context.Wallet.Include(w => w.WalletM2M)
.Where(w => w.WalletM2M.AccountId == CurrentUser.AccountId && w.WalletM2M.IsAdmin == true).ToList();INSERT INTO c (aID, bID,date)
SELECT a.ID, b.ID,NOW()
FROM A a, A b
WHERE a.Name='Вася'
AND b.Name='Петя';