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<div class="moz-cite-prefix">On 28.07.2020 22:15, Alessandro Pasotti
wrote:<br>
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<blockquote type="cite"
cite="mid:CAL5Q672WHzUA3QgG-WxwRMDXWAEV2ZKaBADAD90FMawX5qHVAQ@mail.gmail.com">
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<div dir="auto">Hi,
<div dir="auto"><br>
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<div dir="auto">Seems pretty bad, please file a ticket.</div>
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<p>Thanks, Alessandro!<br>
</p>
<p>Done: <a class="moz-txt-link-freetext" href="https://github.com/qgis/QGIS/issues/38018">https://github.com/qgis/QGIS/issues/38018</a></p>
<p>Anita</p>
<p><br>
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<blockquote type="cite"
cite="mid:CAL5Q672WHzUA3QgG-WxwRMDXWAEV2ZKaBADAD90FMawX5qHVAQ@mail.gmail.com"><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Jul 28, 2020, 21:45
Anita Graser <<a href="mailto:anitagraser@gmx.at"
moz-do-not-send="true">anitagraser@gmx.at</a>> wrote:<br>
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.8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hi,
</p>
<p>There seems to be a performance regression concerning
"Show selected features" in the attribute table of recent
QGIS versions. (See also <a
href="https://twitter.com/DrChrisGeoSci/status/1288120808951312389"
target="_blank" rel="noreferrer" moz-do-not-send="true">https://twitter.com/DrChrisGeoSci/status/1288120808951312389</a>)</p>
<p>I've tested this with the Natural Earth dataset
ne_10m_populated_places layer. The expression <span
style="font-family:'Courier New';color:#000000">"NAME"
like 'A%'</span> is close to instantaneous but switching
to "Show selected features" takes forever and freezes QGIS
master and 3.14 in a way that looks like it crashed (i.e.
"not responding" on Windows).
</p>
<p>In 3.4 "Show selected features" is much faster. There's
no freeze.
</p>
<p>Is this a known issue or should I open a ticket?
</p>
<p>Regards,</p>
<p>Anita</p>
<p>
</p>
<p>
</p>
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