66.2. Built-in Operator Classes
The core PostgreSQL distribution includes the GIN operator classes shown in Table 66.1. (Some of the optional modules described in Appendix F provide additional GIN operator classes.)
Table 66.1. Built-in GIN Operator Classes
| Name | Indexed Data Type | Indexable Operators | 
|---|---|---|
| array_ops | anyarray | &&<@=@> | 
| jsonb_ops | jsonb | ??&?|@> | 
| jsonb_path_ops | jsonb | @> | 
| tsvector_ops | tsvector | @@@@@ | 
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.
    © 1996–2019 The PostgreSQL Global Development Group
Licensed under the PostgreSQL License.
    https://www.postgresql.org/docs/11/gin-builtin-opclasses.html