16.11.2015 21:59, Alvaro Herrera:
Anastasia Lubennikova wrote:
Fix incomplete gist interface description.
Hi, thanks for the patch.
I think this sentence is a bit confusing:
<para>
- GiST indexes require seven support functions, with an optional eighth, as
+ GiST indexes require seven support functions, with two optional, as
shown in <xref linkend="xindex-gist-support-table">.
The new text seems to say that one of the seven support funcs is
optional, which is wrong if I correctly understand that the "fetch"
optional function was added.
Maybe "GiST indexes require nine support functions, two of which are
optional, as shown in XYZ".
Yes, thank you for advice. I think it'll be more clear.
This is to be backpatched as far back as commit d04c8ed9044ec, right?
Yes.
--
Anastasia Lubennikova
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
diff --git a/doc/src/sgml/xindex.sgml b/doc/src/sgml/xindex.sgml
index 4fac018..4a8eb1b 100644
--- a/doc/src/sgml/xindex.sgml
+++ b/doc/src/sgml/xindex.sgml
@@ -416,7 +416,7 @@
</table>
<para>
- GiST indexes require seven support functions, with an optional eighth, as
+ GiST indexes require nine support functions, two of which are optional, as
shown in <xref linkend="xindex-gist-support-table">.
(For more information see <xref linkend="GiST">.)
</para>
@@ -477,6 +477,11 @@
<entry>determine distance from key to query value (optional)</entry>
<entry>8</entry>
</row>
+ <row>
+ <entry><function>fetch</></entry>
+ <entry>compute original representation of a compressed key for index-only scans (optional)</entry>
+ <entry>9</entry>
+ </row>
</tbody>
</tgroup>
</table>
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