W3cubDocs

/MariaDB

ST_DIMENSION

Syntax

ST_Dimension(g)
Dimension(g)

Description

Returns the inherent dimension of the geometry value g. The result can be

Dimension	Definition
`-1`	empty geometry
`0`	geometry with no length or area
`1`	geometry with no area but nonzero length
`2`	geometry with nonzero area

ST_Dimension() and Dimension() are synonyms.

Examples

SELECT Dimension(GeomFromText('LineString(1 1,2 2)'));
+------------------------------------------------+
| Dimension(GeomFromText('LineString(1 1,2 2)')) |
+------------------------------------------------+
|                                              1 |
+------------------------------------------------+

Content reproduced on this site is the property of its respective owners, and this content is not reviewed in advance by MariaDB. The views, information and opinions expressed by this content do not necessarily represent those of MariaDB or any other party.

© 2019 MariaDB
Licensed under the Creative Commons Attribution 3.0 Unported License and the GNU Free Documentation License.
https://mariadb.com/kb/en/st_dimension/