sql server number函数 sqlserver now函数

SQL NOW() 函数

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NOW() 函数

NOW() 函数return 当前系统的日期和时间。

SQL NOW() 语法

SELECT NOW() FROM table_name;

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演示database

在本教程中，咱们将使用 liulianjiangcsdn 样本database。

下面是选自 “Websites” 表的数据：

+----+--------------+---------------------------+-------+---------+
    | id | name         | url                       | alexa | country |
    +----+--------------+---------------------------+-------+---------+
    | 1  | Google       | https://www.google.cm/    | 1     | USA     |
    | 2  | 淘宝          | https://www.taobao.net/   | 13    | CN      |
    | 3  | liulianjiangcsdn教程      | http://blog.csdn.net/qq441540598/    | 4689  | CN      |
    | 4  | 微博          | http://weibo.net/         | 20    | CN      |
    | 5  | Facebook     | https://www.facebook.net/ | 3     | USA     |
    | 7  | stackoverflow | http://stackoverflow.net/ |   0 | IND     |
    +----+---------------+---------------------------+-------+---------+

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SQL NOW() 实例

下面的 SQL 语句从 “Websites” 表中选取 name，url，及当天日期：

实例
     SELECT name, url, Now() AS date
    FROM Websites; 
     执行以上 SQL 输出结果请在输出结果查看
+------------------+------------------------------+---------------------+
| name             | url                          | date                |
+------------------+------------------------------+---------------------+
| Google           | https://www.google.cm/       | 2022-12-16 10:50:34 |
| 淘宝             | https://www.taobao.net/      | 2022-12-16 10:50:34 |
| liulianjiang教程 | http://www.liulianjiang.net/ | 2022-12-16 10:50:34 |
| 微博             | http://weibo.net/            | 2022-12-16 10:50:34 |
| Facebook         | https://www.facebook.net/    | 2022-12-16 10:50:34 |
| 百度             | https://www.baidu.net/       | 2022-12-16 10:50:34 |
| stackoverflow    | http://stackoverflow.net/    | 2022-12-16 10:50:34 |
+------------------+------------------------------+---------------------+