diff --git a/doc/src/sgml/json.sgml b/doc/src/sgml/json.sgml index 66426189ca53fbf63786996d6917c22b0174e82d..d55a08fb18a769063ff7a4c28559ccfcf8ef2227 100644 --- a/doc/src/sgml/json.sgml +++ b/doc/src/sgml/json.sgml @@ -460,11 +460,16 @@ SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"tags": ["qu and a <literal>jsonb_path_ops</literal> GIN index is that the former creates independent index items for each key and value in the data, while the latter creates index items only for each value in the - data.<footnote><para>For this purpose, the term <quote>value</> - includes array elements, though JSON terminology sometimes considers - array elements distinct from values within objects.</para></footnote> - But in <literal>jsonb_path_ops</literal>, each index item is a hash - of both the value and the key(s) leading to it; for example to index + data. + <footnote> + <para> + For this purpose, the term <quote>value</> includes array elements, + though JSON terminology sometimes considers array elements distinct + from values within objects. + </para> + </footnote> + Basically, each <literal>jsonb_path_ops</literal> index item is + a hash of the value and the key(s) leading to it; for example to index <literal>{"foo": {"bar": "baz"}}</literal>, a single index item would be created incorporating all three of <literal>foo</>, <literal>bar</>, and <literal>baz</> into the hash value. Thus a containment query