fields = execute("SELECT id, name FROM fields WHERE name IN (%s)" \
% ','.join('%r' % (field,) for field in fields)).fetchall()
if parent == 0: # get all files
fields = execute("SELECT id, name FROM fields WHERE name IN (%s)" \
% ','.join('%r' % (field,) for field in fields)).fetchall()
if parent == 0: # get all files