oly})\n\nST_Centroid() and Centroid() are synonyms. For more information, see\nthe description of ST_Centroid().\n\nURL: http://dev.mysql.com/doc/refman/5.7/en/gis-polygon-property-functions.html\n\n','','http://dev.mysql.com/doc/refman/5.7/en/gis-polygon-property-functions.html');