---

ORDER BY子句
ORDER BY子句的语法为：
SELECT column1, SUM(column2)
[color=#FFFFFF'][/color]

FROM "list-of-tables"
ORDER BY "column-list" [ASC │ DESC];
[ ] = optional
ORDER BY是一个可选的子句，它允许你根据指定要order by的列来以上升或者下降的顺序来显示查询的结果。例如：
ASC = Ascending Order &;#8211; 这个是缺省的
[color=#FFFFFF'][/color]

DESC = Descending Order
下面举个例子：
[color=#FFFFFF'][/color]

SELECT employee_id, dept, name, age, salary
FROM employee_info
[color=#FFFFFF'][/color]

WHERE dept = 'Sales'
ORDER BY salary;
这条SQL语句将从employee_info表中列dept等于'Sales'选择employee_id,、dept、 name、 age和 salary，并且根据他们的salary按升序的顺序来列出检索结果。
如果你想对多列排序的话，那么在列与列之间要加上逗号，比如 ：
[color=#FFFFFF'][/color]

SELECT employee_id, dept, name, age, salary
FROM employee_info
WHERE dept = 'Sales'
[color=#FFFFFF'][/color]

ORDER BY salary, age DESC;
[color=#FFFFFF'][/color]