mysqlorderby对select查询结果集排序

来源：聚游网

mysql order by 语法：

SELECT field1, field2,...fieldN table_name1, table_name2...
ORDER BY field1, [field2...] [ASC [DESC]]

说明：

你可以使用任何字段来作为排序的条件，从而返回排序后的查询结果。

你可以设定多个字段来排序。

你可以使用 ASC 或 DESC 关键字来设置查询结果是按升序或降序排列。默认情况下，它是按升排列。

你可以添加 WHERE...LIKE 子句来设置条件。

mysql order by实例

首先创建一张表：

mysql> CREATE TABLE Employee(
 -> id int,
 -> first_name VARCHAR(15),
 -> last_name VARCHAR(15),
 -> start_date DATE,
 -> end_date DATE,
 -> salary FLOAT(8,2),
 -> city VARCHAR(10),
 -> description VARCHAR(15)
 -> );
Query OK, 0 rows affected (0.03 sec)

向表中插入若干数据：

mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values (1,'Jason', 'Martin', '19960725', '20060725', 1234.56, 'Toronto', 'Programmer');
Query OK, 1 row affected (0.02 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(2,'Alison', 'Mathews', '19760321', '19860221', 6661.78, 'Vancouver','Tester');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(3,'James', 'Smith', '19781212', '19900315', 6544.78, 'Vancouver','Tester');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(4,'Celia', 'Rice', '19821024', '19990421', 2344.78, 'Vancouver','Manager');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(5,'Robert', 'Black', '19840115', '19980808', 2334.78, 'Vancouver','Tester');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(6,'Linda', 'Green', '19870730', '19960104', 4322.78,'New York', 'Tester');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(7,'David', 'Larry', '19901231', '19980212', 77.78,'New York','Manager');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> insert into Employee(id,first_name, last_name, start_date, end_Date,salary,City, Description)
 ->values(8,'James', 'Cat', '19960917', '20020415', 1232.78,'Vancouver', 'Tester');
Query OK, 1 row affected (0.02 sec)

查询数据并对结果集排序：

mysql> SELECT first_name, start_date FROM employee ORDER BY start_date;
+------------+------------+
| first_name | start_date |
+------------+------------+
| Alison | 1976-03-21 |
| James | 1978-12-12 |
| Celia | 1982-10-24 |
| Robert | 1984-01-15 |
| Linda | 1987-07-30 |
| David | 1990-12-31 |
| Jason | 1996-07-25 |
| James | 1996-09-17 |
+------------+------------+
8 rows in set (0.02 sec)