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https://dev.mysql.com/doc/refman/5.7/en/performance-schema-system-variables.html
performance_schema_accounts_size Command-Line Format --performance-schema-accounts-size=# System Variable performance_schema_accounts_size Scope Global Dynamic No Type Integer Default Value -1 (signifies autoscaling; do not assign this literal ...
https://dev.mysql.com/doc/refman/5.7/en/show-events.html
Definer The account of the user who created the event, in 'user_name'@'host_name' format. In its simplest form, SHOW EVENTS lists all of the events in the current schema: mysql> SELECT CURRENT_USER(), SCHEMA(); +----------------+----------+ | ...
https://dev.mysql.com/doc/refman/5.7/en/binary-log-mysql-database.html
The contents of the grant tables in the mysql database can be modified directly (for example, with INSERT or DELETE) or indirectly (for example, with GRANT or CREATE USER). This pertains to statements such as GRANT, REVOKE, SET PASSWORD, RENAME ...
https://dev.mysql.com/doc/refman/5.7/en/fulltext-natural-language.html
To search the title or body separately, you would create separate FULLTEXT indexes for each column. Alternatively, you can create FULLTEXT indexes using the ngram parser plugin (for Chinese, Japanese, or Korean) or the MeCab parser plugin (for ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-auto-increment-handling.html
To make this clear, consider an example that uses this table: CREATE TABLE t1 ( c1 INT(11) NOT NULL AUTO_INCREMENT, c2 VARCHAR(10) DEFAULT NULL, PRIMARY KEY (c1) ) ENGINE=InnoDB; Suppose that there are two transactions running, each inserting rows ... InnoDB provides a configurable locking mechanism that can significantly improve scalability and performance of SQL statements that add rows to tables with AUTO_INCREMENT ...
https://dev.mysql.com/doc/refman/5.7/en/memory-use.html
The server caches information in memory as a result of GRANT, CREATE USER, CREATE SERVER, and INSTALL PLUGIN statements. For MEMORY tables explicitly created with CREATE TABLE, only the max_heap_table_size system variable determines how large a ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-operations-per-fragment.html
This currently has the following formats: Base table: DbName/def/TblName BLOB table: DbName/def/NDB$BLOB_BaseTblId_ColNo Ordered index: sys/def/BaseTblId/IndexName Unique index: sys/def/BaseTblId/IndexName$unique The $unique suffix shown for unique ... The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these ...
https://dev.mysql.com/doc/refman/5.7/en/replication-howto.html
Optionally, create a separate user for your replicas to use during authentication with the source when reading the binary log for replication. Before creating a data snapshot or starting the replication process, on the source you should record the ... This section describes how to set up a MySQL server to use binary log file position based ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-status-monitoring.html
Performance_schema_xxx_instances_lost indicates how many instances of object type xxx could not be created. If the server cannot create a given instrumented mutex instance, it increments Performance_schema_mutex_instances_lost. INSTALL PLUGIN ...
https://dev.mysql.com/doc/refman/5.7/en/charset-applications.html
To create a database such that its tables use a given default character set and collation for data storage, use a CREATE DATABASE statement like this: CREATE DATABASE mydb CHARACTER SET utf8 COLLATE utf8_general_ci; Tables created in the database ...