SQL BETWEEN 操作符
BETWEEN 操作符用於選取介於兩個值之間的數據范圍內的值。
SQL BETWEEN 操作符
BETWEEN 操作符選取介於兩個值之間的數據范圍內的值。 這些值可以是數值、文本或者日期。
SQL BETWEEN 語法
SELECT column_name(s)
FROM table_name
WHERE column_name BETWEEN value1 AND value2;
FROM table_name
WHERE column_name BETWEEN value1 AND value2;
演示數據庫
在本教程中,我們將使用w3big 樣本數據庫。
下面是選自"Websites" 表的數據:
+----+--------------+---------------------------+-------+---------+ | id | name | url | alexa | country | +----+--------------+---------------------------+-------+---------+ | 1 | Google | https://www.google.cm/ | 1 | USA | | 2 | 淘宝 | https://www.taobao.com/ | 13 | CN | | 3 | 本教程 | http://www.w3big.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 | +----+---------------+---------------------------+-------+---------+
BETWEEN 操作符實例
下面的SQL 語句選取alexa 介於1 和20 之間的所有網站:
實例
SELECT * FROM Websites
WHERE alexa BETWEEN 1 AND 20;
WHERE alexa BETWEEN 1 AND 20;
執行輸出結果:
NOT BETWEEN 操作符實例
如需顯示不在上面實例範圍內的網站,請使用NOT BETWEEN:
實例
SELECT * FROM Websites
WHERE alexa NOT BETWEEN 1 AND 20;
WHERE alexa NOT BETWEEN 1 AND 20;
執行輸出結果:
帶有IN 的BETWEEN 操作符實例
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:
實例
SELECT * FROM Websites
WHERE (alexa BETWEEN 1 AND 20)
AND NOT country IN ('USA', 'IND');
WHERE (alexa BETWEEN 1 AND 20)
AND NOT country IN ('USA', 'IND');
執行輸出結果:
帶有文本值的BETWEEN 操作符實例
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:
實例
SELECT * FROM Websites
WHERE name BETWEEN 'A' AND 'H';
WHERE name BETWEEN 'A' AND 'H';
執行輸出結果:
帶有文本值的NOT BETWEEN 操作符實例
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:
實例
SELECT * FROM Websites
WHERE name NOT BETWEEN 'A' AND 'H';
WHERE name NOT BETWEEN 'A' AND 'H';
執行輸出結果:
示例表
下面是"access_log" 網站訪問記錄表的數據,其中:
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)
本教程使用到的access_log表SQL文件: access_log.sql 。
帶有日期值的BETWEEN 操作符實例
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:
實例
SELECT * FROM access_log
WHERE date BETWEEN '2016-05-10' AND '2016-05-14';
WHERE date BETWEEN '2016-05-10' AND '2016-05-14';
執行輸出結果:
請注意,在不同的數據庫中,BETWEEN操作符會產生不同的結果! 因此,請檢查您的數據庫是如何處理BETWEEN操作符! |