David Griffiths wrote:
Yes, the query operates only on indexed columns (all numeric(10)'s).

            Column             |            Type             |
Modifiers
-------------------------------+-----------------------------+--------------
---------------
 user_account_id               | numeric(10,0)               | not null
[snip]
Indexes: user_account_pkey primary key btree (user_account_id),
Foreign Key constraints: $1 FOREIGN KEY (lang_id) REFERENCES lang(lang_id)
ON UPDATE NO ACTION ON DELETE NO ACTION,
                         $2 FOREIGN KEY (source_id) REFERENCES
source(source_id) ON UPDATE NO ACTION ON DELETE NO ACTION,
                         $3 FOREIGN KEY (user_role_id) REFERENCES
user_role(user_role_id) ON UPDATE NO ACTION ON DELETE NO ACTION


And what about commercial_entity.user_account_id. Is it indexed and what is its data type (i.e. does it match numeric(10,0))?


Also, have you run VACUUM ANALYZE lately?

Joe


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