Distance between 2 POINTs in Postgis in srid 4326 in metres

Question

This is probably a simple question, but I\'m not very good at PostGIS and don\'t fully grok all of this.

Basically I have a table (nodes) with a POINT colum

Answer 1

Old question but you just have to cast like this: ST_Distance(p.geom::geography, u.geom::geography) where p and u are alias for two tables