It appears that some variants of .** jsonpath accessor are undocumented. In
particular undocumented variants are:
.**{level}
.**{lower_level to upper_level}
.**{lower_level to last}
This commit adds missing documentation for them.
</para>
</entry>
</row>
+ <row>
+ <entry>
+ <para>
+ <literal>.**{<replaceable>level</replaceable>}</literal>
+ </para>
+ <para>
+ <literal>.**{<replaceable>lower_level</replaceable> to
+ <replaceable>upper_level</replaceable>}</literal>
+ </para>
+ <para>
+ <literal>.**{<replaceable>lower_level</replaceable> to
+ last}</literal>
+ </para>
+ </entry>
+ <entry>
+ <para>
+ Same as <literal>.**</literal>, but with filter over nesting
+ level of JSON hierarchy. Levels are specified as integers.
+ Zero level corresponds to current object. This is a
+ <productname>PostgreSQL</productname> extension of the SQL/JSON
+ standard.
+ </para>
+ </entry>
+ </row>
<row>
<entry>
<para>