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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-mysqld.html
row *************************** Id: 1 User: system user Host: db: Command: Daemon Time: 1 State: Waiting for event from ndbcluster Info: NULL Important To participate in an NDB Cluster, the mysqld process must be started with both the options ...The ...To be used with NDB Cluster, mysqld needs to be built with support for the NDB storage engine, as it is in the precompiled binaries available from ...
https://dev.mysql.com/doc/refman/5.7/en/arithmetic-functions.html
If any of the operands of a +, -, /, *, % is a real or string value, the precision of the result is the precision of the operand with the maximum precision. (See Section 11.1, “Numeric Data Types”.) / Division: mysql> SELECT 3/5; -> 0.60 ...
https://dev.mysql.com/doc/refman/5.7/en/date-and-time-types.html
To convert strings in other orders to year-month-day order, the STR_TO_DATE() function may be useful. MySQL permits you to store a “zero” value of '0000-00-00' as a “dummy date.” In some cases, this is more convenient than using NULL values, ... The date and time data types for representing temporal values are DATE, TIME, DATETIME, TIMESTAMP, and ...
https://dev.mysql.com/doc/refman/5.7/en/fulltext-search-mecab.html
The mecab_rc_file option is not recognized by MySQL until the MeCaB parser plugin is installed but it must be set before attempting to install the MeCaB parser plugin. The built-in MySQL full-text parser uses the white space between words as a ...
https://dev.mysql.com/doc/refman/5.7/en/begin-end.html
Use of multiple statements requires that a client is able to send statement strings containing the ; statement delimiter. END syntax is used for writing compound statements, which can appear within stored programs (stored procedures and functions, ...
https://dev.mysql.com/doc/refman/5.7/en/connection-access.html
The client supplies the credentials specified in the row (for example, a password), as indicated by the authentication_string column. The authentication method implemented by the plugin that authenticates the client may or may not use the password ... When you attempt to connect to a MySQL server, the server accepts or rejects the connection based on these conditions: Your identity and whether you can verify it by supplying the proper ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-status-variables.html
If the group is operating in multi-primary mode, shows an empty string. MySQL 5.7 supports one status variable providing information about Group Replication. This variable is described here: group_replication_primary_member Shows the primary ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-optimizer-trace-table.html
MISSING_BYTES_BEYOND_MAX_MEM_SIZE Each remembered trace is a string that is extended as optimization progresses and appends data to it. The OPTIMIZER_TRACE table provides information produced by the optimizer tracing capability for traced ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-init-startup-configuration.html
(The MySQL server changes its current working directory to the data directory when it begins executing.) If you specify innodb_data_home_dir as an empty string, you can specify absolute paths for data files listed in the innodb_data_file_path value.
https://dev.mysql.com/doc/refman/5.7/en/replication-channels.html
To provide compatibility with previous versions, the MySQL server automatically creates on startup a default channel whose name is the empty string (""). In MySQL multi-source replication, a replica opens multiple replication channels, one for each ...