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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Alessandro,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">good news, thanks for your reply and to your customer.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Regards
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Burghardt<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Alessandro Pasotti [mailto:apasotti@gmail.com]
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<b>Gesendet:</b> Freitag, 18. Oktober 2019 10:27<br>
<b>An:</b> Scholle, Burghardt (15-3 GIS)<br>
<b>Cc:</b> qgis-user<br>
<b>Betreff:</b> Re: [Qgis-user] QGIS 3 - Joins<o:p></o:p></span></p>
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<p class="MsoNormal">On Fri, Oct 18, 2019 at 10:15 AM <<a href="mailto:Burghardt.Scholle@stadt.wolfsburg.de">Burghardt.Scholle@stadt.wolfsburg.de</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Dear list,<br>
<br>
I have a postgres layer that is connected to other postgres lookup tables via joins. QGIS does not take these joins into account when copying a layer (to another project) or when creating style or layer files. This is really annoying if you have to rebuild
the joins by hand over and over again. Am I doing something wrong? In the dialog window "Edit Vector Join" I see no further ways. I only activated the option "Cache join layer in virtual memory".
<o:p></o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal">It's a known issue, the root cause is that the relations/joins are stored by QGIS using the layer ID (which is unique) so the relations are lost in case of layer copy or save/load from a style file, the good new is that I've got a customer
that has committed some budget to fix this problem and I'll start to work on that soon.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The solution would imply storing some more information about the layers that compose a relation so that we can at try to reconstruct the relation by searching for "similar" layers in the existing project before giving up with a broken relation/join.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The same issue applies to the value-relation widget.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Alessandro Pasotti<br>
w3: <a href="http://www.itopen.it" target="_blank">www.itopen.it</a><o:p></o:p></p>
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