Question

我的数据：

id    a       b     price
1     2.00    1.00  2.50
2     2.00    2.00  3.00
3     3.00    1.00  4.50
4     3.00    2.00  2.50
5     3.00    3.00  3.00
6     4.00    1.00  4.50

我的问题是 如何从a列和b列而不是id列中使用“之间”的sql获取ID 2到4的数据

2     2.00    2.00  3.00
3     3.00    1.00  4.50
4     3.00    2.00  2.50

我的代码sql（但不起作用）：

sql = "SELECT * FROM data_table  WHERE (( BETWEEN (a = 2.00, b  = 2.00 ) AND ( a = 3.00, b = 2.00  ))";

Answer 1

不确定为什么要使查询变得复杂。试试这个

Select * from data_table  where id between 2 and 4

Answer 2

两个列都可以使用BETWEEN。

sql = "SELECT * FROM data_table  WHERE a BETWEEN 2 AND 3 AND b BETWEEN 2 AND 4";

只需确保在两个约束之间都必须使用AND和OR。

Answer 3

尝试一下：

SELECT * FROM data_table WHERE id BETWEEN (SELECT id FROM data_table WHERE a=2.00 AND b=2.00)  AND (SELECT id FROM data_table WHERE a=3.00 AND b=2.00)

Answer 4

Select * from data_table where (a > 1 and a < 5 ) or (b > 1 and b < 5)

或者您可以限制使用以下内容

Select * from data_table where (a > 1 and a < 5 ) and (b > 1 and b < 5)

Answer 5

如果我正确理解了您的问题，则希望获取A和B列的值在2到4之间的行

尝试此查询

SELECT *
FROM data_table 
WHERE (a BETWEEN 2 AND 4)
AND (b BETWEEN 2 AND 4)

在2列之间有陈述的SQL

5 个答案: