学习笔记之Nearest-Neighbour Searching with PostGIS

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PostgreSQL: Documentation: 10: 7.8. WITH Queries (Common Table Expressions)

• https://www.postgresql.org/docs/10/static/queries-with.html#QUERIES-WITH-SELECT
• WITH provides a way to write auxiliary statements for use in a larger query. These statements, which are often referred to as Common Table Expressions or CTEs, can be thought of as defining temporary tables that exist just for one query. Each auxiliary statement in a WITHclause can be a SELECT, INSERT, UPDATE, or DELETE; and the WITH clause itself is attached to a primary statement that can also be a SELECT, INSERT, UPDATE, or DELETE.

Calculate min distance between points in PostGIS - Geographic Information Systems Stack Exchange

• https://gis.stackexchange.com/questions/52792/calculate-min-distance-between-points-in-postgis

ST_Distance

• http://postgis.net/docs/manual-2.4/ST_Distance.html

学习笔记之Nearest-Neighbour Searching with PostGIS

标签：rap   let   str   stack   unit   code   select   postgre   less   

原文地址：https://www.cnblogs.com/pegasus923/p/8973586.html