SQL学习笔记(三)
BETWEEN 操作符
BETWEEN操作符用于选取介于两个值之间的数据范围内的值。
这些值可以是数值、文本或者日期
SELECT column_name(s)
FROM table_name
WHERE column_name BETWEEN value1 AND value2;
SELECT * FROM `faction_info2` WHERE faction_level BETWEEN 1 AND 2
NOT BETWEEN 代表着不在实例范围内的
SELECT * FROM `faction_info2` WHERE faction_level NOT BETWEEN 1 AND 2
带有IN的BETWEEN操作符
SELECT * FROM `faction_info2` WHERE (faction_level NOT BETWEEN 1 AND 2) AND faction_name NOT IN ("test","哈")
带有文本值的BETWEEN操作符实例
SELECT * FROM `faction_info2` WHERE faction_name BETWEEN "你" AND "我"
这里是按该文字开始的
带有文本值的NOT BETWEEN操作符实例
SELECT * FROM `faction_info2` WHERE faction_name NOT BETWEEN "你" AND "我"
带有日期值的BETWEEN操作实例
SELECT * FROM `faction_info2` WHERE create_time BETWEEN "2022-01-01" AND "2022-04-25"
当然时间戳会用得更多一些,可以直接使用时间戳转换
请注意,在不同的数据库中,BETWEEN 操作符会产生不同的结果!
在某些数据库中,BETWEEN 选取介于两个值之间但不包括两个测试值的字段。
在某些数据库中,BETWEEN 选取介于两个值之间且包括两个测试值的字段。
在某些数据库中,BETWEEN 选取介于两个值之间且包括第一个测试值但不包括最后一个测试值的字段。
因此,请检查您的数据库是如何处理 BETWEEN 操作符!
SQL 别名