Hi all,
Something I never have really understood is the explain statement. I know that it shows the query execution plan, but how am I meant to understand the output? For example could someone give me some pointers as to what is happening below?
Unique (cost=10.25..10.47 rows=4 width=80)
-> Sort (cost=10.25..10.25 rows=44 width=80)
-> Nested Loop (cost=0.00..9.04 rows=44 width=80)
-> Index Scan using region_pkey on region (cost=0.00..3.01 rows=1 width=32)
-> Index Scan using feature_the_geom_idx on feature (cost=0.00..6.01 rows=1 width=48
)
Any pointers to some docs would be good.
Thanks,
Benjamin
