Ah! pgsql query leads to evil - Mailing list pgsql-admin
From | Jamie Lawrence |
---|---|
Subject | Ah! pgsql query leads to evil |
Date | |
Msg-id | 20031128151212.GD24082@clueinc.net Whole thread Raw |
Responses |
Re: Ah! _psql_ query leads to evil
Re: Ah! pgsql query leads to evil |
List | pgsql-admin |
OK, my baseline tables are a states table, from commonly available sources, and cities, from the Census. \d's are: cal=# \d states Table "public.states" Column | Type | Modifiers ------------+-----------------------------+-------------------------------------------------------- id | integer | not null default nextval('public.states_id_seq'::text) name | text | abbr | text | createdate | timestamp without time zone | default now() moddate | timestamp without time zone | Indexes: states_pkey primary key btree (id) Triggers: timestamp_tr cal=# \d cities Table "public.cities" Column | Type | Modifiers ------------+-----------------------------+-------------------------------------------------------- id | integer | not null default nextval('public.cities_id_seq'::text) name | text | createdate | timestamp without time zone | default now() moddate | timestamp without time zone | states_id | integer | Indexes: cities_pkey primary key btree (id) Foreign Key constraints: valid_state FOREIGN KEY (states_id) REFERENCES states(id) ON UPDATE NO ACTION ON DELETE NO ACTION Triggers: timestamp_tr (Timestamps are an ease of use thing - we can purge data if someone screws up easily. Otherwise, 'id' is defined as SERIAL PRIMARY KEY, states_id is INT REFERECES states) I enter a query like so, and get the following errors: cal=# select * from states, cities; server sent binary data ("B" message) without prior row description ("T" message) server sent binary data ("B" message) without prior row description ("T" message) server sent data ("D" message) without prior row description ("T" message) server sent binary data ("B" message) without prior row description ("T" message) server sent data ("D" message) without prior row description ("T" message) server sent data ("D" message) without prior row description ("T" message) server sent data ("D" message) without prior row description ("T" message) Enter data to be copied followed by a newline. End with a backslash and a period on a line by itself. >> \. unexpected response from server; first received character was "a" lost synchronization with server, resetting connection Asynchronous NOTIFY '2003-11-26 18:15:20.548647' from backend with pid 30 received. Asynchronous NOTIFY 'n' from backend with pid 1969386866 received. Asynchronous NOTIFY '2003-11-26 18:15:20.548647' from backend with pid 30 received. Asynchronous NOTIFY 't' from backend with pid 1836020325 received. Asynchronous NOTIFY '' from backend with pid 1986359929 received. I know that's a pathological query, and I performed it only because Software Gone Wrong did it, and I was looking to see what happened. The result just seems really, really wrong, and I'm wondering if anyone has seen something like that before. This is PG 7.3.4, on Debian/stable on a DEC box (compiled here, but we didn't do anything strange to it). -j -- Jamie Lawrence jal@jal.org Prediction is very difficult, especially of the future. - Niels Bohr
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