From fd219e4d92004f007e74ac847672b250a73628de Mon Sep 17 00:00:00 2001
From: Regina Obe <lr@pcorp.us>
Date: Wed, 3 Oct 2012 06:06:00 +0000
Subject: [PATCH] revise st_union example to show new and faster way of doing
 multi-band union

git-svn-id: http://svn.osgeo.org/postgis/trunk@10362 b70326c6-7e19-0410-871a-916f4a2858ee
---
 doc/reference_raster.xml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/reference_raster.xml b/doc/reference_raster.xml
index 0b344c221..d7ec1fb2a 100644
--- a/doc/reference_raster.xml
+++ b/doc/reference_raster.xml
@@ -8721,6 +8721,7 @@ UPDATE wind
 
 				<para>Availability: 2.0.0 </para>
 				<para>Enhanced: 2.1.0 Improved Speed (fully C-Based).</para>
+				<para>Changed: 
 			</refsection>
 				
 			<refsection>
@@ -8736,7 +8737,7 @@ FROM sometable WHERE filename IN('dem01', 'dem02') GROUP BY filename;</programli
 				<title>Examples: Return a multi-band raster that is the union of tiles intersecting geometry</title>
 				<programlisting>
 -- this creates a multi band raster collecting all the tiles that intersect a line
-SELECT ST_AddBand(NULL,ARRAY[ST_Union(rast,1), ST_Union(rast,2), ST_Union(rast,3) ])
+SELECT ST_Union(rast,ARRAY[ROW(1, 'LAST'), ROW(2, 'LAST'), ROW(3, 'LAST')]::unionarg[])
 FROM aerials.boston
 WHERE ST_Intersects(rast,  ST_GeomFromText('LINESTRING(230486 887771, 230500 88772)',26986) );</programlisting>
 			</refsection>
-- 
2.40.0