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https://dev.mysql.com/doc/refman/5.7/en/faqs-sql-modes.html
Does strict mode impact performance? The intensive validation of input data that some settings requires more time than if the validation is not done. What is the default server SQL mode when MySQL 5.7 is installed? The default SQL mode in MySQL 5.7 ...What is the default server SQL mode when MySQL 5.7 is installed? ...
https://dev.mysql.com/doc/refman/5.7/en/replication-bugs.html
When you have determined that there is no user error involved, and replication still either does not work at all or is unstable, it is time to send us a bug report. Please spend some time and effort in preparing a good bug report. If you have a ...
https://dev.mysql.com/doc/refman/5.7/en/extended-show.html
Some extensions to SHOW statements accompany the implementation of INFORMATION_SCHEMA: SHOW can be used to get information about the structure of INFORMATION_SCHEMA itself. Several SHOW statements accept a WHERE clause that provides more ...
https://dev.mysql.com/doc/refman/5.7/en/security-plugins.html
(MySQL Enterprise Edition only) MySQL Enterprise Audit, implemented using a server plugin, uses the open MySQL Audit API to enable standard, policy-based monitoring and logging of connection and query activity executed on specific MySQL servers.
https://dev.mysql.com/doc/refman/5.7/en/gis-class-multicurve.html
A MultiCurve is a geometry collection composed of Curve elements. A MultiCurve is simple if and only if all of its elements are simple; the only intersections between any two elements occur at points that are on the boundaries of both elements. A ...
https://dev.mysql.com/doc/refman/5.7/en/myisamchk-general-options.html
If the file does not exist or is otherwise inaccessible, an error occurs. If the file does not exist or is otherwise inaccessible, an error occurs. --wait, -w Command-Line Format --wait Type Boolean Default Value false Instead of terminating with an ... The options described in this section can be used for any type of table maintenance operation performed by ...
https://dev.mysql.com/doc/refman/5.7/en/alter-table-problems.html
If you get a duplicate-key error when using ALTER TABLE to change the character set or collation of a character column, the cause is either that the new column collation maps two keys to the same value or that the table is corrupted. In the latter ...
https://dev.mysql.com/doc/refman/5.7/en/mysqld.html
System variables can be set at server startup, and many of them can be changed at runtime to effect dynamic server reconfiguration. You can monitor these status variables to access runtime performance characteristics. mysqld, also known as MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/using-systemd.html
This script assists in creating the error log file only if the log location matches a pattern (/var/log/mysql*.log for RPM platforms, /var/log/mysql/*.log for Debian platforms). In other cases, the error log directory must be writable or the error ...If you install MySQL from a source distribution on a platform that uses systemd, obtain systemd support for MySQL by configuring the distribution using the -DWITH_SYSTEMD=1 CMake ...
https://dev.mysql.com/doc/refman/5.7/en/sys-io-global-by-file-by-bytes.html
These views summarize global I/O consumers to display amount of I/O, grouped by file. By default, rows are sorted by descending total I/O (bytes read and written). The io_global_by_file_by_bytes and x$io_global_by_file_by_bytes views have these ...