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https://dev.mysql.com/doc/refman/5.7/en/partitioning-maintenance.html
Example: ALTER TABLE t1 REPAIR PARTITION p0,p1; Normally, REPAIR PARTITION fails when the partition contains duplicate key errors. You can check partitions for errors in much the same way that you can use CHECK TABLE with nonpartitioned tables. A ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-what-is-new-7-6.html
Previously, it was sometimes the case that increasing the number of LDM threads could lead to index memory exhaustion while large amounts of DataMemory remained available. A system name based on the time the management server was started is ... New ...
https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html
The ENGINE option is part of the CREATE TABLE statement, and should not be used following the SELECT; this would result in a syntax error. If any errors occur while copying the data to the table, it is automatically dropped and not created. If ...
https://dev.mysql.com/doc/refman/5.7/en/repair-table.html
Table Repair Considerations REPAIR TABLE upgrades a table if it contains old temporal columns in pre-5.6.4 format (TIME, DATETIME, and TIMESTAMP columns without support for fractional seconds precision) and the avoid_temporal_upgrade system variable ...Possible causes include but are not limited to file system ...[QUICK] [EXTENDED] [USE_FRM] REPAIR TABLE ...
https://dev.mysql.com/doc/refman/5.7/en/datetime.html
A DATETIME or TIMESTAMP value can include a trailing fractional seconds part in up to microseconds (6 digits) precision. The fractional part should always be separated from the rest of the time by a decimal point; no other fractional seconds ...This ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-create-table-external.html
Attempting to access a table when the associated data file is missing causes a serious error that requires a server restart. There are different reasons for creating InnoDB tables externally; that is, creating tables outside of the data directory.
https://dev.mysql.com/doc/refman/5.7/en/faqs-thread-pool.html
The default thread-handling model in MySQL Server executes statements using one thread per client connection. As more clients connect to the server and execute statements, overall performance degrades. The Thread Pool plugin increases server ...What ...
https://dev.mysql.com/doc/refman/5.7/en/sys-processlist.html
time The time in seconds that the thread has been in its current state. The MySQL process list indicates the operations currently being performed by the set of threads executing within the server. By default, rows are sorted by descending process ...They provide more complete information than the SHOW PROCESSLIST statement and the INFORMATION_SCHEMA PROCESSLIST table, and are also ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-next-key-locking.html
For example, if a SELECT is executed twice, but returns a row the second time that was not returned the first time, the row is a “phantom” row. The so-called phantom problem occurs within a transaction when the same query produces different ...
https://dev.mysql.com/doc/refman/5.7/en/windows-start-service.html
You should now be able to invoke any MySQL executable program by typing its name at the DOS prompt from any directory on the system, without having to supply the path. If mysqld does not start, check the error log to see whether the server wrote any ... On Windows, the recommended way to run MySQL is to install it as a Windows service, so that MySQL starts and stops automatically when Windows starts and ...