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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-and-plugins.html
Time spent executing the code while the plugin was loaded was still spent even if the plugin is unloaded later. Removing a plugin with UNINSTALL PLUGIN does not affect information already collected for code in that plugin. The associated event ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-table-descriptions.html
Tables in the performance_schema database can be grouped as follows: Setup tables. The events_waits_current table contains the most recent event for each thread. Other similar tables contain current events at different levels of the event ...
https://dev.mysql.com/doc/refman/5.7/en/stored-program-variables.html
System variables and user-defined variables can be used in stored programs, just as they can be used outside stored-program context. In addition, stored programs can use DECLARE to define local variables, and stored routines (procedures and ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-install-linux-binary.html
This section covers the steps necessary to install the correct executables for each type of Cluster node from precompiled binaries supplied by Oracle. Only the NDB Cluster data node executable ndbd (single-threaded) or ndbmtd (multithreaded) is ...
https://dev.mysql.com/doc/refman/5.7/en/replication-gtids-concepts.html
No error is raised, and no statement in the transaction is executed. The GTID is present before the replicated transaction begins to execute, and is persisted even if the replicated transaction is not written to the binary log on the replica, or is ... A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (the ...
https://dev.mysql.com/doc/refman/5.7/en/gis-class-curve.html
A Curve is a one-dimensional geometry, usually represented by a sequence of points. Particular subclasses of Curve define the type of interpolation between points. A Curve is simple if it does not pass through the same point twice, with the ...
https://dev.mysql.com/doc/refman/5.7/en/numeric-types.html
These types include the exact numeric data types (INTEGER, SMALLINT, DECIMAL, and NUMERIC), as well as the approximate numeric data types (FLOAT, REAL, and DOUBLE PRECISION). The keyword INT is a synonym for INTEGER, and the keywords DEC and FIXED ...
https://dev.mysql.com/doc/refman/5.7/en/pluggable-storage-overview.html
The MySQL pluggable storage engine architecture enables a database professional to select a specialized storage engine for a particular application need while being completely shielded from the need to manage any specific application coding ...
https://dev.mysql.com/doc/refman/5.7/en/drop-database.html
IF EXISTS is used to prevent an error from occurring if the database does not exist. DROP {DATABASE | SCHEMA} [IF EXISTS] db_name DROP DATABASE drops all tables in the database and deletes the database. Be very careful with this statement! To use ...
https://dev.mysql.com/doc/refman/5.7/en/reset.html
reset_option: { MASTER | QUERY CACHE | SLAVE } The RESET statement is used to clear the state of various server operations. The following list describes the permitted RESET statement reset_option values: RESET MASTER Deletes all binary logs listed ...