I've got a DELETE FROM that seems to run forever, pegging the CPU at
100%. I can't figure out why it's slow. Any clues?
stage=# EXPLAIN DELETE FROM EG_INVOICE WHERE PERIOD_ID = 1017506;
Index Scan using ix22f7bc70c7de2059 on eg_invoice (cost=0.00..105.39
rows=3955 width=6) Index Cond: (period_id = 1017506)
stage=# select count(*) FROM EG_INVOICE;
55376
stage=# select count(*) FROM EG_INVOICE where PERIOD_ID = 1017506;; 4603
stage=# \d EG_INVOICE; Table "public.eg_invoice" Column | Type | Modifiers
----------------+------------------------+-----------invoice_id | integer | not nullcso_id |
integer | not nullperiod_id | integer | not nullinvoice_number | character
varying(192)|invoice_date | date |plan_name | character varying(128) |invoice_style | integer
| not nullaccount_id | integer |
Indexes: "eg_invoice_pkey" PRIMARY KEY, btree (invoice_id) "invoice_number_idx" btree (invoice_number)
"ix22f7bc70c7de2059"btree (period_id)
Foreign-key constraints: "fk22f7bc70c7de2059" FOREIGN KEY (period_id) REFERENCES
eg_billing_period(period_id) "invoice_to_account" FOREIGN KEY (account_id) REFERENCES
eg_account(account_id) "invoice_to_cso" FOREIGN KEY (cso_id) REFERENCES eg_cso(cso_id)
stage=# vacuum analyze verbose EG_INVOICE;
...
INFO: "eg_invoice": scanned 584 of 584 pages, containing 55376 live
rows and 0 dead rows; 3000 rows in sample, 55376 estimated total rows
PostgreSQL 8.1.8 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC)
4.1.1 20070105 (Red Hat 4.1.1-51)
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