From: Sandro Santilli <strk@keybit.net>
Date: Mon, 23 Feb 2015 18:27:38 +0000 (+0000)
Subject: Add test for index supported KNN queries
X-Git-Tag: 2.2.0rc1~639
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=adedc9fb7046f6f49f004c5189dcb21caba0f77f;p=postgis

Add test for index supported KNN queries

git-svn-id: http://svn.osgeo.org/postgis/trunk@13272 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/regress/regress_index.sql b/regress/regress_index.sql
index 5397dc345..0b27132d6 100644
--- a/regress/regress_index.sql
+++ b/regress/regress_index.sql
@@ -32,6 +32,20 @@ set enable_seqscan = off;
 SELECT 'scan_seq', qnodes('select * from test where the_geom && ST_MakePoint(0,0)');
  select num,ST_astext(the_geom) from test where the_geom && 'BOX3D(125 125,135 135)'::box3d order by num;
 
+-- Index-supported KNN query
+
+SELECT '<-> idx', qnodes('select * from test order by the_geom <-> ST_MakePoint(0,0)');
+SELECT '<-> res1',num,
+  ST_Distance(the_geom, 'LINESTRING(0 0,5 5)'::geometry)::numeric(10,2),
+  ST_astext(the_geom) from test
+  order by the_geom <-> 'LINESTRING(0 0,5 5)'::geometry LIMIT 1;
+
+SELECT '<#> idx', qnodes('select * from test order by the_geom <#> ST_MakePoint(0,0)');
+SELECT '<#> res1',num,
+  ST_Distance(the_geom, 'LINESTRING(0 0,5 5)'::geometry)::numeric(10,2),
+  ST_astext(the_geom) from test
+  order by the_geom <#> 'LINESTRING(0 0,5 5)'::geometry LIMIT 1;
+
 CREATE FUNCTION estimate_error(qry text, tol int)
 RETURNS text
 LANGUAGE 'plpgsql' VOLATILE AS $$
diff --git a/regress/regress_index_expected b/regress/regress_index_expected
index ae75d050d..df1b60941 100644
--- a/regress/regress_index_expected
+++ b/regress/regress_index_expected
@@ -6,6 +6,10 @@ scan_seq|Index Scan
 2594|POINT(130.504303 126.53112)
 3618|POINT(130.447205 131.655289)
 7245|POINT(128.10466 130.94133)
+<-> idx|Index Scan
+<-> res1|48589|0.08|POINT(2.33793712 2.44566727)
+<#> idx|Index Scan
+<#> res1|48589|0.08|POINT(2.33793712 2.44566727)
 3+=5:true
 924+=60:true
 12621+=500:true