Question

 var temp = [];

 function addSong(id) {

     var button = $('#' + id + ''); // Button that triggered the modal
     var file = button.data('file'); // Extract info from data-* attributes
     var thumb = button.data('thumb'); // Extract info from data-* attributes
     var trackName = button.data('track_name'); // Extract info from data-* attributes
     var trackArtist = button.data('track_artist'); // Extract info from data-* attributes
     var trackAlbum = button.data('track_album'); // Extract info from data-* attributes

     var tempObj = {
         file: file,
         thumb: thumb,
         trackName: trackName,
         trackArtist: trackArtist,
         trackAlbum: trackAlbum
     };

     temp.push(tempObj);

     $("#player").jAudio({
         playlist: temp
     });
 }

pic变量仅用于测试。无论如何，我可以确认用户名=：用户名是真的，这只是重置语句的问题。正如我所说，除了声明本身之外，没有任何问题。我在mssql 2008数据库上使用php7。感谢您的投入！

EDIT 用这个替换代码，仍然不起作用：

$query = $database->prepare("SELECT * FROM Users WHERE username=:username SET profilePicturePath=:pic");
$query->bindParam(":pic", $_FILES['profilePic']['name']);
$pic = "hellow";
$query->bindParam(":username", $pic);
$query->execute();

从用户中选择所有作品，但下面的内容也不起作用：

$query = $database->prepare("SELECT * FROM Users WHERE username=@username    SET profilePicturePath=@pic");
$pic = "hellow";
$query->bindParam("@pic", $pic);
$query->bindParam("@username", $_SESSION['Username']);
$query->execute();

Answer 1

尝试查询

"UPDATE Users SET profilePicturePath=@pic WHERE username=@username"

Answer 2

根据MSDN页面，SQL Server的SELECT语法不允许在SELECT语句中进行更新：https://msdn.microsoft.com/en-us/library/ms189499(v=sql.110).aspx。你必须做两个单独的陈述，一个用于选择：

$query = $database->prepare("SELECT * FROM Users WHERE username=:username");
$pic = "hellow";
$query->bindParam(":username", $pic);
$query->execute();

和另一个更新：

$query = $database->prepare("UPDATE Users SET profilePicturePath=:pic where username = :username");
$query->bindParam(":pic", $_FILES['profilePic']['name']);
$query->bindParam(":username", $pic);
$query->execute();

此外，要使更新生效，请确保目标数据库中的用户具有UPDATE权限。您可以通过将用户添加到目标数据库中的db_datawrite数据库角色来授予更新和插入权限：

USE target_database; ALTER ROLE db_datawriter ADD MEMBER user_name;

MSSQL UPDATE SELECT和SET Query无法正常工作

2 个答案: