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SELECT st_centroid(the_geom), road."id" FROM "public".roads
我将如何处理质心但将其作为 kml 返回?基本上我想要线绳的中心和道路的名称。有没有办法将道路质心的纬度返回为 x & y
SELECT ST_AsKML(ST_Centroid(the_geom)),id FROM 道路