Sql 如何在postgres DB中从geom列中获取lat和long

我在postgres DB中有一个名为“building_footprints”的表

请参阅所附图片

并在下面运行查询表

SELECT row_to_json(fc) FROM (
SELECT 'FeatureCollection' As type, array_to_json(array_agg(f)) As features FROM (
    SELECT 'Feature' As type, ST_AsGeoJSON(lg.the_geom)::json As geometry,
    row_to_json((gid, the_geom)) As properties FROM building_footprints As lg
) As f) As fc

查询结果为：

我想将坐标

值（坐标）：[[[[530500.00039933545400.008863266]，）

转换为lat/long。

试试这个

SELECT id, the_geom , ST_X(the_geom::geometry), ST_Y(the_geom::geometry) FROM building_footprints;

您应该安装postgis扩展

请参阅：

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