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https://dev.mysql.com/doc/refman/5.7/en/keyring-functions-plugin-specific.html
For each keyring plugin-specific function, this section describes its purpose, calling sequence, and return value. For information about general-purpose keyring functions, see Section 6.4.4.8, “General-Purpose Keyring Key-Management Functions”.
https://dev.mysql.com/doc/refman/5.7/en/gis-wkt-functions.html
These functions take as arguments a Well-Known Text (WKT) representation and, optionally, a spatial reference system identifier (SRID). Other functions provide type-specific construction functions for construction of geometry values of each ...
https://dev.mysql.com/doc/refman/5.7/en/gis-property-functions.html
Each function that belongs to this group takes a geometry value as its argument and returns some quantitative or qualitative property of the geometry. Such functions return NULL if the argument is of an incorrect geometry type. For example, the ...
https://dev.mysql.com/doc/refman/5.7/en/spatial-relation-functions.html
The functions described in this section take two geometries as arguments and return a qualitative or quantitative relation between them. MySQL implements two sets of functions using function names defined by the OpenGIS specification. There is also ...One set tests the relationship between two geometry values using precise object shapes, the other set uses object minimum bounding rectangles ...
https://dev.mysql.com/doc/refman/5.7/en/gis-mysql-specific-functions.html
MySQL provides a set of useful nonstandard functions for creating geometry values. The functions described in this section are MySQL extensions to the OpenGIS specification. These functions produce geometry objects from either WKB values or ...If ...
https://dev.mysql.com/doc/refman/5.7/en/gis-polygon-property-functions.html
Functions in this section return properties of Polygon or MultiPolygon values. This function processes geometry collections by computing the centroid point for components of highest dimension in the collection. Such components are extracted and ...
https://dev.mysql.com/doc/refman/5.7/en/show-create-function.html
SHOW CREATE FUNCTION func_name This statement is similar to SHOW CREATE PROCEDURE but for stored functions.
https://dev.mysql.com/doc/refman/5.7/en/show-function-code.html
SHOW FUNCTION CODE func_name This statement is similar to SHOW PROCEDURE CODE but for stored functions.
https://dev.mysql.com/doc/refman/5.7/en/show-function-status.html
SHOW FUNCTION STATUS [LIKE 'pattern' | WHERE expr] This statement is similar to SHOW PROCEDURE STATUS but for stored functions.
https://dev.mysql.com/doc/refman/5.7/en/spatial-function-reference.html
The following table lists each spatial function and provides a short description of each one.