https://dev.mysql.com/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/gis-linestring-property-functions.html
Unless otherwise specified, functions in this section handle their arguments as follows: If any argument is NULL or any geometry argument is an empty geometry, the return value is NULL. ST_IsClosed() returns 0 if ls is not closed, and NULL if ls is ...You can extract particular points of a LineString, count the number of points that it contains, or obtain its ...
https://dev.mysql.com/group-replication-enterprise-backup.html
MySQL Enterprise Backup is a commercially-licensed backup utility for MySQL Server, available with MySQL Enterprise Edition. This section explains how to back up and subsequently restore a Group Replication member using MySQL Enterprise Backup. The ...
https://dev.mysql.com/innodb-columns-table.html
PRTYPE The InnoDB “precise type”, a binary value with bits representing MySQL data type, character set code, and nullability. If the default value is NULL or was not specified, this column reports NULL. An explicitly specified non-NULL default ...For related usage information and examples, see Section 15.15.3, “InnoDB INFORMATION_SCHEMA Schema Object ...
https://dev.mysql.com/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/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/mysql-cluster-sql-statements.html
row *************************** PLUGIN_NAME: ndbcluster PLUGIN_VERSION: 1.0 PLUGIN_STATUS: ACTIVE PLUGIN_TYPE: STORAGE ENGINE PLUGIN_TYPE_VERSION: 80020.0 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/mysql-options.html
The argument is a pointer to a null-terminated string naming the key. If the mysql argument is non-NULL, the call sets the session system variable value for that session. If mysql is NULL, the call sets the global system variable value. If the mysql ... int mysql_options(MYSQL *mysql, enum mysql_option option, const void *arg) Can be used to set extra connect options and affect behavior for a ...
https://dev.mysql.com/mysql-real-escape-string-quote.html
The result is placed in the to argument, followed by a terminating null byte. (In the worst case, each character may need to be encoded as using two bytes, and there must be room for the terminating null byte.) When mysql_real_escape_string_quote() ... unsigned long mysql_real_escape_string_quote(MYSQL *mysql, char *to, const char *from, unsigned long length, char quote) This function creates a legal SQL string for use in an SQL ...
https://dev.mysql.com/mysql-real-escape-string.html
The result is placed in the to argument, followed by a terminating null byte. (In the worst case, each character may need to be encoded as using two bytes, and there must be room for the terminating null byte.) When mysql_real_escape_string() ...
