爲最高工資

Question

1 shreya cpn 10000 
2 shreya cpna 100000 
3 shreya cpnaa 20000 
4 preeti buld 30000 
5 preeti bulda 20000 
6 preeti buldan 25000 
1 sushil mal 30000 
1 sushil male 10000 
1 sushil maleg 15000 
9 abc ada 15000 

不同的名稱的SQL查詢，這是我的表... ，這是我的查詢select * from stu where sal in (select MAX(sal)from stu group by name) 和ANS是 -

2 shreya cpna 100000 
4 preeti buld 30000 
1 sushil mal 30000 
1 sushil maleg 15000 
9 abc ada 15000 
10 sss sfsfs 12000 

其顯示2蘇希爾...，我想唯一不同的名稱爲... plzz給我建議...

Answer 1

如果你需要在你只輸出name和salary列，你可以簡單地嘗試這種代碼：

select name, MAX(sal) from stu group by name 

您可以使用正在分組的選定列以及具有聚合函數的其他列。

如果您需要所有其他列，您將不得不使用join。

select s1.* 
from stu s1 
join (select name, MAX(sal) as sal from stu group by name) as s2 
on s1.name = s2.name and s1.sal = s2.sal