如何将类型geometry(MultiLineString,4326)的字段geom_one转换成geometry(MultiLineStringZM,4326)类型的字段geom_two? 当我尝试使用ST_Force_3D(geom_one)插入,它产生以下错误: ERROR: Column has M dimension but geometry does not
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我有以下的表称为locations有以下栏目: latitude longitude 现在我想查询中所有条目在给定纬度/长点的特定半径内。 SELECT * FROM locations
WHERE ST_DWithin(
ST_MakePoint(longitude, latitude),
ST_MakePoint(-0.63098, 51.18291),
100
我的问题是类似这样的问题How to create a PostgreSQL partitioned sequence? 在我的情况下,我使用此代码 SELECT geom, gid, path,nextval('seq_oid1') as seq_id,
rank() OVER (PARTITION BY gid ORDER BY gid) AS pos
FROM (
SELECT DIST