Issue: Large polygon vector layer stored in SpatialLite db not rendering properly #28054
Labels
Bug
Either a bug report, or a bug fix. Let's hope for the latter!
Data Provider
Related to specific vector, raster or mesh data providers
Author Name: Brett Carlock (@Saijin-Naib)
Original Redmine Issue: 20233
Affected QGIS version: 3.2.3
Redmine category:data_provider/spatialite
Issue summary:
Relatively large polygon dataset stored in QGIS-created SpatialLite database will not draw properly/fully within QGIS. Previewed from SpatialLite-GUI, it appears fine.
Exported to ESRI Shapefile & displayed/loaded, and the layer draws fully.
Queries/filters/etc can be done against the SpatialLite layer, though they do not change the display.
For instance, if I filter on STATEFP to 50 (Vermont), it'll not show ANY geometries, since all the ones in Vermont do not draw when it is in this error state. From this I can conclude that it isn't an issue with the number of geometries being loaded/drawn at any given time, but something else entirely.
I've verified the integrity of the database multiple times in SQLite Studio as well as SpatialLite-GUI, and they report good consistency/validity.
Screencap of the behavior:
https://www.youtube.com/watch?v=vkAHcdlzz3A
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