GPKG: add ST_EnvIntersects() for faster spatial filtering when there is no spatial index #7621
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…is no spatial index Execution time can be ~ 1.5x faster. Before: ``` $ time ogrinfo nz-building-outlines.gpkg -sql "select count(*) from \"nz-building-outlines\" where st_maxx(geometry)>=1500000 and st_maxy(geometry)>= 5200000 and st_minx(geometry) <=1800000 and st_miny(geometry) <= 5800000" -al -q Layer name: SELECT OGRFeature(SELECT):0 count(*) (Integer) = 701300 real 0m0,909s user 0m0,633s sys 0m0,276s ``` After: ``` $ time ogrinfo nz-building-outlines.gpkg -sql "select count(*) from \"nz-building-outlines\" where ST_EnvelopesIntersects(geometry, 1500000, 5200000 ,1800000 ,5800000)" -al -q Layer name: SELECT OGRFeature(SELECT):0 count(*) (Integer) = 701300 real 0m0,605s user 0m0,310s sys 0m0,290s ```
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Is the somehow ungrammatical ST_EnvelopesIntersects alias there because SpatiaLite has it also? |
yes |
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Execution time can be ~ 1.5x faster.
Before:
After: