ORDER BYにASCを付けると、昇順になる。
postgresdb1=# SELECT * FROM profile ORDER BY age DESC; name | address | age --------+---------+----- Sato | Tokyo | 33 Ito | Osaka | 31 Taro | Tokyo | 30 Sasaki | Kyoto | 29 Jiro | Osaka | 28 Goro | Fukuoka | 26 Shiro | Sapporo | 26 Saburo | Nagoya | 26 (8 行) postgresdb1=# SELECT * FROM profile ORDER BY age ASC; name | address | age --------+---------+----- Goro | Fukuoka | 26 Saburo | Nagoya | 26 Shiro | Sapporo | 26 Jiro | Osaka | 28 Sasaki | Kyoto | 29 Taro | Tokyo | 30 Ito | Osaka | 31 Sato | Tokyo | 33 (8 行) postgresdb1=#
デフォルトがASCなので、いらないっちゃあいらないけど。