ST_AsText,ST_AsWKT

description

Syntax

VARCHAR ST_AsText(GEOMETRY geo)

将一个几何图形转化为WKT（Well Known Text）的表示形式

example

1. mysql> SELECT ST_AsText(ST_Point(24.7, 56.7));
2. +---------------------------------+
3. | st_astext(st_point(24.7, 56.7)) |
4. +---------------------------------+
5. | POINT (24.7 56.7)               |
6. +---------------------------------+

keyword

ST_ASTEXT,ST_ASWKT,ST,ASTEXT,ASWKT