4 Provides simple deletion of matching key-value pairs at the top level of PostgreSQL jsonb types.
6 When the jsonb type was added in PostgreSQL 9.4 many modifying operators and functions were unimplemented, and although most operators have been <a href="https://wiki.postgresql.org/wiki/What's_new_in_PostgreSQL_9.5#JSONB-modifying_operators_and_functions">added</a> in PostgreSQL 9.5 there is still no quick way of getting the difference of two jsonb types at the top level.
8 * deletion using **-** operator
9 * jsonb_delete(jsonb, jsonb)
12 CREATE EXTENSION jsonb_delete;
15 Was originally part of <a href="https://github.com/glynastill/pg_jsonb_opx">this</a> repository, but as of PostgreSQL 9.5 there's equivalent functionality of the other parts available in core (For PostgreSQL 9.4 you can get the 9.5 functionality <a href="https://github.com/erthalion/jsonbx">here</a>).