QUERY PLAN
Sort (cost=2464.00..2466.50 rows=1000 width=363)
Sort Key: (date(tt.dt)) DESC
-> HashAggregate (cost=2396.67..2414.17 rows=1000 width=363)
Group Key: tt.dt, p.day_at, p.user_id
-> Hash Left Join (cost=2376.42..2389.17 rows=1000 width=347)
Hash Cond: (date(tt.dt) = p.day_at)
-> Function Scan on generate_series tt (cost=0.02..10.02 rows=1000 width=8)
-> Hash (cost=2351.20..2351.20 rows=2016 width=339)
-> Seq Scan on tbl_punch p (cost=0.00..2351.20 rows=2016 width=339)
Filter: (user_id = 1011)