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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/sys-sys-get-config.html
Given a configuration option name, returns the option value from the sys_config table, or the provided default value (which may be NULL) if the option does not exist in the table. If sys_get_config() returns the default value and that value is ...
https://dev.mysql.com/doc/refman/5.7/en/gis-mysql-specific-functions.html
If any argument is not a proper WKB or geometry representation of the proper object type, the return value is NULL. If the number of arguments is less than two, the return value is NULL. If any argument does not represent a LinearRing (that is, not ... MySQL provides a set of useful nonstandard functions for creating geometry ...
https://dev.mysql.com/doc/refman/5.7/en/loading-tables.html
For missing values (such as unknown sexes or death dates for animals that are still living), you can use NULL values. Suppose that Diane gets a new hamster named “Puffball.” You could add a new record using an INSERT statement like this: mysql> ...Suppose that your pet records can be described as shown ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbd-definition.html
Consider this table definition: CREATE TABLE example ( a INT NOT NULL, b INT NOT NULL, c INT NOT NULL, PRIMARY KEY(a), UNIQUE(b) ) ENGINE=NDBCLUSTER; For each record, there are 12 bytes of data plus 12 bytes overhead. The [ndbd] and [ndbd default] ...
https://dev.mysql.com/doc/refman/5.7/en/replication-options-binary-log.html
Prior to MySQL 5.7.2, this option caused any statements containing fully qualified table names not to be logged if there was no default database specified (that is, when SELECT DATABASE() returned NULL). Otherwise, if the table has a unique key all ... Startup Options Used with Binary Logging System Variables Used with Binary Logging You can use the mysqld options and system variables that are described in this section to affect the operation of the binary log as well as to control which statements are written to the binary ...
https://dev.mysql.com/doc/refman/5.7/en/string-type-syntax.html
CHAR(0) is also quite nice when you need a column that can take only two values: A column that is defined as CHAR(0) NULL occupies only one bit and can take only the values NULL and '' (the empty string). A string object that can have only one ...
https://dev.mysql.com/doc/refman/5.7/en/account-names.html
MySQL account names consist of a user name and a host name, which enables creation of distinct accounts for users with the same user name who connect from different hosts. This section describes the syntax for account names, including special ...
https://dev.mysql.com/doc/refman/5.7/en/audit-log-logging-configuration.html
This section describes how to configure audit logging characteristics, such as the file to which the audit log plugin writes events, the format of written events, whether to enable log file compression and encryption, and space management. The ...
https://dev.mysql.com/doc/refman/5.7/en/blackhole-storage-engine.html
This results in the replica attempting to replay two insert log entries using the same value for the primary key column, and so replication fails. The BLACKHOLE storage engine acts as a “black hole” that accepts data but throws it away and does ...