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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I think it could be simpler and more efficient to use a null select from a left join and a st_intersects test like this :<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>SELECT point_id, poly_id, point_geom FROM points_table<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>LEFT JOIN poly_table ON ST_Intersects(point_geom, poly_geom)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>WHERE poly_id IS NULL<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>NOT EXISTS will also perform a left outer join<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m not very familiar with box2d type and I generally prefer to use the general geometry type. So To restrict potential candidates, I would add AND ST_Intersects(point_geom, ST_GeomFromText(‘POLYGON((425930 7197112, 429605.074 7197112, 429605.074 7200582.906, 425930 7200582.906, 425930 7197112))’)) and you could also add the SRID information as a GeomFromText parameter.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>HTH<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hugues.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> postgis-users-bounces@lists.osgeo.org [mailto:postgis-users-bounces@lists.osgeo.org] <b>De la part de</b> Lauri Kajan<br><b>Envoyé :</b> mardi 12 août 2014 08:52<br><b>À :</b> postgis-users@lists.osgeo.org<br><b>Objet :</b> [postgis-users] Points not in Polygons and 'jointype 5 notsupported'<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi all,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm trying to figure out an optimal query to find points in a table that are not in any polygons.<o:p></o:p></p></div><div><p class=MsoNormal>My points table contains 3,7 million points and 6000 polygons.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>My goal is to find points from certain area that are not contained by polygons. Here is my current query:<o:p></o:p></p></div><div><div><p class=MsoNormal><i> select</i><o:p></o:p></p></div><div><p class=MsoNormal><i> id,</i><o:p></o:p></p></div><div><p class=MsoNormal><i> geom</i><o:p></o:p></p></div><div><p class=MsoNormal><i> from</i><o:p></o:p></p></div><div><p class=MsoNormal><i> points</i><o:p></o:p></p></div><div><p class=MsoNormal><i> where not exists(</i><o:p></o:p></p></div><div><p class=MsoNormal><i> select * from polygons where st_contains(polygons.geom, points.geom)</i><o:p></o:p></p></div><div><p class=MsoNormal><i> )</i><o:p></o:p></p></div><div><p class=MsoNormal><i> and points.geom && 'BOX(425930 7197112, 429605.074 7200582.906)'::BOX2D;</i><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm getting following notice from PostGIS:<o:p></o:p></p></div><div><p class=MsoNormal><i>NOTICE: gserialized_gist_joinsel: jointype 5 not supported</i><o:p></o:p></p></div><div><p class=MsoNormal>What I have understood is that query works ok but the query plan might not be optimal.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Is there something to do to improve this?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Here is the explain analyze results:<o:p></o:p></p></div><div><div><p class=MsoNormal>"Nested Loop Anti Join (cost=18.83..3356.77 rows=809 width=36) (actual time=3.986..438.047 rows=272 loops=1)"<o:p></o:p></p></div><div><p class=MsoNormal>" -> Bitmap Heap Scan on points (cost=18.68..1540.86 rows=809 width=36) (actual time=0.724..2.955 rows=1452 loops=1)"<o:p></o:p></p></div><div><p class=MsoNormal>" Recheck Cond: (geom && '010300000001000000050000000000000028FF1941000000006E745B410000000028FF19416DE7FBB9D1775B41F0A7C64B94381A416DE7FBB9D1775B41F0A7C64B94381A41000000006E745B410000000028FF1941000000006E745B41'::geometry)"<o:p></o:p></p></div><div><p class=MsoNormal>" -> Bitmap Index Scan on points_geom (cost=0.00..18.48 rows=809 width=0) (actual time=0.699..0.699 rows=1452 loops=1)"<o:p></o:p></p></div><div><p class=MsoNormal>" Index Cond: (geom && '010300000001000000050000000000000028FF1941000000006E745B410000000028FF19416DE7FBB9D1775B41F0A7C64B94381A416DE7FBB9D1775B41F0A7C64B94381A41000000006E745B410000000028FF1941000000006E745B41'::geometry)"<o:p></o:p></p></div><div><p class=MsoNormal>" -> Index Scan using polygons_geom on polygons (cost=0.15..2.23 rows=1 width=4361) (actual time=0.296..0.296 rows=1 loops=1452)"<o:p></o:p></p></div><div><p class=MsoNormal>" Index Cond: (geom && points.geom)"<o:p></o:p></p></div><div><p class=MsoNormal>" Filter: _st_contains(geom, points.geom)"<o:p></o:p></p></div><div><p class=MsoNormal>" Rows Removed by Filter: 0"<o:p></o:p></p></div><div><p class=MsoNormal>"Total runtime: 438.491 ms"<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I appreciate all your help!<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>-Lauri<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>