private static async Task DoBulkInsertIntoTempTableAsync(DemoDbContext ctx)
{
var customersToInsert = new Customer(Guid.NewGuid(), "First name", "Last name");
await using var tempTable = await ctx.BulkInsertIntoTempTableAsync(new[] { customersToInsert });
var insertedCustomer = await tempTable.Query.FirstAsync(c => c.Id == customersToInsert.Id);
Console.WriteLine($"Customer from temp table: {insertedCustomer.Id}");
}