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https://dev.mysql.com/doc/refman/5.7/en/create-user.html
CREATE USER [IF NOT EXISTS] user [auth_option] [, user [auth_option]] ... [REQUIRE {NONE | tls_option [[AND] tls_option] ...}] [WITH resource_option [resource_option] ...] [password_option | lock_option] ... It enables authentication, SSL/TLS, ...
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/spatial-geojson-functions.html
This section describes functions for converting between GeoJSON documents and spatial values. Feature and FeatureCollection objects are not supported, except that geometry objects are extracted from them. MySQL also supports a native JSON data type ...
https://dev.mysql.com/doc/refman/5.7/en/delete.html
For example, to delete rows that exist in t1 that have no match in t2, use a LEFT JOIN: DELETE t1 FROM t1 LEFT JOIN t2 ON t1.id=t2.id WHERE t2.id IS NULL; The syntax permits .* after each tbl_name for compatibility with Access. DELETE is a DML ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-ft-index-cache-table.html
The INNODB_FT_INDEX_CACHE table provides token information about newly inserted rows in a FULLTEXT index. Before querying it, set the value of the innodb_ft_aux_table system variable to the name (including the database name) of the table that ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-ft-index-table-table.html
The INNODB_FT_INDEX_TABLE table provides information about the inverted index used to process text searches against the FULLTEXT index of an InnoDB table. Before querying it, set the value of the innodb_ft_aux_table system variable to the name ...
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/create-table-generated-columns.html
Generated column definitions have this syntax: col_name data_type [GENERATED ALWAYS] AS (expr) [VIRTUAL | STORED] [NOT NULL | NULL] [UNIQUE [KEY]] [[PRIMARY] KEY] [COMMENT 'string'] AS (expr) indicates that the column is generated and defines the ...
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/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 ...