Hi guys, I've got the following Query:
WITH query_p AS ( SELECT CAST(6667176 AS BIGINT) AS client_id), clients AS ( SELECT client.id ,client.job_share_mode FROM customers AS client WHERE (client.clientid = (SELECT qp.client_id FROM query_p AS qp)) AND NOT client.is_demo AND NOT client.deleted ) Select qp.client_id, (SELECT COUNT(0) FROM customers AS c WHERE (c.clientid = qp.client_id) AND NOT c.deleted) AS client_count FROM query_p AS qp *Explain Analyze:* CTE Scan on "query_p" "qp" (cost=0.01..1060.57 rows=1 width=8) (actual time=4065.244..4065.246 rows=1 loops=1) CTE query_p -> Result (cost=0.00..0.01 rows=1 width=0) (actual time=0.002..0.003 rows=1 loops=1) SubPlan 2 -> Aggregate (cost=1060.53..1060.54 rows=1 width=0) (actual time=4065.229..4065.229 rows=1 loops=1) -> Index Scan using "clientid_customers" on "customers" "c" (cost=0.00..1059.01 rows=607 width=0) (actual time=9.105..4063.728 rows=2513 loops=1) Index Cond: ("clientid" = "qp"."client_id") Filter: (NOT "deleted") Rows Removed by Filter: 1068 Total runtime: 4075.753 ms Why a search for "client_id" is so slow?? *Table customers:* Table "public.customers" Column | Type | Modifiers ------------------------+-----------------------------+----------------------------------------------------------------- id | bigint | not null default "nextval"('"customers_seq"'::"regclass") clientid | bigint | not null default 0 name_first | character varying(80) | default ''::character varying name_last | character varying(80) | default ''::character varying company | character varying(255) | default ''::character varying *Index clientid_customers:* CREATE INDEX clientid_customers ON customers ( "clientid" ); Thanks! Patrick