<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:#1F497D;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:"Consolas",serif;
color:black;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Tracked it down. It's caused by the cost changes we made in 2.3. So it affects 9.5 running 2.3 as well.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>I've committed one part which would fix your particular problem.<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 style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>The fix, change the cost on ST_SetSRID from 10 to 1 as follows and that should fix this particular issue. There are other functions commonly used this way that we have to patch.<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 style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>CREATE OR REPLACE FUNCTION st_setsrid(<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> geometry,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> integer)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> RETURNS geometry AS<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>'$libdir/postgis-2.3', 'LWGEOM_set_srid'<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> LANGUAGE c IMMUTABLE STRICT PARALLEL SAFE<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> COST 1;<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 style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> postgis-users [mailto:postgis-users-bounces@lists.osgeo.org] <b>On Behalf Of </b>Bill Measday<br><b>Sent:</b> Saturday, December 03, 2016 3:41 PM<br><b>To:</b> postgis-users@lists.osgeo.org<br><b>Subject:</b> Re: [postgis-users] Substantial different index use between 9.5 and 9.6 using Postgis<o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p style='margin-left:.5in'>Thanks Regina - nice to know it wasn't just my incompetence!.<o:p></o:p></p><p style='margin-left:.5in'>Good luck tracking down the root cause.<o:p></o:p></p><p style='margin-left:.5in'><br>Rgds<o:p></o:p></p><p style='margin-left:.5in'><br>Bill<o:p></o:p></p><p style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><p class=MsoNormal style='margin-left:.5in'>On 4/12/2016 6:53 AM, Regina Obe wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-left:1.0in'><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>For reference I have ticketed this as:</span><o:p></o:p></p><p class=MsoNormal style='margin-left:1.0in'><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='margin-left:1.0in'><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><a href="https://trac.osgeo.org/postgis/ticket/3675">https://trac.osgeo.org/postgis/ticket/3675</a></span><o:p></o:p></p><p class=MsoNormal style='margin-left:1.0in'><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> </span><o:p></o:p></p><p class=MsoNormal style='margin-left:1.0in'> <o:p></o:p></p><div><p class=MsoNormal style='margin-left:1.0in'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:1.0in'>---------- message ----------<br><br><br><br>Bill,<br><br>Never mind. Thanks to Brian Hamlin's nudging on IRC that he sees the issue<br>too, I was able to replicate it.<br><br><br>I think the reason I missed it in my testing is that it doesn't happen with<br>the more common cases of:<br><br>SELECT e.gid<br>FROM e1 , e2<br>WHERE ST_Intersects(e1.geom, e2.geom);<br><br>Or where you use constants in ST_MakePoint like your example<br><br><br>But only in case where you have:<br><br>SELECT e.gid<br>FROM e1 , e2<br>WHERE ST_Intersects(e1.geom, ST_SetSRID(ST_MakePoint(e2.longitude,<br>e2.latitude),4326) );<br><br><br>So I'll go ahead and ticket it and try to track down the root cause. I<br>suspect it affects all our relation functions.<br><br>Thanks for bringing to our attention,<br><br>Regina<br><a href="http://www.postgis.us" target="_blank">http://www.postgis.us</a><br><a href="http://postgis.net" target="_blank">http://postgis.net</a><br><br><br><br><o:p></o:p></p></div><p class=MsoNormal style='margin-left:1.0in'> <o:p></o:p></p></div><p class=MsoNormal style='margin-left:.5in'><br><br><br><o:p></o:p></p><pre style='margin-left:.5in'>_______________________________________________<o:p></o:p></pre><pre style='margin-left:.5in'>postgis-users mailing list<o:p></o:p></pre><pre style='margin-left:.5in'><a href="mailto:postgis-users@lists.osgeo.org">postgis-users@lists.osgeo.org</a><o:p></o:p></pre><pre style='margin-left:.5in'><a href="http://lists.osgeo.org/mailman/listinfo/postgis-users">http://lists.osgeo.org/mailman/listinfo/postgis-users</a><o:p></o:p></pre></blockquote><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div></body></html>