Re: What is a DO block for?

I find the do block a nice enhancement;  for example, it allows me to do many administration tasks quickly without adding a procedure to the database. Imagine that I need to truncate all the tables in a schema for development purposes in order to fill it with test data.   I could do like this

DO $$
DECLARE
table_name text;
BEGIN
FOR table_name IN SELECT tablename FROM pg_tables WHERE schemaname = 'development' LOOP
EXECUTE 'TRUNCATE ' || table_name ||' CASCADE ;' ;
END LOOP;
END;
$$;