[13]SQL BETWEEN 操作符
阿新 • • 發佈:2017-11-11
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[13]SQL BETWEEN 操作符
BETWEEN 操作符用於選取介於兩個值之間的數據範圍內的值。
BETWEEN 操作符選取介於兩個值之間的數據範圍內的值。這些值可以是數值、文本或者日期。
面是選自 "Websites" 表的數據:
+----+--------------+---------------------------+-------+---------+
| id | name | url | alexa | country |
+----+--------------+---------------------------+-------+---------+
| 1 | Google | https://www.google.cm/ | 1 | USA |
| 2 | 淘寶 | https://www.taobao.com/ | 13 | CN |
| 3 | 菜鳥教程 | http://www.runoob.com/ | 4689 | CN |
| 4 | 微博 | http://weibo.com/ | 20 | CN |
| 5 | Facebook | https://www.facebook.com/ | 3 | USA |
| 7 | stackoverflow | http://stackoverflow.com/ | 0 | IND |
+----+---------------+---------------------------+-------+---------+
SELECT * FROM Websites WHERE alexa BETWEEN 1 AND 20;
如需顯示不在上面實例範圍內的網站,請使用 NOT BETWEEN:
SELECT * FROM Websites WHERE alexa NOT BETWEEN 1 AND 20;
下面的 SQL 語句選取alexa介於 1 和 20 之間但 country 不為 USA 和 IND 的所有網站:
SELECT * FROM Websites WHERE (alexa BETWEEN 1 AND 20) AND NOT country IN (‘USA‘, ‘IND‘);
下面的 SQL 語句選取 name 以介於 ‘A‘ 和 ‘H‘ 之間字母開始的所有網站:
SELECT * FROM Websites WHERE name BETWEEN ‘A‘ AND ‘H‘;
下面的 SQL 語句選取 name 不介於 ‘A‘ 和 ‘H‘ 之間字母開始的所有網站:
SELECT * FROM Websites WHERE name NOT BETWEEN ‘A‘ AND ‘H‘;
示例表
下面是 "access_log" 網站訪問記錄表的數據,其中:
- aid:為自增 id。
- site_id:為對應 websites表的網站 id。
- count:訪問次數。
- date:為訪問日期。
mysql> SELECT * FROM access_log; +-----+---------+-------+------------+ | aid | site_id | count | date | +-----+---------+-------+------------+ | 1 | 1 | 45 | 2016-05-10 | | 2 | 3 | 100 | 2016-05-13 | | 3 | 1 | 230 | 2016-05-14 | | 4 | 2 | 10 | 2016-05-14 | | 5 | 5 | 205 | 2016-05-14 | | 6 | 4 | 13 | 2016-05-15 | | 7 | 3 | 220 | 2016-05-15 | | 8 | 5 | 545 | 2016-05-16 | | 9 | 3 | 201 | 2016-05-17 | +-----+---------+-------+------------+ 9 rows in set (0.00 sec)
下面的 SQL 語句選取 date 介於 ‘2016-05-10‘ 和 ‘2016-05-14‘ 之間的所有訪問記錄:
SELECT * FROM access_log WHERE date BETWEEN ‘2016-05-10‘ AND ‘2016-05-14‘;
[13]SQL BETWEEN 操作符