<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)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><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;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.E-MailFormatvorlage18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
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 lang="DE" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hey Daniel,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">did you have a look at virtual layers [1]? They allow you to reference as many layers and tables as you wish and perform some SQL on them to create a new layer. In addition, if you define
a proper relation [2] between your layers you can use the aggregate_* [3] functions in the field calculator to get to your desired result.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">HTH Frank<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">[1]</span><span lang="EN-GB">
</span><span lang="EN-GB" style="mso-fareast-language:EN-US">https://docs.qgis.org/2.18/en/docs/user_manual/working_with_vector/virtual_layers.html<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">[2] https://docs.qgis.org/2.18/en/docs/user_manual/working_with_vector/attribute_table.html?highlight=relation#creating-one-or-many-to-many-relations<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">[3] https://docs.qgis.org/2.18/en/docs/user_manual/working_with_vector/expression.html?highlight=aggregates#aggregates-functions<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal">Dipl. Geogr. Frank Broniewski<br>
Waldhölzbacher Str. 51<br>
66679 Losheim am See<br>
06872 509 068 4<o:p></o:p></p>
<p class="MsoNormal">0176 611 26 9 2 6<br>
www.frankbroniewski.com<o:p></o:p></p>
</div>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>Von:</b> Qgis-user [mailto:qgis-user-bounces@lists.osgeo.org]
<b>Im Auftrag von </b>Daniel Alejandro Montecinos Rubilar<br>
<b>Gesendet:</b> Dienstag, 20. Februar 2018 18:27<br>
<b>An:</b> qgis-user@lists.osgeo.org<br>
<b>Betreff:</b> [Qgis-user] Problems to create new columns through two tables<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">Hello<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">I want to create a new column in QGIS from a cross-information of two tables. The first table are communes of my country and the second are some electrical faults plotted as points. Then I want
to create a new column in table 1, by means of the following logic:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">NewColumn = Sum (column_value2_ of_table2)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">I have been using MapInfo for a long time and recently I occupy QGIS with the intention of changing and I was getting convinced until I could not perform this operation, which in MapInfo was
very easy with SQL queries.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">I already appreciate your comments<o:p></o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">Sincerely,<o:p></o:p></span></p>
</div>
<div>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:11.5pt;color:#003F80">
<hr size="2" width="100%" align="center">
</span></div>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">Daniel Montecinos Rubilar<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.5pt;color:#003F80">Electrical Civil Engineer<o:p></o:p></span></p>
</div>
</div>
</body>
</html>