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https://dev.mysql.com/doc/refman/5.7/en/insert-select.html
INSERT [LOW_PRIORITY | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] SELECT ... [ON DUPLICATE KEY UPDATE assignment_list] value: {expr | DEFAULT} assignment: col_name = ...
https://dev.mysql.com/doc/refman/5.7/en/install-plugin.html
INSTALL PLUGIN plugin_name SONAME 'shared_library_name' This statement installs a server plugin. It requires the INSERT privilege for the mysql.plugin system table because it adds a row to that table to register the plugin. plugin_name is the name ...
https://dev.mysql.com/doc/refman/5.7/en/internal-locking.html
This section discusses internal locking; that is, locking performed within the MySQL server itself to manage contention for table contents by multiple sessions. This type of locking is internal because it is performed entirely by the server and ...
https://dev.mysql.com/doc/refman/5.7/en/introduction.html
The MySQL software delivers a very fast, multithreaded, multi-user, and robust SQL (Structured Query Language) database server. MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed ...
https://dev.mysql.com/doc/refman/5.7/en/load-data.html
You can use subqueries in the right hand side of SET assignments. The file can be read from the server host or the client host, depending on whether the LOCAL modifier is given. INTO Statement”.) To write data from a table to a file, use SELECT ... To read the file back into a table, use LOAD ...
https://dev.mysql.com/doc/refman/5.7/en/making-trace-files.html
If the mysqld server does not start or it crashes easily, you can try to create a trace file to find the problem. To do this, you must have a mysqld that has been compiled with debugging support. If the version number ends with -debug, it is ...
https://dev.mysql.com/doc/refman/5.7/en/merge-storage-engine.html
The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection of identical MyISAM tables that can be used as one. “Identical” means that all tables have identical column data types and index information. You cannot merge MyISAM ...
https://dev.mysql.com/doc/refman/5.7/en/merge-table-problems.html
(This happens because ALTER TABLE puts UNIQUE indexes before nonunique indexes to facilitate rapid detection of duplicate keys.) Consequently, queries on tables with such indexes may return unexpected results. The following are known problems with ...
https://dev.mysql.com/doc/refman/5.7/en/midpoint-insertion.html
By default, the key cache management system uses a simple LRU strategy for choosing key cache blocks to be evicted, but it also supports a more sophisticated method called the midpoint insertion strategy. When using the midpoint insertion strategy, ...
https://dev.mysql.com/doc/refman/5.7/en/monitoring-performance-schema.html
You can query the tables in the performance_schema database to see real-time information about the performance characteristics of your server and the applications it is running.