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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-status-monitoring.html
However, the content of the tables in the performance_schema database misses events. Names for these variables have several forms: Performance_schema_xxx_classes_lost indicates how many instruments of type xxx could not be loaded.
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-status-variable-summary-tables.html
The meaning of “account” in these tables is similar to its meaning in the MySQL grant tables in the mysql system database, in the sense that the term refers to a combination of user and host values. Note The value of the show_compatibility_56 ...
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/performance-schema-threads-table.html
PROCESSLIST_DB The default database for the thread, or NULL if none has been selected. The threads table contains a row for each server thread. Each row contains information about a thread and indicates whether monitoring and historical event ...
https://dev.mysql.com/doc/refman/5.7/en/platform-support.html
MySQL platform support evolves over time; please refer to https://www.mysql.com/support/supportedplatforms/database.html for the latest updates.
https://dev.mysql.com/doc/refman/5.7/en/point-in-time-recovery.html
(The full backup can be made in several ways, such as those listed in Section 7.2, “Database Backup Methods”.) Point-in-time recovery then brings the server up to date incrementally from the time of the full backup to a more recent time.
https://dev.mysql.com/doc/refman/5.7/en/preface.html
This is the Reference Manual for the MySQL Database System, version 5.7, through release 5.7.44. Differences between minor versions of MySQL 5.7 are noted in the present text with reference to release numbers (5.7.x). This manual is not intended ...
https://dev.mysql.com/doc/refman/5.7/en/processlist-access.html
db is the default database for the thread, or NULL if none has been selected. The following discussion enumerates the sources of process information, the privileges required to see process information, and describes the content of process list ...
https://dev.mysql.com/doc/refman/5.7/en/proxy-users.html
In this case, employee_ext can access tables in the employees database. The plugin that authenticates a given connection may request that the connecting (external) user be treated as a different user for privilege-checking purposes. This enables the ...
https://dev.mysql.com/doc/refman/5.7/en/query-cache.html
This is a typical situation for many Web servers that generate many dynamic pages based on database content. Note The query cache is deprecated as of MySQL 5.7.20, and is removed in MySQL 8.0. The query cache stores the text of a SELECT statement ...