blob

问题 I am using Filetable in SQL 2016. let's take a look at some select commands below: 1. Select [stream_id] from <FileTable> 2. Select [stream_id], [name] from <FileTable> with (nolock) 3. Select [Stream_id], [name], file_stream.GetFileNamespacePath(0) as ntfsPath from <FileTable> with (nolock) I must use with(nolock) . if some one has opened a file such as a word document and I don't use 'NOLOCK', SQL returns only some records and then caught in a specific record and wouldn't return any records

问题 This is my actual code, i'm starting to using php and i want to know how to display a blob image on my website. But until now i can't find how to do it. This is my php code... $query=mysqli_query($link, "SELECT image, titulo, tecnica, medidas FROM upload "); $numrows = mysqli_num_rows($query); $posts = array(); if ($numrows != 0) { while ($row = mysqli_fetch_assoc($query)) { $post = new stdClass(); $post->image = '<img src="data:image/jpeg;base64,'.base64_encode($row['image']).'"/>'; $post-

问题 My problem is that the file saved is only opened with Google Pdf viewer and the pdf file has parts that are unclear, and adobe acrobat isn't opening it at all because the file is damaged. There is certainly a problem with the file created but I don't see it. And now the context: I use dbflow to handle sqlite db synchronization with the server. At the point of saving there is no error, and if I save the file directly to Downloads directory the file is being viewed okay. The blobs are saved in

问题 I have a Hibernate Entity: @Entity class Foo { //... @Lob public byte[] getBytes() { return bytes; } //.... } My VM is configured with a maximum heap size of 512 MB. When I try to persist an object which has a 75 MB large object, I get an OutOfMemoryError. The names of the methods in the stack trace (StringBuilder, ByteArrayBlobType.toLoggableString, pretty.Printer.toString) suggest that hibernate is trying to write a very large log message that contains my object. Am I correct about why

问题 I have an ISO file from MSFT that is a bootable DVD. I uploaded it to a storage account and stored it in a blob in Azure. Now I want to use it to create a VM. When I select to create a VM, I do not see that as an option. Any ideas how I can provision this? My laptop does not have enough resources to create a Hyper-V VM to then upload the disk. Thanks! 回答1: In Azure you do not have console access to a VM. The only way to access a VM is some kind of remote access like RDP, PowerShell Remoting,

问题 My response Headers is: HTTP/1.1 200 OK Content-Disposition: attachment; filename="file.docx" Accept-Ranges: bytes Cache-Control: public, max-age=0 Last-Modified: Thu, 26 Apr 2018 10:37:00 GMT ETag: W/"c61-16301871843" Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document Content-Length: 3169 Date: Thu, 26 Apr 2018 10:37:00 GMT Connection: keep-alive I tried this code, public download(id: string): Observable<Blob> { let headers = new Headers(); const _baseUrl =

问题 Due to reasons beyond my control, I am creating a .NET 2.0 assembly in which I load a SQLite database and retrieve some binary data from it. Specifically, PDF documents. The documentation for System.Data.SQLite.SQLiteDataReader.GetBlob(int i, bool ReadOnly) says: (emphasis mine) Retrieves the column as a System.Data.SQLite.SQLiteBlob object. This will not work for tables that were created WITHOUT ROWID -OR- if the query does not include the "rowid" column or one of its aliases -OR- if the

问题 I have this smartReadFile() php function that allows to play an audio stream from a file. How would you modify this function so it queries mysql database BLOB instead of reading a specific file? function smartReadFile($location, $filename, $mimeType = 'audio/octet-stream') { if (!file_exists($location)) { header ("HTTP/1.1 404 Not Found"); return; } $size = filesize($location); $time = date('r', filemtime($location)); $fm = @fopen($location, 'rb'); if (!$fm) { header ("HTTP/1.1 505 Internal

问题 I have an existing database containing some pictures in blob fields. For a web application I have to display them. What's the best way to do that, considering stress on the server and maintenance and coding efforts. I can think of the following: "Cache" the blobs to external files and send the files to the browser. Read them from directly the database every time it's requested. Some additionals facts: I cannot change the database and get rid of the blobs alltogether and only save file

问题 I am trying to upload a file via a form and then save in in SQL as a blob. I already have my form working fine, my database is fully able to take the blob and I have a controller that take the file, saves it in a local directory: [AcceptVerbs(HttpVerbs.Post)] public ActionResult FileUpload(int id, HttpPostedFileBase uploadFile) { //allowed types string typesNonFormatted = "text/plain,application/msword,application/pdf,image/jpeg,image/png,image/gif"; string[] types = typesNonFormatted.Split('