Provide Sequence like APIs, introducing map/filter functions, for example:

val depts = Departments
    .filter { it.location eq "Guangzhou" }
    .sortedBy { it.id }
    .take(2)
    .skip(2)
    .toList()

The code above will generate sql like:

select * 
from t_department t
where t.location = ?
order by t.id
limit 2, 2

It'll be great to have such APIs, It seems that we are operating a kotlin.Sequence, but actually, SQLs are generated and executed.