orm.go
func (idx *Index) SetColumnAttrs(colIDOrKey interface{}, attrs map[string]interface{}) *PQLBaseQuery {
	colStr, err := formatIDKey(colIDOrKey)
	if err != nil {
		return NewPQLBaseQuery("", idx, err)
	}
	attrsString, err := createAttributesString(attrs)
	if err != nil {
		return NewPQLBaseQuery("", idx, err)
	}
	q := fmt.Sprintf("SetColumnAttrs(%s,%s)", colStr, attrsString)
	return NewPQLBaseQuery(q, idx, nil)
}
func (idx *Index) SetColumnAttrs(colIDOrKey interface{}, attrs map[string]interface{}) *PQLBaseQuery {
	colStr, err := formatIDKey(colIDOrKey)
	if err != nil {
		return NewPQLBaseQuery("", idx, err)
	}
	attrsString, err := createAttributesString(attrs)
	if err != nil {
		return NewPQLBaseQuery("", idx, err)
	}
	q := fmt.Sprintf("SetColumnAttrs(%s,%s)", colStr, attrsString)
	return NewPQLBaseQuery(q, idx, nil)
}
// SetColumnAttrs creates a SetColumnAttrs query.
// SetColumnAttrs associates arbitrary key/value pairs with a column in an index.
// Following types are accepted: integer, float, string and boolean types.