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https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-indexes.html
For InnoDB and MyISAM tables, MySQL can create spatial indexes using syntax similar to that for creating regular indexes, but using the SPATIAL keyword. For storage engines that support nonspatial indexing of spatial columns, the engine creates a ...
https://dev.mysql.com/doc/refman/5.7/en/engine-condition-pushdown-optimization.html
column IS [NOT] NULL column IN (value_list) Each item in the value_list must be a constant, literal value. This optimization improves the efficiency of direct comparisons between a nonindexed column and a constant. In such cases, the condition is ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-locks-table.html
LOCK_INDEX The name of the index, if LOCK_TYPE is RECORD; otherwise NULL. LOCK_SPACE The tablespace ID of the locked record, if LOCK_TYPE is RECORD; otherwise NULL. LOCK_PAGE The page number of the locked record, if LOCK_TYPE is RECORD; otherwise ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-page-compression.html
InnoDB supports page-level compression for tables that reside in file-per-table tablespaces. Page compression is enabled by specifying the COMPRESSION attribute with CREATE TABLE or ALTER TABLE. Supported Platforms Page compression requires sparse ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-standard-monitor.html
The Lock Monitor is the same as the Standard Monitor except that it includes additional lock information. Enabling either monitor for periodic output turns on the same output stream, but the stream includes extra information if the Lock Monitor is ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-sql-statements.html
row *************************** PLUGIN_NAME: ndbcluster PLUGIN_VERSION: 1.0 PLUGIN_STATUS: ACTIVE PLUGIN_TYPE: STORAGE ENGINE PLUGIN_TYPE_VERSION: 50729.0 PLUGIN_LIBRARY: NULL PLUGIN_LIBRARY_VERSION: NULL PLUGIN_AUTHOR: MySQL AB PLUGIN_DESCRIPTION: ... This section discusses several SQL statements that can prove useful in managing and monitoring a MySQL server that is connected to an NDB Cluster, and in some cases provide information about the cluster ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-hash.html
Partitioning by HASH is used primarily to ensure an even distribution of data among a predetermined number of partitions. To partition a table using HASH partitioning, it is necessary to append to the CREATE TABLE statement a PARTITION BY HASH ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-events-waits-current-table.html
END_EVENT_ID This column is set to NULL when the event starts and updated to the thread current event number when the event ends. If an event is produced from an instrument that has TIMED = NO, timing information is not collected, and TIMER_START, ...The table stores one row per thread showing the current status of the thread's most recent monitored wait event, so there is no system variable for configuring the table ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-processlist-table.html
row *************************** ID: 5 USER: event_scheduler HOST: localhost DB: NULL COMMAND: Daemon TIME: 137 STATE: Waiting on empty queue INFO: NULL *************************** 2. row *************************** ID: 9 USER: me HOST: ... Note The ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-statement-summary-tables.html
If no row has the statement digest value for the statement that just completed, and the table is full, the statistics for the statement that just completed are added to a special “catch-all” row with DIGEST = NULL, which is created if necessary.