman/8.0/en/multiple-column-indexes.html
If you specify the columns in the right order in the index definition, a single composite index can speed up several kinds of queries on the same table. MySQL can create composite indexes (that is, indexes on multiple columns). For certain data ...