Question

Matric No  Name                            Supervisor Name              Section
0924564    Nur Hidayah Mohammad Daud       |Che Siti Fatimah Che Hasan  1
1017951    Nur Akmal Hakeem Zainal Abidin  |Ali                         2
1017164    Qurratu 'Aini Zaini             |PHONE MYINT NAING           3
23         Eshrak                          |Ali                         2

这基本上就是表格中的内容。如何获取具有相同主管的学生排？提前谢谢。

Answer 1

你必须这样

SELECT  a.*
FROM    TableName a
    INNER JOIN
    (
        SELECT  Supervisor Name
        FROM    TableName
        GROUP   BY Supervisor Name
        HAVING  COUNT(*) > 1
    ) b ON  a.Supervisor Name= b.Supervisor Name

Answer 2

如果您只有一张桌子，那么您可以试试这个：

SELECT DISTINCT(Supervisor Name),Matric No,Name,Section FROM table_name

Answer 3

SELECT 
    Matric_No,
    Name,
    Supervisor_Name,
    Section,
    count(Section) as Total
FROM mytable
GROUP BY Section
Having Total > 1

使用php获取具有相同id的多个数据

3 个答案: