A path expression can be a Boolean predicate, although the SQL/JSON

standard allows predicates only in filters. This is necessary for

implementation of the <literal>@@</literal> operator. For example,

the following<type>jsonpath</type> expression is valid in

the following<type>jsonpath</type> expression is valid in

<productname>PostgreSQL</productname>:

<programlisting>

'$.track.segments[*].HR &lt; 70'

</entry>

<entry>

<para><literal>

select * jsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min &amp;&amp; @ &lt;= $max)', '{"min":2,"max":4}');

select *fromjsonb_path_query('{"a":[1,2,3,4,5]}', '$.a[*] ? (@ >= $min &amp;&amp; @ &lt;= $max)', '{"min":2,"max":4}');

</literal></para>

</entry>

<entry>