雙WHERE NOT語句SQL

Question

我有這個疑問：

$query = "SELECT pic_square, 
       name, 
       highest_score, 
       num_tries, 
       avg_total 
      FROM users 
     WHERE NOT played_game = '0' 
     ORDER BY avg_total DESC"; 

當我選擇pic_square，name，highest_score，num_tries和avg_total從所有用戶

沒有自己玩過的遊戲設定'' 0 ''。

---

我想補充的另一個條件，所以我只選擇用戶說：

• 沒有他們played_game設置爲'0 ''
• DO沒有他們的名字空

PS：該名稱不能爲空，它只能爲空，我不能更改數據庫結構本身。

那麼，如何添加這些雙WHERE不能在一起？

Answer 1

WHERE NOT (played_game = '0' or name = '') 

或

WHERE played_game <> '0' and name <> '' 

Answer 2

$query = "SELECT pic_square,name,highest_score,num_tries,avg_total FROM users 
    WHERE NOT (played_game = '0' OR name IS NULL OR name='') 
    ORDER BY avg_total DESC"; 

Answer 3

$query = "SELECT pic_square,name,highest_score,num_tries,avg_total FROM users 
    WHERE played_game <> '0' AND name <> '' ORDER BY avg_total DESC"; 

簡單地改變條件像

where played_game <> '0' AND name <> '' 

Answer 4

您可以使用此查詢：

$query = "SELECT pic_square, 
       name, 
       highest_score, 
       num_tries, 
       avg_total 
      FROM users 
      WHERE NOT played_game = '0' 
      AND IFNULL(name,'') <> '' 
     ORDER BY avg_total DESC"; 

使用IFNULL你會得到肯定NULL值和空值的處理一樣。

Answer 5

$query = "SELECT pic_square,name,highest_score,num_tries,avg_total 
      FROM users 
      WHERE played_game != '0' 
      AND name NOT NULL 
      ORDER BY avg_total DESC";