code: func (s *SelectStatement) HasDimensionWildcard() bool {
  	for _, d := range s.Dimensions {
  		switch d.Expr.(type) {
  		case *Wildcard, *RegexLiteral:
  			return true
  		}
  	}
  
  	return false
  }
docs: // HasDimensionWildcard returns whether or not the select statement has
  // at least 1 wildcard in the dimensions aka `GROUP BY`.