text: module.exports = {
      getMenuById:`
                  select * from menus where id = ?
                  `,
                      //别忘了字段前,加前缀,否则都被覆盖了
      getRoleMenus:   `
                      select menus.* from menus , role_menu
                      where menus.id = role_menu.menu_id
                      and role_menu.role_id = ? and menus.pid = ?
                      `,
      create:         `
                      insert into menus(pid,name,uri,menu_icon,
                                          level,create_time,create_user)
                      values(?,?,?,?,?,now(),?)
                      `
  }
  