ST_LineFromText,ST_LineStringFromText
description
Syntax
GEOMETRY ST_LineFromText(VARCHAR wkt)
将一个WKT（Well Known Text）转化为一个Line形式的内存表现形式
example
mysql> SELECT ST_AsText(ST_LineFromText("LINESTRING (1 1, 2 2)"));
+---------------------------------------------------------+
| st_astext(st_geometryfromtext('LINESTRING (1 1, 2 2)')) |
+---------------------------------------------------------+
| LINESTRING (1 1, 2 2) |
+---------------------------------------------------------+keywords
ST_LINEFROMTEXT,ST_LINESTRINGFROMTEXT,ST,LINEFROMTEXT,LINESTRINGFROMTEXT