Question

我想在sqlite数据库中存储大文件（超过100mb）。我注意到，它的性能不佳。我是否必须将文件存储在本地文件夹中，还是必须重写我的代码？

       Shared Sub BlobToFile(ByVal Blob As Byte(), ByVal file As String)
        Dim MyData() As Byte = Blob
        Dim K As Long
        K = UBound(MyData)
        Dim fs As New FileStream _
         (file, FileMode.Create, _
          FileAccess.Write)
        fs.Write(MyData, 0, K)
        fs.Close()
        MyData = Nothing
        K = Nothing
    End Sub
    Shared Function FileToBlob(ByVal Filepath As String) As Byte()
        Dim fs As New FileStream _
     (Filepath, FileMode.Open, _
      FileAccess.Read)
        Dim MyData(fs.Length) As Byte
        fs.Read(MyData, 0, fs.Length)
        fs.Close()
        Return MyData
    End Function
'Then I Do this:
Dim x As New Sqliteparameter With {.Name ="@file", .value=Filetoblob("C:\Testfile.zip"), .DbType.Binary}
Dim y As New SqliteCommand With {.Commandtext = "INSERT INTO FILES(File) Values(@file);"}
y.Parameters.add(x)
y.Executenonquery()

THX

Answer 1

通常最好不要将大型文件存储在数据库中，除非支持它，例如使用mssql server。我建议只是将文件的位置存储在数据库中，并将文件存储在某种文件系统中。

SQLite：用于存储大文件的BLOB？

1 个答案: