La distribution de PostgreSQL inclut les classes d'opérateur SP-GiST indiquées dans Tableau 66.1.
Tableau 66.1. Classes d'opérateur SP-GiST internes
| Nom | Opérateurs indexables | Opérateurs d'ordre |
|---|---|---|
box_ops | << (box,box) | <-> (box,point) |
&< (box,box) | ||
&> (box,box) | ||
>> (box,box) | ||
<@ (box,box) | ||
@> (box,box) | ||
~= (box,box) | ||
&& (box,box) | ||
<<| (box,box) | ||
&<| (box,box) | ||
|&> (box,box) | ||
|>> (box,box) | ||
inet_ops | << (inet,inet) | |
<<= (inet,inet) | ||
>> (inet,inet) | ||
>>= (inet,inet) | ||
= (inet,inet) | ||
<> (inet,inet) | ||
< (inet,inet) | ||
<= (inet,inet) | ||
> (inet,inet) | ||
>= (inet,inet) | ||
&& (inet,inet) | ||
kd_point_ops | |>> (point,point) | <-> (point,point) |
<< (point,point) | ||
>> (point,point) | ||
<<| (point,point) | ||
~= (point,point) | ||
<@ (point,box) | ||
poly_ops | << (polygon,polygon) | <-> (polygon,point) |
&< (polygon,polygon) | ||
&> (polygon,polygon) | ||
>> (polygon,polygon) | ||
<@ (polygon,polygon) | ||
@> (polygon,polygon) | ||
~= (polygon,polygon) | ||
&& (polygon,polygon) | ||
<<| (polygon,polygon) | ||
&<| (polygon,polygon) | ||
|>> (polygon,polygon) | ||
|&> (polygon,polygon) | ||
quad_point_ops | |>> (point,point) | <-> (point,point) |
<< (point,point) | ||
>> (point,point) | ||
<<| (point,point) | ||
~= (point,point) | ||
<@ (point,box) | ||
range_ops | = (anyrange,anyrange) | |
&& (anyrange,anyrange) | ||
@> (anyrange,anyelement) | ||
@> (anyrange,anyrange) | ||
<@ (anyrange,anyrange) | ||
<< (anyrange,anyrange) | ||
>> (anyrange,anyrange) | ||
&< (anyrange,anyrange) | ||
&> (anyrange,anyrange) | ||
-|- (anyrange,anyrange) | ||
text_ops | = (text,text) | |
< (text,text) | ||
<= (text,text) | ||
> (text,text) | ||
>= (text,text) | ||
~<~ (text,text) | ||
~<=~ (text,text) | ||
~>=~ (text,text) | ||
~>~ (text,text) | ||
^@ (text,text) |
Sur les deux classes d'opérateur pour le type point,
quad_point_ops est celui par défaut.
kd_point_ops gère les mêmes opérateurs mais utilise une
structure de données différente pour l'index, structure pouvant offrir de
meilleures performances pour certaines utilisations.
Les classes d'opérateur quad_point_ops,
kd_point_ops et poly_ops supportent
l'ordre d'opérateur <->, qui active la recherche de
type voisin-le-plus-proche (k-NN) sur des ensembles de
données composés de point ou polygon.
