geom转换为经纬度
SELECT
	st_x ( geom ) AS lon,
	st_y ( geom ) AS lat
FROM
	buct_monitoring_stations

SQL:postgresql点geom转换为经纬度、POINT_学习

geom转换为POINT
SELECT
	ST_asText ( geom ) 
FROM
	buct_monitoring_stations 

SQL:postgresql点geom转换为经纬度、POINT_学习_02