https://dev.mysql.com/alter-table.html
Changing the definition of a spatial column to remove the SRID attribute. ALTER TABLE tbl_name [alter_specification [, alter_specification] ...] [partition_options] alter_specification: table_options | ADD [COLUMN] col_name column_definition [FIRST ...
https://dev.mysql.com/json-functions.html
A set of spatial functions for operating on GeoJSON values is also available. The functions described in this section perform operations on JSON values. For discussion of the JSON data type and additional examples showing how to use these ...
https://dev.mysql.com/server-system-variables.html
have_geometry YES if the server supports spatial data types, NO if not. (These are used for spatial indexes in MyISAM tables.) have_ssl YES if mysqld supports SSL connections, NO if not. The MySQL server maintains many system variables that ...
https://dev.mysql.com/json.html
A set of spatial functions for operating on GeoJSON values is also available. The JSON data type provides these advantages over storing JSON-format strings in a string column: Automatic validation of JSON documents stored in JSON columns. JSON ...
https://dev.mysql.com/implicit-commit.html
The statements listed in this section (and any synonyms for them) implicitly end any transaction active in the current session, as if you had done a COMMIT before executing the statement. Most of these statements also cause an implicit commit after ...
https://dev.mysql.com/descending-indexes.html
Explicitly specified ASC and DESC designators for HASH, FULLTEXT, and SPATIAL indexes results in an error. MySQL supports descending indexes: DESC in an index definition is no longer ignored but causes storage of key values in descending order.
https://dev.mysql.com/range-optimization.html
MySQL does not support merging multiple ranges for the range access method for spatial indexes. To work around this limitation, you can use a UNION with identical SELECT statements, except that you put each spatial predicate in a different SELECT.
https://dev.mysql.com/miscellaneous-functions.html
The fifth number is an IEEE 802 node number that provides spatial uniqueness. The function return value and type are the same as the return value and type of its argument, but the function result is not checked for the ONLY_FULL_GROUP_BY SQL mode.
https://dev.mysql.com/opengis-geometry-model.html
In this model, each geometric object has the following general properties: It is associated with a spatial reference system, which describes the coordinate space in which the object is defined. The set of geometry types proposed by OGC's SQL with ...
https://dev.mysql.com/optimize-table.html
OPTIMIZE TABLE does not sort R-tree indexes, such as spatial indexes on POINT columns. OPTIMIZE TABLE reorganizes the physical storage of table data and associated index data, to reduce storage space and improve I/O efficiency when accessing the ...
