SQL查询仅在字段等于value时选择最高ID

Question

表＆＃39;部分＆＃39;：

我正在尝试创建执行以下操作的查询：

SELECT stop 
FROM section 
WHERE the id is the highest and the section is JPS_44-300-A-y10-1-1-1-H.

在上表中，结果将是1900HA080909。我怎么能用SQL做到这一点？

Answer 1

您可以使用LIMIT功能执行此操作：

SELECT stop 
FROM section 
WHERE section='JPS_44-300-A-y10-1-1-1-H'
ORDER BY ID DESC
LIMIT 1;

Answer 2

请尝试：

select * From YourTable a
where a.ID=(select MAX(ID) from YourTable b where b.Section=a.Section)

Answer 3

SELECT stop FROM section
INNER JOIN (SELECT MAX(ID) FROM section WHERE section = 'JPS_44-300-A-y10-1-1-1-H') AS Tbl
 ON section.ID = Tbl.ID

Answer 4

尝试那样

SELECT a.stop FROM section a WHERE a.id IN (
     SELECT MAX(id) FROM section b
    WHERE b.section = 'JPS_44-300-A-y10-1-1-1-H'
)