I know the question is a bit generic.
I have multiple tables with point geometries and a GIST Index eating many gigabits of space.
From what I understrand about Gist Index on polygons or polylines, it will store the bounding box and computes a first calculation on the bounding box instead of the full geometry resulting in faster processing.
But what about point geometry?
Will it to anything more that ordering the points spatially?
Thanks
Best Answer
A GiST index on points can be very useful. It will speed up queries with
st_contains
,st_overlaps
and similar functions in theWHERE
condition, where one of the arguments is the indexed column.