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Commite0e3dad

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Document jsonpath .** accessor with nesting level filter
It appears that some variants of .** jsonpath accessor are undocumented. Inparticular undocumented variants are: .**{level} .**{lower_level to upper_level} .**{lower_level to last}This commit adds missing documentation for them.
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‎doc/src/sgml/json.sgml

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@@ -807,6 +807,30 @@ SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"tags": ["qu
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</para>
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</entry>
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</row>
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<row>
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<entry>
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<para>
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<literal>.**{<replaceable>level</replaceable>}</literal>
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</para>
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<para>
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<literal>.**{<replaceable>lower_level</replaceable> to
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<replaceable>upper_level</replaceable>}</literal>
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</para>
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<para>
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<literal>.**{<replaceable>lower_level</replaceable> to
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last}</literal>
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</para>
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</entry>
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<entry>
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<para>
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Same as <literal>.**</literal>, but with filter over nesting
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level of JSON hierarchy. Levels are specified as integers.
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Zero level corresponds to current object. This is a
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<productname>PostgreSQL</productname> extension of the SQL/JSON
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standard.
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</para>
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</entry>
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</row>
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<row>
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<entry>
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<para>

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