```
SELECT *
FROM system.dictionaries
WHERE name LIKE 'XXXX%'

Row 1:
──────
database:                    default
name:                        XXXX_dict
uuid:                        00000000-0000-0000-0000-000000000000
status:                      LOADED
origin:                      default.XXXX_dict
type:                        Polygon
key:                         (Array(Array(Array(Array(Float64)))))
attribute.names:             ['name','id']
attribute.types:             ['String','String']
bytes_allocated:             0
query_count:                 0
hit_rate:                    1
element_count:               433731
load_factor:                 1
source:                      ClickHouse: default.XXXX
lifetime_min:                60
lifetime_max:                1800
loading_start_time:          2021-03-11 00:07:52
last_successful_update_time: 2021-03-11 00:08:24
loading_duration:            31.595
last_exception:
```
const Point & l_,
    const Point & r_,
    size_t polygon_id_,
    size_t edge_id_)
    : l(l_),
      r(r_),
      polygon_id(polygon_id_),
      edge_id(edge_id_)
{
    /** Calculating arguments of line equation.
      * Original equation of this edge is:
      * f(x) = l.y() + (r.y() - l.y()) / (r.x() - l.x()) * (x - l.x())
      */
    k = (r.y() - l.y()) / (r.x() - l.x());
    b = l.y() - k * l.x();
}
bool SlabsPolygonIndex::Edge::compareByLeftPoint(const Edge & a, const Edge & b)