SQL - 刪除重複的結果

Question

我有一個表，看起來像這樣：

name  | surname<br> 
John  | John<br> 
Jessica | Madson<br> 

我有這樣的查詢：

SELECT * FROM table WHERE name LIKE '%j%' OR surname LIKE '%j%' 

我能得到什麼：

John John 
John John 
Jessica Madson 

什麼我想要：

John John 
Jessica Madson 

我該如何擺脫重複結果？

Answer 1

使用DISTINCT：

SELECT DISTINCT name, surname 
FROM yourtable 
WHERE name LIKE '%j%' OR surname LIKE '%j%' 

Answer 2

嘗試：

SELECT DISTINCT name, surname FROM table WHERE name LIKE '%j%' OR surname LIKE '%j%' 

Answer 3

你也可以使用組由

SELECT name, surname 
FROM yourtable 
WHERE name LIKE '%j%' OR surname LIKE '%j%' 
GROUP BY name, surname