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12.16.3 Functions That Create Geometry Values from WKT Values

https://dev.mysql.com/doc/refman/5.7/en/gis-wkt-functions.html

MPolyFromText(wkt [, srid]), MultiPolygonFromText(wkt [, srid]) ST_MPolyFromText(), ST_MultiPolygonFromText(), MPolyFromText(), and MultiPolygonFromText() are synonyms. MPolyFromText() and MultiPolygonFromText() are deprecated; expect them to be ...

MySQL Glossary

https://dev.mysql.com/doc/refman/5.7/en/glossary.html

R R-tree A tree data structure used for spatial indexing of multi-dimensional data such as geographical coordinates, rectangles or polygons. These terms are commonly used in information about the MySQL database server. This glossary originated as a ...

9.3 Keywords and Reserved Words

https://dev.mysql.com/doc/refman/5.7/en/keywords.html

Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Reserved words are permitted as ...

11.4.2.6 Surface Class

https://dev.mysql.com/doc/refman/5.7/en/gis-class-surface.html

Polyhedral surfaces are formed by “stitching” together simple surfaces along their boundaries, polyhedral surfaces in three-dimensional space may not be planar as a whole. The OpenGIS specification defines a simple Surface as a geometry that ...

11.4.2.2 Geometry Class

https://dev.mysql.com/doc/refman/5.7/en/gis-class-geometry.html

The dimensions of MultiPoint, MultiLineString, and MultiPolygon objects are the same as the dimensions of the elements they consist of. It is a noninstantiable class but has a number of properties, described in the following list, that are common to ...