Feature request #12926
Improve attribute table performance
|Pull Request or Patch supplied:||No||Resolution:||fixed/implemented|
|Easy fix?:||No||Copied to github as #:||21008|
Loading a large (pg) table requires the loading of all records. This is a real performance killer, and effectively prevents the use of layers with millions of records.
Moreover, even when selection Show only selected in Options, and selecting a few records, apparently all records are read, so this does not speed up.
This beaviour is changed from 1.8 to 2.0. In older versions if you show only selection or show only object visible in map extent qgis was faster. With newer version it has to read all the table data every time it is opened.
See also #10619