i created index already. how can i decrease the query time more. number of record is over 1 million. the following is the query plan.
Group (cost=34082.59..34085.62 rows=61 width=112) -> Sort (cost=34082.59..34082.59 rows=607 width=112) -> Nested Loop (cost=0.00..34054.51 rows=607 width=112) -> Nested Loop (cost=0.00..125.64 rows=2 width=108) -> Nested Loop (cost=0.00..8.84 rows=1 width=22) -> Index Scan using tbl_member_pkey on tbl_member d (cost=0.00..5.14 rows=1 width=18) -> Index Scan using tbl_company_pkey on tbl_company c (cost=0.00..3.68 rows=1 width=4) -> Index Scan using tbl_adpage_pkey on tbl_adpage b (cost=0.00..112.65 rows=332 width=86) -> Index Scan using tbl_showlog_adpage_id_idx on tbl_showlog a (cost=0.00..20370.75 rows=5466 width=4) ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
