Question
I'm having some files saved into a MSSQL database using EF core with a structure like
public class UploadedFile
{
public int Id { get; set; }
public string Source { get; set; }
public byte[] Content { get; set; }
I want to be able to load the list of "UploadedFiles" from database without actually reading the Content column from the database. So I can't really use
await _context.UploadedFiles.ToListAsync();
I believe I can use something like bellow with a stored procedure.
_context.Set<UploadedFiles>().FromSql("dbo.spGetUploadedFiles")
But, is there any other way that would not involve using a stored procedure? I can't un-map the column in the model as I need it for insert/read individual items. Thank you.
Accepted Answer
Use a projection:
var results = _context.UploadedFiles.Select(uf => new { uf.Id, uf.Source });
Popular Answer
You can basically use .Select({..) to specify which columns you want to return:
public class MyItem
{
public int Id { get; set; }
public string Source { get; set; }
}
var data = _context.UploadedFiles
.Select(p => new MyItem
{
Id = p.Id,
Source = p.Source
})
.ToListAsync();
This way you tell EF to generate the select only for those columns and nothing more. You can also select an anonymous object like .Select(p => new { ... }) if you feel like so.
I strongly recommend using strong types.
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