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https://dev.mysql.com/doc/refman/8.0/en/internal-functions.html
CAN_ACCESS_COLUMN(ARGS) CAN_ACCESS_DATABASE(ARGS) CAN_ACCESS_TABLE(ARGS) CAN_ACCESS_USER(ARGS) CAN_ACCESS_VIEW(ARGS) GET_DD_COLUMN_PRIVILEGES(ARGS) GET_DD_CREATE_OPTIONS(ARGS) GET_DD_INDEX_SUB_PART_LENGTH(ARGS) INTERNAL_AUTO_INCREMENT(ARGS) ...
https://dev.mysql.com/doc/refman/8.0/en/internal-locking.html
Deadlocks affect performance rather than representing a serious error, because InnoDB automatically detects deadlock conditions by default and rolls back one of the affected transactions. This section discusses internal locking; that is, locking ...
https://dev.mysql.com/doc/refman/8.0/en/invoking-programs.html
This is likely to be the case if you get a “program not found” error whenever you attempt to run a MySQL program from any directory other than the bin directory. To invoke a MySQL program from the command line (that is, from your shell or ...
https://dev.mysql.com/doc/refman/8.0/en/json-creation-functions.html
An error occurs if any key name is NULL or the number of arguments is odd. The functions listed in this section compose JSON values from component elements. JSON_ARRAY([val[, val] ...]) Evaluates a (possibly empty) list of values and returns a JSON ...
https://dev.mysql.com/doc/refman/8.0/en/json-functions.html
For functions that take a JSON argument, an error occurs if the argument is not a valid JSON value. The functions described in this section perform operations on JSON values. For discussion of the JSON data type and additional examples showing how ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-plugin-installation.html
For example: mysql> SELECT PLUGIN_NAME, PLUGIN_STATUS FROM INFORMATION_SCHEMA.PLUGINS WHERE PLUGIN_NAME LIKE 'keyring%'; +--------------+---------------+ | PLUGIN_NAME | PLUGIN_STATUS | +--------------+---------------+ | keyring_file | ACTIVE | ...
https://dev.mysql.com/doc/refman/8.0/en/kill.html
If the thread is waiting for free disk space in a write call, the write is aborted with a “disk full” error message. KILL [CONNECTION | QUERY] processlist_id Each connection to mysqld runs in a separate thread. Thread processlist identifiers ...
https://dev.mysql.com/doc/refman/8.0/en/making-trace-files.html
The trace file can become very large! To generate a smaller trace file, you can use debugging options something like this: mysqld --debug=d,info,error,query,general,where:O,/tmp/mysqld.trace This only prints information with the most interesting ...
https://dev.mysql.com/doc/refman/8.0/en/memory-storage-engine.html
For information on handling each of these situations to prevent stale reads or errors, see Section 19.5.1.21, “Replication and MEMORY Tables”. The MEMORY storage engine (formerly known as HEAP) creates special-purpose tables with contents that ...
https://dev.mysql.com/doc/refman/8.0/en/merge-storage-engine.html
If you specify no INSERT_METHOD option or if you specify it with a value of NO, inserts into the MERGE table are not permitted and attempts to do so result in an error. The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection ...