Question

大家好，我在表中有以下一行作为示例

id      shop_id     start_time      end_time
1       21          10:00           11:00

，我想检查表中是否存在开始时间和结束时间我正在使用以下查询，但无法正常工作，我在哪里错了？

select * 
  from usr_booking 
 where shop_id='21' 
   and start_time between '10:10:00' and '11:01:00' 
    or end_time   between '10:10:00' and '11:01:00'

Answer 1

您需要明确区分shop_id和时间范围上的检查：

SELECT *
FROM usr_booking
WHERE
    shop_id = 21 AND
    (start_time BETWEEN '10:10:00' AND '11:01:00' OR
     end_time BETWEEN '10:10:00' AND '11:01:00');

MySQL中的AND运算符比OR运算符具有更高的优先级。因此，您当前的查询实际上是这样评估的：

SELECT *
FROM usr_booking
WHERE
    (shop_id = 21 AND
     start_time BETWEEN '10:10:00' AND '11:01:00') OR
     end_time BETWEEN '10:10:00' AND '11:01:00';

很显然，这与您可能想要的逻辑不同。

Answer 2

尝试按此类查询进行分组

select * from usr_booking where shop_id='21' AND ((start_time between '10:10:00' and '11:01:00') OR (end_time between '10:10:00' and '11:01:00'))

添加多余的括号进行分组。

Answer 3

尝试此查询：

SELECT *
FROM usr_booking 
Where shop_id='21' AND start_time BETWEEN '10:10:00' AND '11:01:00' 
AND end_time BETWEEN '10:10:00' AND '11:01:00'

Answer 4

尝试一下

SELECT * FROM usr_booking WHERE shop_id=21 AND (start_time BETWEEN '10:10:00' AND '11:01:00') OR (end_time BETWEEN '10:10:00' AND '11:01:00')

Answer 5

如果给定时间'10：10：00'和'11：01：00'，并且您想知道该时间段是否重叠，那么逻辑是：

select b.* 
from usr_booking 
where shop_id = 21 and -- do not use single quotes for numeric constants (assuming `shop_id` is a number
      end_time > '10:10:00' and
      start_time < '11:01:00';

对于重叠的间隔，between是不合适的。

SQL Select语句，其中“与”或“或”无法正常工作

5 个答案: