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Add json_array_elements_text function.

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This was a notable omission from the json functions added in 9.3 and
there have been numerous complaints about its absence.

Laurence Rowe.
This commit is contained in:
Andrew Dunstan
2014-01-29 15:39:01 -05:00
parent 699b1f40da
commit 5264d91541
7 changed files with 143 additions and 22 deletions
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21
doc/src/sgml/func.sgml
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@ -10280,6 +10280,27 @@ table2-mapping
1
true
[2,false]
</programlisting>
</entry>
</row>
<row>
<entry>
<indexterm>
<primary>json_array_elements_text</primary>
</indexterm>
<literal>json_array_elements_text(json)</literal>
</entry>
<entry><type>SETOF json</type></entry>
<entry>
Expands a JSON array to a set of text values.
</entry>
<entry><literal>json_array_elements_text('["foo", "bar"]')</literal></entry>
<entry>
<programlisting>
value
-----------
foo
bar
</programlisting>
</entry>
</row>