From ae7363999ff36a6857b968ffee8487519273709b Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Mon, 22 Apr 2013 21:51:14 +0300
Subject: [PATCH] Mention in docs that you can create SP-GiST indexes on range
types.
This is new in 9.3devel.
---
doc/src/sgml/rangetypes.sgml | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/doc/src/sgml/rangetypes.sgml b/doc/src/sgml/rangetypes.sgml
index 15cbef6e69b..8dabc833e9e 100644
--- a/doc/src/sgml/rangetypes.sgml
+++ b/doc/src/sgml/rangetypes.sgml
@@ -371,9 +371,9 @@ SELECT '[1.234, 5.678]'::floatrange;
</para>
<para>
- In addition, any range type that is meant to be used with GiST indexes
+ In addition, any range type that is meant to be used with GiST or SP-GiST indexes
should define a subtype difference, or <literal>subtype_diff</>, function.
- (A GiST index will still work without <literal>subtype_diff</>, but it is
+ (the index will still work without <literal>subtype_diff</>, but it is
likely to be considerably less efficient than if a difference function is
provided.) The subtype difference function takes two input values of the
subtype, and returns their difference (i.e., <replaceable>X</> minus
@@ -394,7 +394,7 @@ SELECT '[1.234, 5.678]'::floatrange;
</para>
</sect2>
- <sect2 id="rangetypes-gist">
+ <sect2 id="rangetypes-indexing">
<title>Indexing</title>
<indexterm>
@@ -403,12 +403,12 @@ SELECT '[1.234, 5.678]'::floatrange;
</indexterm>
<para>
- GiST indexes can be created for table columns of range types.
- For instance:
+ GiST and SP-GiST indexes can be created for table columns of range types.
+ For instance, to create a GiST index:
<programlisting>
CREATE INDEX reservation_idx ON reservation USING gist (during);
</programlisting>
- A GiST index can accelerate queries involving these range operators:
+ A GiST or SP-GiST index can accelerate queries involving these range operators:
<literal>=</>,
<literal>&&</>,
<literal><@</>,
--
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