SQLSTATE [42000]：語法錯誤或訪問衝突：1064您有

我使用PHP錯誤和PDOSQLSTATE [42000]：語法錯誤或訪問衝突：1064您有

這裏是我的代碼：

try { 
    $sql="LOCK TABLE appleid WRITE, appleid AS appleid1 READ;"; 
    $stmt = $GLOBALS['$connection']->prepare($sql); 
    $stmt->execute(); 
    $sql="SELECT MAX(num) FROM appleid;";//to know how many rows it has 
    $stmt = $GLOBALS['$connection']->prepare($sql); 
    $stmt->execute(); 
    $result=$stmt->fetch(); 
    $table_top=$result[0]; 

    if (empty($head)) $head = 1; 
    $check=$table_top - $head; 
    $check++;//number of available rows that are ready to use 

    if($check>=$this->apple_id_num) 
    { 
     $sql = "SELECT id,pass,en_b_y,en_b_m,en_b_d,sqa1,sqa2,sqa3 FROM 
     appleid AS appleid1 
     WHERE num>=$head LIMIT $this->apple_id_num ORDER BY `TimeStamp` 
     DESC;"; 
     $stmt = $GLOBALS['$connection']->prepare($sql); 
     $stmt->execute(); 
     $this->pre_head=$head;  
     $head=1+$head+$this->apple_id_num; 
     $sql="UNLOCK TABLES;"; 
     $this->num_rows = $stmt->rowCount(); 
     echo $stmt->rowCount(); 
    } 
} 
catch(PDOException $e) 
{ 
    echo $sql . "<br>" . $e->getMessage(); 
}

我得到這個錯誤：

SELECT id，pass，en_b_y，en_b_m，en_b_d，sqa1，sqa2，sqa3 FROM appleid AS appleid1 WHERE num> = 1 LIMIT 1 ORDER BY TimeStamp DESC; SQLSTATE [42000]：語法錯誤

或訪問衝突：1064您的SQL語法錯誤;檢查對應於您的MySQL服務器版本的權利語法使用近「ORDER BY TimeStamp DESC」在列2

我糊塗了，我不知道什麼是錯的這個查詢和手動如何解決它。

來源

2017-07-05 arteem

SELECT id,pass,en_b_y,en_b_m,en_b_d,sqa1,sqa2,sqa3 FROM 
     appleid AS appleid1 
     WHERE num>=$head ORDER BY `TimeStamp` 
     DESC LIMIT $this->apple_id_num ;

把你限制後orderby

來源

2017-07-05 11:00:52 Exprator

噢謝謝你:) – arteem

歡迎:) – Exprator

我是新的堆棧溢出我尋找像或某事，以表明它幫助我，但我無法找到如何接受答案？ – arteem

在limit子句前使用orderby子句。

$sql = "SELECT id,pass,en_b_y,en_b_m,en_b_d,sqa1,sqa2,sqa3 FROM 
appleid AS appleid1 
WHERE num>=$head ORDER BY `TimeStamp` DESC LIMIT $this->apple_id_num;";

來源

2017-07-05 10:59:35

變化

"SELECT id,pass,en_b_y,en_b_m,en_b_d,sqa1,sqa2,sqa3 FROM 
    appleid AS appleid1 
    WHERE num>=$head LIMIT $this->apple_id_num ORDER BY `TimeStamp` 
    DESC;";

到

"SELECT id,pass,en_b_y,en_b_m,en_b_d,sqa1,sqa2,sqa3 FROM 
    appleid AS appleid1 
    WHERE num>=$head LIMIT {$this->apple_id_num} ORDER BY `TimeStamp` 
    DESC;";

，因爲雙引號將不知道是否解析 - > apple_id_num作爲字符串或變量的一部分。

來源

2017-07-05 10:59:38 mighTY

我沒有測試過，但的timeStamp的聲音，如MySQL的保留字，

也許你可以試試這個領域的一個正確的報價，或最好的初步實踐變化該字段的名稱。

來源

2017-07-05 11:06:02

SQLSTATE [42000]：語法錯誤或訪問衝突：1064您有

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