func (this *builder) VisitUnnest(node *algebra.Unnest) (interface{}, error) {
_, err := node.Left().Accept(this)
if err != nil {
return nil, err
}
unnest := NewUnnest(node)
this.subChildren = append(this.subChildren, unnest)
return nil, nil
}
func NewUnnest(term *algebra.Unnest) *Unnest {
return &Unnest{
term: term,
alias: term.Alias(),
}
}