(mysql.info) mysql-gis-conformance-and-compatibility

Info Catalog

(mysql.info) optimizing-spatial-analysis

(mysql.info) spatial-extensions

 
 16.7 MySQL Conformance and Compatibility
 ========================================
 
 MySQL does not yet implement the following GIS features:
 
    * Additional Metadata Views
 
      OpenGIS specifications propose several additional metadata views.
      For example, a system view named `GEOMETRY_COLUMNS' contains a
      description of geometry columns, one row for each geometry column
      in the database.
 
    * The OpenGIS function `Length()' on `LineString' and
      `MultiLineString' currently should be called in MySQL as
      `GLength()'
 
      The problem is that there is an existing SQL function `Length()'
      that calculates the length of string values, and sometimes it is
      not possible to distinguish whether the function is called in a
      textual or spatial context. We need either to solve this somehow,
      or decide on another function name.
 

Info Catalog

(mysql.info) optimizing-spatial-analysis

(mysql.info) spatial-extensions