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https://dev.mysql.com/doc/refman/8.0/en/gis-class-geometry.html
It is a noninstantiable class but has a number of properties, described in the following list, that are common to all geometry values created from any of the Geometry subclasses. Geometry Properties A geometry value has the following properties: Its ...
https://dev.mysql.com/doc/refman/8.0/en/gis-geometry-class-hierarchy.html
The geometry classes define a hierarchy as follows: Geometry (noninstantiable) Point (instantiable) Curve (noninstantiable) LineString (instantiable) Line LinearRing Surface (noninstantiable) Polygon (instantiable) GeometryCollection (instantiable) ...
https://dev.mysql.com/doc/refman/8.0/en/geometry-well-formedness-validity.html
For geometry values, MySQL distinguishes between the concepts of syntactically well-formed and geometrically valid. Spatial import functions that parse WKT or WKB values raise an error for attempts to create a geometry that is not syntactically ...
https://dev.mysql.com/doc/refman/8.0/en/opengis-geometry-model.html
The set of geometry types proposed by OGC's SQL with Geometry Types environment is based on the OpenGIS Geometry Model. In this model, each geometric object has the following general properties: It is associated with a spatial reference system, ...
https://dev.mysql.com/doc/refman/8.0/en/spatial-operator-functions.html
OpenGIS proposes a number of functions that can produce geometries. These functions support all argument type combinations except those that are inapplicable according to the Open Geospatial Consortium specification. MySQL also implements certain ...
https://dev.mysql.com/doc/refman/8.0/en/gis-general-property-functions.html
The functions listed in this section do not restrict their argument and accept a geometry value of any type. Unless otherwise specified, functions in this section handle their geometry arguments as follows: If any argument is NULL, the return value ...
https://dev.mysql.com/doc/refman/8.0/en/gis-format-conversion-functions.html
MySQL supports the functions listed in this section for converting geometry values from internal geometry format to WKT or WKB format, or for swapping the order of X and Y coordinates. There are also functions to convert a string from WKT or WKB ...
https://dev.mysql.com/doc/refman/8.0/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 14.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/8.0/en/spatial-function-reference.html
The following table lists each spatial function and provides a short description of each one.
https://dev.mysql.com/doc/refman/8.0/en/cast-functions.html
Table 14.15 Cast Functions and Operators Name Description Deprecated BINARY Cast a string to a binary string 8.0.27 CAST() Cast a value as a certain type CONVERT() Cast a value as a certain type Cast functions and operators enable conversion of ...