[Qgis-user] Slooooow spatial joins

[Nyall Dawson]

On Tue, 18 May 2021 at 11:59, Ryan Peel <ryanpeel at gmail.com> wrote:
>
> I have tried using MMQGIS plugin, refFunctions geomwith function and the aggregate function.  I am using 3.18 QGIS
>
> Despite having spatial indexes on both tables, when I try to use any of these operations to assign the value of a field in the polygon layer to one in the point layer, it goes very slow.  Like, ridiculously slow and of no value.  And, I only have 600 records in the points layer and just a few thousand records in the polygon layer.
>
> What can I do to speed this up?

The absolute fastest way to join is to use the Processing tool: Join
Attributes by Location -- no plugins necessary :D

Nyall