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https://dev.mysql.com/doc/refman/5.7/en/sys-io-global-by-wait-by-latency.html
max_latency The maximum single wait time of timed occurrences of the I/O event. These views summarize global I/O consumers to display amount of I/O and time waiting for I/O, grouped by event. total_latency The total wait time of timed occurrences ...The io_global_by_wait_by_latency and x$io_global_by_wait_by_latency views have these columns: event_name The I/O event name, with the wait/io/file/ prefix ...
https://dev.mysql.com/doc/refman/5.7/en/replication-mode-change-online-concepts.html
When using GTIDs you can take advantage of auto-positioning and automatic fail-over, as well as use WAIT_FOR_EXECUTED_GTID_SET(), session_track_gtids, and monitor replicated transactions using Performance Schema tables. The valid values for ... To ...
https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html
If a timeout value is specified, MASTER_POS_WAIT() stops waiting when timeout seconds have elapsed. The return string has a maximum length of 39 (4 x 8 + 7). The function returns NULL if the replica SQL thread is not started, the replica's source ...
https://dev.mysql.com/doc/refman/5.7/en/backup-policy.html
A full backup (a snapshot of the data at a point in time) can be done in MySQL with several tools. The incremental backups are smaller and take less time to produce. The tradeoff is that, at recovery time, you cannot restore your data just by ...For ...
https://dev.mysql.com/doc/refman/5.7/en/create-trigger.html
CREATE [DEFINER = user] TRIGGER trigger_name trigger_time trigger_event ON tbl_name FOR EACH ROW [trigger_order] trigger_body trigger_time: { BEFORE | AFTER } trigger_event: { INSERT | UPDATE | DELETE } trigger_order: { FOLLOWS | PRECEDES } ...A ...
https://dev.mysql.com/doc/refman/5.7/en/binary-log-mixed.html
A warning is added to the SHOW WARNINGS table each time such a statement is executed. Type binlog_format SLC RLC Error / Warning Logged as * * No No Error: Cannot execute statement: Binary logging is impossible since at least one engine is involved ...If a statement is logged by row and the session that executed the statement has any temporary tables, logging by row is used for all subsequent statements (except for those accessing temporary tables) until all temporary tables in use by that session are ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-object-filtering.html
The ENABLED column indicates whether matching objects are monitored, and TIMED indicates whether to collect timing information. Setting the TIMED column affects Performance Schema table contents as described in Section 25.4.1, “Performance Schema ... The setup_objects table controls whether the Performance Schema monitors particular table and stored program ...
https://dev.mysql.com/doc/refman/5.7/en/sys-schema-table-statistics.html
By default, rows are sorted by descending total wait time (tables with most contention first). total_latency The total wait time of timed I/O events for the table. fetch_latency The total wait time of timed read I/O events for the table. The ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-drop-table.html
--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving up. --connect-retry-delay Command-Line Format --connect-retry-delay=# Type ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-file-per-table-tablespaces.html
An innodb_file_per_table setting can be specified in an option file or configured at runtime using a SET GLOBAL statement. Changing the setting at runtime requires privileges sufficient to set global system variables. Option file: [mysqld] ... A ...