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https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html
(MySQL 8.0.28 and later:) TIME if the date argument is a TIME value and the calculations involve only HOURS, MINUTES, and SECONDS parts (that is, no date parts). DATETIME if the first argument is a DATETIME (or TIMESTAMP) value, or if the first ...
https://dev.mysql.com/doc/refman/8.0/en/expressions.html
For example, if you specify a unit of DAY_SECOND, the value of expr is expected to have days, hours, minutes, and seconds parts. If you specify a value like '1:10', MySQL assumes that the days and hours parts are missing and the value represents ...
https://dev.mysql.com/doc/refman/8.0/en/date-and-time-literals.html
For example, '20070523091528' and '070523091528' are interpreted as '2007-05-23 09:15:28', but '071122129015' is illegal (it has a nonsensical minute part) and becomes '0000-00-00 00:00:00'. Similarly, for values specified as strings that include ...
https://dev.mysql.com/doc/refman/8.0/en/create-event.html
For example, “two minutes and ten seconds” can be expressed as + INTERVAL '2:10' MINUTE_SECOND. Similarly, you can express “every two weeks, beginning six hours and fifteen minutes from now” as EVERY 2 WEEK STARTS CURRENT_TIMESTAMP + ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-backup-id.html
This table provides a way to find the ID of the backup started most recently for this cluster. The backup_id table contains a single column id, which corresponds to a backup ID taken using the ndb_mgm client START BACKUP command.
https://dev.mysql.com/doc/refman/8.0/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 14.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbd-definition.html
For example, in the case of a data node containing several gigabytes of data, a period as long as 10−15 minutes (that is, 600000 to 1000000 milliseconds) might be required to perform a node restart. The current value of this parameter and a ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-system-variables.html
After an unsuccessful auto-rejoin attempt, the member waits 5 minutes before the next try. From MySQL 8.0.21, the default setting is 3, meaning that the member automatically makes 3 attempts to rejoin the group, with 5 minutes between each. This ...
https://dev.mysql.com/doc/refman/8.0/en/full-disk.html
Every 10 minutes it writes an entry to the log file, warning about the disk-full condition. The thread is aborted the next time it checks the disk (in one minute). This section describes how MySQL responds to disk-full errors (such as “no space ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-failure-handling.html
Before MySQL 8.0.24, if a network error occurs during a cloning operation, the operation resumes if the error is resolved within five minutes. The clone_donor_timeout_after_network_failure default setting is 5 minutes but a range of 0 to 30 minutes ... This section describes failure handing at different stages of a cloning ...