temptable without defaults

[IstvanSafar]

finally I figured out how should be implemented

[PawelGerr]

Thx, I need some time to analyze the changes.

[IstvanSafar]

Probably we can add excluded property list for defaults or option for skipping PK-s defaults, or both of the tree options.

[PawelGerr]

Yes, I would prefer more flexibel approach, similar to KeyProperties or PropertiesToUpdate:

var options = new SqlServerBulkUpdateOptions
{
   KeyProperties = IEntityPropertiesProvider.Include<Customer>(c => c.Id),
   PropertiesToUpdate = IEntityPropertiesProvider.Include<Customer>(c => new { c.FirstName, c.LastName }),

   // new
   SkipIdentityColumnDefinition = IEntityPropertiesProvider.Include<Customer>(c => c.Id),
   SkipDefaultValueDefinition = IEntityPropertiesProvider.Include<Customer>(c => c.Id)
};

await ctx.BulkUpdateAsync(new[] { customer }, options);

A shortcut is possible as well

await ctx.BulkUpdateAsync(new[] { customer },
                          propertiesToUpdate: c => new { c.FirstName, c.LastName },
                          skipIdentityColumnDefinition: c => c.Id,
                          skipDefaultValueDefinition: c => c.Id);