Change column order in table of postgres

Question

I am trying to change the column order in the table of postgressql. But I didn\'t get any clue or answer. I think this functionality is add in new version. I am using postgres

Answer 1

You would have to drop and re-create the table or at least the lastname column for that:

BEGIN;
ALTER TABLE atable RENAME lastname TO oldcol;
ALTER TABLE atable ADD lastname text NOT NULL;
UPDATE atable SET lastname = oldcol;
ALTER TABLE atable DROP oldcol;
COMMIT;

But the exercise is pretty pointless, since you can always determine the order in which you get the columns in the SELECT clause. You aren't using SELECT *, are you? That would be problematic for other reasons as well; it is only useful for ad-hoc queries.