如何從表中找到上一個和下一個id記錄

Question

如何從給定id的表中知道prev id值和下一個id值？

像IA具有ID = 5表A recod然後我想知道價值的上一個ID和值一張ID

Answer 1

如果id是一個自動增加INT場，

SELECT * FROM tablename WHERE id < 5 ORDER by ID DESC LIMIT 0,1; 

SELECT * FROM tablename WHERE id > 5 ORDER by ID ASC LIMIT 0,1; 

應做這項工作。

Answer 2

也許像...

SELECT MAX(id) AS previous 
    FROM my_table 
    WHERE id < 5; 

和

SELECT MIN(id) AS next 
    FROM my_table 
    WHERE id > 5; 

會得到你想要的東西。

Answer 3

SELECT * FROM table WHERE id = (SELECT min(id) FROM table WHERE id > id) 
SELECT * FROM table WHERE id = (SELECT max(id) FROM table WHERE id < id)