SQL多查询特定

Question

我有一个非常具体的问题，没有什么我可以在网上找到能够告诉我我的错误在哪里。

我想一次传递两个mysql查询。另外，他们完美的工作，但他们一起失败。我试着加入，加入;和multi_queries方法。一切都失败。

现在我坚持这样的代码：

// data insertion 
$sql = "INSERT INTO comments (id, name, email, comment, article_id, date) VALUES ('$id', '$name', '$email', '$comment', '$article_id', '$date')"; 
$sql.= "DELETE FROM comments_validation WHERE id = $id"; 

if ($conn->multi_query($sql) === TRUE) { 
    header('Location: http://url.com/index.php?success'); 

} else { 
    echo "Error: " . $sql . "<br>" . $conn->error; 
} 

和错误：

Error: INSERT INTO comments (id, name, email, comment, article_id, date) VALUES ('some values')DELETE FROM comments_validation WHERE id = 'some other value' You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELETE FROM comments_validation WHERE id = 'some other value' at line 1

提前感谢！

Answer 1

你必须在这个SQL语句

$sql = "INSERT INTO comments (id, name, email, comment, article_id, date) VALUES ('$id', '$name', '$email', '$comment', '$article_id', '$date');"; 
                                       ^here             

Answer 2

请在多查询每个查询的末尾添加分号作为字符串末尾添加;。

// data insertion 
$sql = "INSERT INTO comments (id, name, email, comment, article_id, date) VALUES ('$id', '$name', '$email', '$comment', '$article_id', '$date');"; 
$sql.= "DELETE FROM comments_validation WHERE id = $id"; 

if ($conn->multi_query($sql) === TRUE) { 
    header('Location: http://url.com/index.php?success'); 

} else { 
    echo "Error: " . $sql . "<br>" . $conn->error; 
}