Re: Query Performance question

Tomas,

Thank you for your feedback. I am attaching the requested information. While I do not think the query is necessarily inefficient, I believe a sequence scan would be more efficient.

\d member_subscription_d

Table "public.member_subscription_d"
Column | Type | Modifiers
-----------------------+--------------------------+-----------------------------------------------------------------
subscription_key | bigint | not null default nextval('subscription_id_seq'::regclass)
version | integer | not null
date_from | timestamp with time zone |
date_to | timestamp with time zone |
newsletter_nme | character varying(50) |
subscription_platform | character varying(50) |
subscription_value | character varying(255) |
subscription_status | character varying(100) |
list_status | character varying(25) |
current_status | boolean |
unsubscribetoken | character varying(200) |
transaction_date | timestamp with time zone |
newsletter_sts | integer |
Indexes:
"member_subscription_key" PRIMARY KEY, btree (subscription_key)
"idx_member_subscription_d_list_status" btree (list_status)
"idx_member_subscription_d_newsletter_nme" btree (newsletter_nme)
"idx_member_subscription_d_subscription_status" btree (subscription_status)
"idx_member_subscription_d_subscription_value" btree (subscription_value)
"idx_member_subscription_d_tk" btree (subscription_key)
Referenced by:
TABLE "member_recipient_f" CONSTRAINT "member_subscription_d_recipient_f_fk" FOREIGN KEY (subscription_key) REFERENCES member_subscription_d(subscription_key)

pgahq_datamart-# FROM pg_class WHERE relname = 'member_subscription_d';
relname | relpages | reltuples
-----------------------+----------+-----------
member_subscription_d | 1383 | 63012
(1 row)

Explain output:
http://explain.depesz.com/s/OVK