MySQL中BETWEEN子句的用法详解
可以使用IN子句来代替相结合的“大于等于和小于等于”的条件。
要了解BETWEEN子句考虑的EMPLOYEE_TBL表有以下记录：
mysql>SELECT*FROMemployee_tbl; +------+------+------------+--------------------+ |id|name|work_date|daily_typing_pages| +------+------+------------+--------------------+ |1|John|2007-01-24|250| |2|Ram|2007-05-27|220| |3|Jack|2007-05-06|170| |3|Jack|2007-04-06|100| |4|Jill|2007-04-06|220| |5|Zara|2007-06-06|300| |5|Zara|2007-02-06|350| +------+------+------------+--------------------+ 7rowsinset(0.00sec)
现在，假设根据上表想获取记录条件daily_typing_pages超过170，等于和小于300。这可以使用如下条件>=和<=
mysql>SELECT*FROMemployee_tbl ->WHEREdaily_typing_pages>=170AND ->daily_typing_pages<=300; +------+------+------------+--------------------+ |id|name|work_date|daily_typing_pages| +------+------+------------+--------------------+ |1|John|2007-01-24|250| |2|Ram|2007-05-27|220| |3|Jack|2007-05-06|170| |4|Jill|2007-04-06|220| |5|Zara|2007-06-06|300| +------+------+------------+--------------------+ 5rowsinset(0.03sec)
同样可以实现使用BETWEEN子句如下：
mysql>SELECT*FROMemployee_tbl ->WHEREdaily_typing_pagesBETWEEN170AND300; +------+------+------------+--------------------+ |id|name|work_date|daily_typing_pages| +------+------+------------+--------------------+ |1|John|2007-01-24|250| |2|Ram|2007-05-27|220| |3|Jack|2007-05-06|170| |4|Jill|2007-04-06|220| |5|Zara|2007-06-06|300| +------+------+------------+--------------------+ 5rowsinset(0.03sec)
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