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https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html
TRUNCATE TABLE can be used with Performance Schema summary tables, but the effect is to reset the summary columns to 0 or NULL, not to remove rows. Logically, TRUNCATE TABLE is similar to a DELETE statement that deletes all rows, or a sequence of ...
https://dev.mysql.com/doc/refman/5.7/en/mysqlimport.html
--character-sets-dir=dir_name Command-Line Format --character-sets-dir=path Type String Default Value [none] The directory where character sets are installed. --debug[=debug_options], -# [debug_options] Command-Line Format --debug[=debug_options] ...
https://dev.mysql.com/doc/refman/5.7/en/dynamic-format.html
Dynamic-format tables have these characteristics: All string columns are dynamic except those with a length less than four. Each row is preceded by a bitmap that indicates which columns contain the empty string (for string columns) or zero (for ...
https://dev.mysql.com/doc/refman/5.7/en/json-utility-functions.html
This section documents utility functions that act on JSON values, or strings that can be parsed as JSON values. The value supplied must be a JSON value or a valid string representation of a JSON value. Special characters in string scalars and key ...JSON_PRETTY() prints out a JSON value in a format that is easy to ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-replica.html
--replicate-do-db=db_name Command-Line Format --replicate-do-db=name Type String Creates a replication filter using the name of a database. --replicate-ignore-db=db_name Command-Line Format --replicate-ignore-db=name Type String Creates a ... This ...
https://dev.mysql.com/doc/refman/5.7/en/events-privileges.html
If you inspect the MySQL error log (hostname.err), you can see that the event is executing, but the action it is attempting to perform fails: 2013-09-24T12:41:31.261992Z 25 [ERROR] Event Scheduler: [jon@ghidora][cookbook.e_store_ts] INSERT command ... To enable or disable the execution of scheduled events, it is necessary to set the value of the global event_scheduler system ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-metrics-table.html
row *************************** NAME: dml_inserts SUBSYSTEM: dml COUNT: 3 MAX_COUNT: 3 MIN_COUNT: NULL AVG_COUNT: 0.046153846153846156 COUNT_RESET: 3 MAX_COUNT_RESET: 3 MIN_COUNT_RESET: NULL AVG_COUNT_RESET: NULL TIME_ENABLED: 2014-12-04 14:18:28 ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-fulltext-index.html
If you want to create your own FTS_DOC_ID column, the column must be defined as BIGINT UNSIGNED NOT NULL and named FTS_DOC_ID (all uppercase), as in the following example: Note The FTS_DOC_ID column does not need to be defined as an AUTO_INCREMENT ... Full-text indexes are created on text-based columns (CHAR, VARCHAR, or TEXT columns) to speed up queries and DML operations on data contained within those ...
https://dev.mysql.com/doc/refman/5.7/en/partitioning-key.html
Unlike the case with other partitioning types, columns used for partitioning by KEY are not restricted to integer or NULL values. This is a known issue in MySQL 5.7 which is addressed in MySQL 8.0, where this permissive behavior is deprecated, and ... Partitioning by key is similar to partitioning by hash, except that where hash partitioning employs a user-defined expression, the hashing function for key partitioning is supplied by the MySQL ...
https://dev.mysql.com/doc/refman/5.7/en/create-user.html
The plugin name can be a quoted string literal or an unquoted name. An 'auth_string' value specifies account credentials, either as a cleartext (unencrypted) string or hashed in the format expected by the authentication plugin associated with the ...