SELECT * FROM shoelace_obsolete WHERE sl_avail = 0;
insert into shoelace values ('sl9', 0, 'pink', 35.0, 'inch', 0.0);
insert into shoelace values ('sl10', 1000, 'magenta', 40.0, 'inch', 0.0);
-SELECT * FROM shoelace_obsolete;
+SELECT * FROM shoelace_obsolete ORDER BY sl_len_cm;
sl_name | sl_avail | sl_color | sl_len | sl_unit | sl_len_cm
------------+----------+------------+--------+----------+-----------
sl9 | 0 | pink | 35 | inch | 88.9
insert into shoelace values ('sl9', 0, 'pink', 35.0, 'inch', 0.0);
insert into shoelace values ('sl10', 1000, 'magenta', 40.0, 'inch', 0.0);
-SELECT * FROM shoelace_obsolete;
+SELECT * FROM shoelace_obsolete ORDER BY sl_len_cm;
SELECT * FROM shoelace_candelete;
DELETE FROM shoelace WHERE EXISTS