Documentation Home
MySQL 5.7 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 38.0Mb
PDF (A4) - 38.1Mb
PDF (RPM) - 37.4Mb
HTML Download (TGZ) - 10.2Mb
HTML Download (Zip) - 10.2Mb
HTML Download (RPM) - 8.9Mb
Man Pages (TGZ) - 216.6Kb
Man Pages (Zip) - 329.5Kb
Info (Gzip) - 3.5Mb
Info (Zip) - 3.5Mb
Excerpts from this Manual

MySQL 5.7 Reference Manual  /  ...  /  Geometry Property Functions

12.15.7 Geometry Property Functions

Each function that belongs to this group takes a geometry value as its argument and returns some quantitative or qualitative property of the geometry. Some functions restrict their argument type. Such functions return NULL if the argument is of an incorrect geometry type. For example, the ST_Area() polygon function returns NULL if the object type is neither Polygon nor MultiPolygon.


User Comments
Sign Up Login You must be logged in to post a comment.