MySql查詢從樹表中獲取記錄

Question

什麼查詢獲取記錄結果在同一個表中？

我的表是這樣的：

id uid name status parent 
1 1t01 AAA Teacher root 
2 2s01 CCC Student 1t01 
3 3t02 BBB Teacher root 
4 4s02 DDD Student 3t02 
5 5s03 EEE Student 1t01 

在那裏我有名稱：DDD，我贏了顯示老師的名字：BBB

什麼查詢得到老師的名字：BBB

解決

答案來自Martin

SqlFiddle

Answer 1

你可以加入本身的表，就像這樣：

SELECT p.name teacher 
FROM table_name t 
INNER JOIN table_name p 
    ON p.uid = t.parent 
WHERE t.name = 'BBB'; 

Answer 2

select * from table Name where name="BBB" 

Answer 3

聯袂同臺會這麼做：

SELECT t2 .name as teacherName 
FROM t1 
JOIN t1 AS t2 ON t1.parent = t2.uid 
WHERE t1.name = 'BBB'; 

Answer 4

您的查詢應該是這樣的：

SELECT t2.name 
FROM yourtable t1, yourtable t2 
WHERE t1.parent = t2.uid 
AND t1.name = 'DDD'; 

替換yourtable與您的實際表名稱。