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https://dev.mysql.com/doc/refman/8.0/en/date-calculations.html
Its arguments are the unit in which you want the result expressed, and the two dates for which to take the difference. The following query shows, for each pet, the birth date, the current date, and the age in years. MySQL provides several functions ... MySQL provides several functions that you can use to perform calculations on dates, for example, to calculate ages or extract parts of ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-replica.html
--master-retry-count=count Command-Line Format --master-retry-count=# Deprecated Yes Type Integer Default Value 86400 Minimum Value 0 Maximum Value (64-bit platforms) 18446744073709551615 Maximum Value (32-bit platforms) 4294967295 The number of ...
https://dev.mysql.com/doc/refman/8.0/en/time-zone-support.html
Beginning with MySQL 8.0.19, time zone offsets are also supported for inserted datetime values; see Section 13.2.2, “The DATE, DATETIME, and TIMESTAMP Types”, for more information. If you want locale-specific arithmetic for DATE, TIME, or ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
The coordinator now checks ongoing schema operations for timeout at regular intervals, and marks participants that have not yet completed a given schema operation as failed when detecting timeout. A database thus created uses the default MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-timing.html
This section discusses the available timers and their characteristics, and how timing values are represented in events. Performance Schema Timers Performance Schema timers vary in precision and amount of overhead. The overhead per event is twice the ...Instruments time events, which is how the Performance Schema provides an idea of how long events ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-parameters.html
If this value is exceeded, a delay is imposed on INSERT, UPDATE, and DELETE operations to allow time for purge to catch up. The --innodb-status-file option is intended for temporary use, as SHOW ENGINE INNODB STATUS output generation can affect ...
https://dev.mysql.com/doc/refman/8.0/en/point-in-time-recovery-positions.html
Use the --start-datetime and --stop-datetime options to specify a short time period around tp, and then look for the event in the output. Note Only use the --start-datetime and --stop-datetime options to help you find the actual event positions of ...Because the output of mysqlbinlog includes SET TIMESTAMP statements before each SQL statement recorded, the recovered data and related MySQL logs reflect the original times at which the transactions were ...
https://dev.mysql.com/doc/refman/8.0/en/time.html
MySQL retrieves and displays TIME values in 'hh:mm:ss' format (or 'hhh:mm:ss' format for large hours values). The only delimiter recognized between a time part and a fractional seconds part is the decimal point. The hours part may be so large ...
https://dev.mysql.com/doc/refman/8.0/en/point-in-time-recovery-binlog.html
This section explains the general idea of using the binary log to perform a point-in-time-recovery. The next section, Section 9.5.2, “Point-in-Time Recovery Using Event Positions”, explains the operation in details with an example. Note Many of ...If your binary log contains \0 (null) characters, that output cannot be parsed by mysql unless you invoke it with the --binary-mode ...
https://dev.mysql.com/doc/refman/8.0/en/point-in-time-recovery.html
(The full backup can be made in several ways, such as those listed in Section 9.2, “Database Backup Methods”.) Point-in-time recovery then brings the server up to date incrementally from the time of the full backup to a more recent time.