Adding a dynamic query builder with more options

[Geowan]

In the current query builder i can perform something like

const users = await User.query().select('first_name','last_name','username','status','email')
                      .orderBy(inputdata.order_by, inputdata.mode)

In some situations you may need to run the orderBy only if inputdata.orderby is not null.

So am thinking of something like

    const users =  User.query().select('first_name','last_name','username','status','email')
     if(inputdata.order_by){
         users.orderBy(inputdata.order_by, inputdata.mode)
     }

In the documentation i cannot find a similar way to achieve the above? Is this already there?