The core PostgreSQL distribution includes the GIN operator classes shown in Table 67.1. (Some of the optional modules described in Appendix F provide additional GIN operator classes.)
Table 67.1. Built-in GIN Operator Classes
| Name | Indexable Operators | 
|---|---|
| array_ops | && (anyarray,anyarray) | 
| @> (anyarray,anyarray) | |
| <@ (anyarray,anyarray) | |
| = (anyarray,anyarray) | |
| jsonb_ops | @> (jsonb,jsonb) | 
| @? (jsonb,jsonpath) | |
| @@ (jsonb,jsonpath) | |
| ? (jsonb,text) | |
| ?| (jsonb,text[]) | |
| ?& (jsonb,text[]) | |
| jsonb_path_ops | @> (jsonb,jsonb) | 
| @? (jsonb,jsonpath) | |
| @@ (jsonb,jsonpath) | |
| tsvector_ops | @@ (tsvector,tsquery) | 
| @@@ (tsvector,tsquery) | 
  Of the two operator classes for type jsonb, jsonb_ops
  is the default.  jsonb_path_ops supports fewer operators but
  offers better performance for those operators.
  See Section 8.14.4 for details.