Procedural elements like loops are not part of the SQL language and can only be used inside the body of a procedural language function, ... ... <看更多>

Learn about For Loops in PostgreSQL. ... Tutorial 49 - For Loop in PostgreSQL. 18,518 views18K views. May ... ... <看更多>

Though not specifically GIS related, I'm working on something similar, so here's a quick solution. Assuming you're using psycopg2 and ... ... <看更多>

PostgreSQL trigger: loop through the columns of the source table - gist:3081382. ... <看更多>