The Ultimate Guide to High Availability with MariaDB

Comments - ST_X

6 years, 5 months ago Andrew D
Re: ST_X

ST_X(point) returns a scalar number, not a Geometry type. Do not try to cast it from a WKB to Text or it will return NULL without errors or warnings!

The same is probably true for ST_Y(), ST_Z(), and ST_M().

Example:

MariaDB [db]> select ST_Y(GeomFromText('POINT(-1 1504310400)'));
+--------------------------------------------+
|                                 1504310400 |
+--------------------------------------------+

MariaDB [db]> select ST_AsText(ST_Y(GeomFromText('POINT(-1 1504310400)')));
+-------------------------------------------------------+
| NULL                                                         |
+-------------------------------------------------------+
 
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