ST_Polygon,ST_PolyFromText,ST_PolygonFromText

将 WKT（Well Known Text）转换为相应的多边形内存形式。

语法

GEOMETRY ST_Polygon(VARCHAR wkt)

示例

MySQL > SELECT ST_AsText(ST_Polygon("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))"));
+------------------------------------------------------------------+
| st_astext(st_polygon('POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))')) |
+------------------------------------------------------------------+
| POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))                          |
+------------------------------------------------------------------+

关键词

ST_POLYGON,ST_POLYFROMTEXT,ST_POLYGONFROMTEXT,ST,POLYGON,POLYFROMTEXT,POLYGONFROMTEXT