检查两列之间的输入值

Question

以下是我的数据库架构。

id   from  to    value
1    1     10    5
2    11    NULL  10   -- I have stored 'NULL' for any value GREATER THAN 11

现在我必须选择value，其中input like (4)位于from和to之间。

我知道可以通过此查询实现。

SELECT *
FROM   TABLE
WHERE  4 BETWEEN `from` AND `to`

但是如何在input 15之间选择价值？

SELECT *
FROM   TABLE
WHERE  15 BETWEEN `from` AND `to`

在这种情况下，上述查询无效，因为to列有null。

更新

如果columen to可以有任何值，那么它将包含null。

现在如果输入值为15，则查询应返回第2行，因为15 is not between 1 and 10 in 1st row和15大于11且to值可以大于11

Answer 1

SELECT *
FROM   TABLE
WHERE  15 BETWEEN coalesce(`from`,15) AND coalesce(`to`,15);

Answer 2

使用布尔组合

select *
    from table
    where (to is not null and 15 between from and to)
        or (to is null and 15 >= from)

Answer 3

SELECT *
FROM   TABLE
WHERE  15 BETWEEN `from` AND IF_NULL(`to`,15)