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https://dev.mysql.com/doc/refman/8.0/en/json-attribute-functions.html
The functions in this section return attributes of JSON values. An error occurs if the argument is not a valid JSON document. An empty array, empty object, or scalar value has depth 1. A nonempty array containing only elements of depth 1 or ...
https://dev.mysql.com/doc/refman/8.0/en/json-table-functions.html
This section contains information about JSON functions that convert JSON data to tabular data. JSON_TABLE(expr, path COLUMNS (column_list) [AS] alias) Extracts data from a JSON document and returns it as a relational table having the specified ...
https://dev.mysql.com/doc/refman/8.0/en/linux-installation-yum-repo.html
This is a one-time operation, which can be performed by installing an RPM provided by MySQL. You should only enable subrepository for one release series at any time. Before You Start As a popular, open-source software, MySQL, in its original or ...
https://dev.mysql.com/doc/refman/8.0/en/load-data-local-security.html
(This is a change from previous versions of MySQL.) To cause the server to refuse or permit LOAD DATA LOCAL statements explicitly (regardless of how client programs and libraries are configured at build time or runtime), start mysqld with ... The ...
https://dev.mysql.com/doc/refman/8.0/en/locking-service.html
Lock acquisition calls take an integer timeout value that indicates how many seconds to wait to acquire locks before giving up. If the timeout is reached without successful lock acquisition, an ER_LOCKING_SERVICE_TIMEOUT error occurs. If the timeout ... MySQL distributions provide a locking interface that is accessible at two levels: At the SQL level, as a set of loadable functions that each map onto calls to the service ...
https://dev.mysql.com/doc/refman/8.0/en/midpoint-insertion.html
If the block stays at the beginning of the sublist for a long enough time, it is demoted to the warm sublist. This time is determined by the value of the key_cache_age_threshold component of the key cache. By default, the key cache management ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-crash-recovery.html
If you run myisamchk to check tables that mysqld is updating at the same time, you may get a warning that a table is corrupt even when it is not. If the server is run with external locking enabled, you can use myisamchk to check tables at any time.
https://dev.mysql.com/doc/refman/8.0/en/myisam-maintenance-schedule.html
If you are performing many updates to MyISAM tables with dynamic-sized rows (tables with VARCHAR, BLOB, or TEXT columns) or have tables with many deleted rows you may want to defragment/reclaim space from the tables from time to time. It is a good ...
https://dev.mysql.com/doc/refman/8.0/en/myisam-table-close.html
The counter works as follows: The first time a table is updated in MySQL, a counter in the header of the index files is incremented. (The table may still be okay because MySQL always issues writes for everything between each statement.) A table was ... Each MyISAM index file (.MYI file) has a counter in the header that can be used to check whether a table has been closed ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-general-options.html
You can set both variables to large values, because only one of them is used at a time. The options described in this section can be used for any type of table maintenance operation performed by myisamchk. The sections following this one describe ...