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https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-sys-tablestats-table.html
Statistics are collected again the next time the table is accessed. OTHER_INDEX_SIZE The number of pages on disk that store all secondary indexes for the table. This column is reset each time table statistics are recalculated AUTOINC The next number ... The INNODB_SYS_TABLESTATS table provides a view of low-level status information about InnoDB ...
https://dev.mysql.com/doc/refman/5.7/en/kill.html
KILL permits an optional CONNECTION or QUERY modifier: KILL CONNECTION is the same as KILL with no modifier: It terminates the connection associated with the given processlist_id, after terminating any statement the connection is executing. KILL ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-quick-start.html
Check the server error log for information about what went wrong. The number of Performance Schema tables increases over time as implementation of additional instrumentation proceeds. row *************************** THREAD_ID: 0 EVENT_ID: 5523 ...
https://dev.mysql.com/doc/refman/5.7/en/program-options.html
This is common for options that you want the program to use each time it runs. This method is useful for options that you want to apply each time the program runs. Options are processed in order, so if an option is specified multiple times, the last ... There are several ways to specify options for MySQL programs: List the options on the command line following the program ...
https://dev.mysql.com/doc/refman/5.7/en/string-functions.html
mysql> SELECT CONCAT_WS(',', 'First name', 'Second name', 'Last Name'); -> 'First name,Second name,Last Name' mysql> SELECT CONCAT_WS(',', 'First name', NULL, 'Last Name'); -> 'First name,Last Name' CONCAT_WS() does not skip empty strings. If the ...
https://dev.mysql.com/doc/refman/5.7/en/password-logging.html
An implication of password rewriting is that statements that cannot be parsed (due, for example, to syntax errors) are not written to the general query log because they cannot be known to be password free. Use cases that require logging of all ...
https://dev.mysql.com/doc/refman/5.7/en/validate-password.html
The validate_password plugin implements these capabilities: For SQL statements that assign a password supplied as a cleartext value, validate_password checks the password against the current password policy and rejects the password if it is weak ...
https://dev.mysql.com/doc/refman/5.7/en/replication-formats.html
Replication of the source to the replica works by executing the SQL statements on the replica. When using MIXED format, the binary logging format is determined in part by the storage engine being used and the statement being executed. There are ...
https://dev.mysql.com/doc/refman/5.7/en/concurrent-inserts.html
With LOAD DATA, if you specify CONCURRENT with a MyISAM table that satisfies the condition for concurrent inserts (that is, it contains no free blocks in the middle), other sessions can retrieve data from the table while LOAD DATA is executing. Use ...If there are multiple INSERT statements, they are queued and performed in sequence, concurrently with the SELECT ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-plugin-architecture.html
These interfaces isolate the MySQL Server core from the Group Replication plugin, and are mostly hooks placed in the transaction execution pipeline. The capture component is responsible for keeping track of context related to transactions that are ... MySQL Group Replication is a MySQL plugin and it builds on the existing MySQL replication infrastructure, taking advantage of features such as the binary log, row-based logging, and global transaction ...