Репозиторий работ по курсу
make build
make start
wikidataru.public> select public.links_only_clear.source_name,
public.links_only_clear.dest_name,
wdr.dest_name
from public.links_only_clear
cross join public.links_only_clear wdr
where public.links_only_clear.dest_name=wdr.source_name
wikidataru.public> explain analyse select links_only_clear.source_name,
links_only_clear.source_url,
links_only_clear.dest_name,
links_only_clear.dest_url,
wdr.dest_name,
wdr.dest_url,
wdr2.dest_name,
wdr2,wdr.dest_url
from links_only_clear
cross join links_only_clear wdr
cross join links_only_clear wdr2
where links_only_clear.dest_name=wdr.source_name and wdr.dest_name=wdr2.source_name and wdr2.dest_name='(25143) Итокава' and wdr.source_name='Лезгины'