Postgres 9.6 rodando no Amazon RDS.

Eu tenho 2 tabelas:

eventos agregados - mesa grande com 6 chaves (IDs)metadados da campanha - tabela pequena com definição de campanha.

Associo-me ao 2 para filtrar metadados como nome da campanha.

A consulta é para obter um relatório de detalhamento exibido por canal e data da campanha (a data é diária).

Sem FK e não nulo. A tabela de relatórios possui várias linhas por dia por campanhas (porque a agregação é baseada em 6 chaves de atributo).

Quando ingresso, o plano de consulta cresce para 10s (vs 300ms)

explain analyze select c.campaign_channel as channel,date as day , sum( displayed )  as display,ed
from report_campaigns c
left join events_daily r on r.campaign_id = c.c_id
where  provider_id = 7726 and c.p_id = 7726 and c.campaign_name <> 'test'
and date >= '20170513 12:00' and date <= '20170515 12:00'
group by c.campaign_channel,date;
                                                                                         QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 GroupAggregate  (cost=71461.93..71466.51 rows=229 width=22) (actual time=104.189..114.788 rows=6 loops=1)
   Group Key: c.campaign_channel, r.date
   ->  Sort  (cost=71461.93..71462.51 rows=229 width=18) (actual time=100.263..106.402 rows=31205 loops=1)
         Sort Key: c.campaign_channel, r.date
         Sort Method: quicksort  Memory: 3206kB
         ->  Hash Join  (cost=1092.52..71452.96 rows=229 width=18) (actual time=22.149..86.955 rows=31205 loops=1)
               Hash Cond: (r.campaign_id = c.c_id)
               ->  Append  (cost=0.00..70245.84 rows=29948 width=20) (actual time=21.318..71.315 rows=31205 loops=1)
                     ->  Seq Scan on events_daily r  (cost=0.00..0.00 rows=1 width=20) (actual time=0.005..0.005 rows=0 loops=1)
                           Filter: ((date >= '2017-05-13 12:00:00'::timestamp without time zone) AND (date <= '2017-05-15 12:00:00'::timestamp without time zone) AND (provider_id =
                     ->  Bitmap Heap Scan on events_daily_20170513 r_1  (cost=685.36..23913.63 rows=1 width=20) (actual time=17.230..17.230 rows=0 loops=1)
                           Recheck Cond: (provider_id = 7726)
                           Filter: ((date >= '2017-05-13 12:00:00'::timestamp without time zone) AND (date <= '2017-05-15 12:00:00'::timestamp without time zone))
                           Rows Removed by Filter: 13769
                           Heap Blocks: exact=10276
                           ->  Bitmap Index Scan on events_daily_20170513_full_idx  (cost=0.00..685.36 rows=14525 width=0) (actual time=2.356..2.356 rows=13769 loops=1)
                                 Index Cond: (provider_id = 7726)
                     ->  Bitmap Heap Scan on events_daily_20170514 r_2  (cost=689.08..22203.52 rows=14537 width=20) (actual time=4.082..21.389 rows=15281 loops=1)
                           Recheck Cond: (provider_id = 7726)
                           Filter: ((date >= '2017-05-13 12:00:00'::timestamp without time zone) AND (date <= '2017-05-15 12:00:00'::timestamp without time zone))
                           Heap Blocks: exact=10490
                           ->  Bitmap Index Scan on events_daily_20170514_full_idx  (cost=0.00..685.45 rows=14537 width=0) (actual time=2.428..2.428 rows=15281 loops=1)
                                 Index Cond: (provider_id = 7726)
                     ->  Bitmap Heap Scan on events_daily_20170515 r_3  (cost=731.84..24128.69 rows=15409 width=20) (actual time=4.297..22.662 rows=15924 loops=1)
                           Recheck Cond: (provider_id = 7726)
                           Filter: ((date >= '2017-05-13 12:00:00'::timestamp without time zone) AND (date <= '2017-05-15 12:00:00'::timestamp without time zone))
                           Heap Blocks: exact=11318
                           ->  Bitmap Index Scan on events_daily_20170515_full_idx  (cost=0.00..727.99 rows=15409 width=0) (actual time=2.506..2.506 rows=15924 loops=1)
                                 Index Cond: (provider_id = 7726)
               ->  Hash  (cost=1085.35..1085.35 rows=574 width=14) (actual time=0.815..0.815 rows=582 loops=1)
                     Buckets: 1024  Batches: 1  Memory Usage: 37kB
                     ->  Bitmap Heap Scan on report_campaigns c  (cost=12.76..1085.35 rows=574 width=14) (actual time=0.090..0.627 rows=582 loops=1)
                           Recheck Cond: (p_id = 7726)
                           Filter: ((campaign_name)::text <> 'test'::text)
                           Heap Blocks: exact=240
                           ->  Bitmap Index Scan on report_campaigns_provider_id  (cost=0.00..12.62 rows=577 width=0) (actual time=0.062..0.062 rows=582 loops=1)
                                 Index Cond: (p_id = 7726)
 Planning time: 9651.605 ms
 Execution time: 115.092 ms


result:
 channel  |         day         | displayed
----------+---------------------+-----------
 Pin      | 2017-05-14 00:00:00 |   43434
 Pin      | 2017-05-15 00:00:00 |   3325325235