Syntax error (missing operator) in query expression 'emp.emp_id ='.

private void btn_Delete_Click(object sender, EventArgs e)
        {
           
            if (txt_mobile_no.Text == "")
            {
                DialogResult Case = MessageBox.Show(".رقم الجوال فارغة", "سجل فارغ", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {
                EmpID();
                string sql = "DELETE emp.*, emplogin.* FROM tbl_employee_details as [emp] LEFT JOIN tbl_user_login_access as [emplogin] ON emp.emp_id = emplogin.emp_id where emp.emp_id =" + eid + "";
                Execute(sql);
                DialogResult save2 = MessageBox.Show(".يتم حذف تفاصيل بنجاح", "حفظ", MessageBoxButtons.OK, MessageBoxIcon.Information);
                BEmployee();
                EmployeeID();
                BindLogin();
                Clear();
            }
        }

public void Execute(String sql)
      {
          cmd = new OleDbCommand(sql, conn);
          cmd.ExecuteNonQuery();
      }