SELECT -------------------------------------------create table--------------------------------------------------------------------------------------------------------- 'DROP TABLE IF EXISTS fc.'||func||' CASCADE; CREATE TABLE IF NOT EXISTS fc.'||func||' (' || string_agg(format('%I',cname) || ' ' || dtype,', ' ORDER BY opos ASC) || ', PRIMARY KEY ('||string_agg(format('%I',cname),', ') FILTER (WHERE fkey = func)||'));' AS ddl, -------------------------------------------populate table------------------------------------------------------------------------------------------------------- ---need to add a clause to exclude where the key is null 'INSERT INTO fc.'||func||' SELECT DISTINCT ' || string_agg(format('%I',cname),', ' ORDER BY opos ASC) || ' FROM '||tname||' WHERE '|| string_agg(format('%I',cname)||' IS NOT NULL ',' AND ') FILTER (WHERE fkey = func)||' ON CONFLICT DO NOTHING' AS pop, -------------------------------------------setup foreign keys--------------------------------------------------------------------------------------------------- 'ALTER TABLE fc.live ADD CONSTRAINT fk_'||func||' FOREIGN KEY ('||string_agg(format('%I',cname),', ') FILTER (WHERE fkey = func)||') REFERENCES fc.'||func||' ('|| string_agg(format('%I',cname),', ') FILTER (WHERE fkey = func)||')' AS fk FROM fc.target_meta GROUP BY tname ,func HAVING string_agg(cname,', ') FILTER (WHERE fkey = func) <> ''