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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-statement-tables.html
Statement events occur at a high level of the event hierarchy. Within the event hierarchy, wait events nest within stage events, which nest within statement events, which nest within transaction events. These tables store statement events: ...
https://dev.mysql.com/doc/refman/5.7/en/query-cache-configuration.html
Note The query cache is deprecated as of MySQL 5.7.20, and is removed in MySQL 8.0. The have_query_cache server system variable indicates whether the query cache is available: mysql> SHOW VARIABLES LIKE 'have_query_cache'; ...
https://dev.mysql.com/doc/refman/5.7/en/set-password.html
SET PASSWORD [FOR user] = password_option password_option: { 'auth_string' | PASSWORD('auth_string') } The SET PASSWORD statement assigns a password to a MySQL user account. = PASSWORD('auth_string') syntax is deprecated in MySQL 5.7 and is removed ...
https://dev.mysql.com/doc/refman/5.7/en/set-variable.html
variable: { user_var_name | param_name | local_var_name | {GLOBAL | @@GLOBAL.} system_var_name | [SESSION | @@SESSION. | @@] system_var_name } SET syntax for variable assignment enables you to assign values to different types of variables that ...
https://dev.mysql.com/doc/refman/5.7/en/sql-prepared-statements.html
Using prepared statements with placeholders for parameter values has the following benefits: Less overhead for parsing the statement each time it is executed. Typically, database applications process large volumes of almost-identical statements, ...
https://dev.mysql.com/doc/refman/5.7/en/trigger-syntax.html
To create a trigger or drop a trigger, use the CREATE TRIGGER or DROP TRIGGER statement, described in Section 13.1.20, “CREATE TRIGGER Statement”, and Section 13.1.31, “DROP TRIGGER Statement”. Here is a simple example that associates a ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-programs-ndb-select-count.html
--defaults-group-suffix Command-Line Format --defaults-group-suffix=string Type String Default Value [none] Also read groups with concat(group, suffix). ndb_select_count prints the number of rows in one or more NDB tables. With a single table, the ...
https://dev.mysql.com/doc/refman/5.7/en/thread-pool-operation.html
The thread pool consists of a number of thread groups, each of which manages a set of client connections. As connections are established, the thread pool assigns them to thread groups in round-robin fashion. To configure the number of thread ...The ...
https://dev.mysql.com/doc/refman/5.7/en/replication-administration-skip.html
The binary log is organized as a sequence of groups known as event groups, and each event group consists of a sequence of events. For nontransactional tables, an event group corresponds to a single SQL statement. When you use a SET GLOBAL ... If ...
https://dev.mysql.com/doc/refman/5.7/en/replication-semisync.html
If your goal is to implement a fault-tolerant replication topology where all the servers receive the same transactions in the same order, and a server that crashes can rejoin the group and be brought up to date automatically, you can use Group ...