The following bug has been logged online:
Bug reference: 5234
Logged by: Sergey Burladyan
Email address: eshkinkot@gmail.com
PostgreSQL version: 8.3.8
Operating system: Debian GNU/Linux 5.0.3 (lenny) + testing
Description: ALTER TABLE ... RENAME COLUMN change view definition
incorrectly
Details:
reported by Weed at http://www.sql.ru/forum/actualthread.aspx?tid=717835
(Russian)
Example:
create table a (i int, v text);
create table b (j int, v text);
create view v_using as select * from a left join b using (v);
alter table a rename v to o;
\d v_using
CREATE TABLE
CREATE TABLE
CREATE VIEW
ALTER TABLE
View "public.v_using"
Column | Type | Modifiers
--------+---------+-----------
v | text |
i | integer |
j | integer |
View definition:
SELECT a.o AS v, a.i, b.j
FROM a
LEFT JOIN b USING (v);
View is still working, but it text definition is incorrect:
t1=> select * from v_using ;
v | i | j
---+---+---
(0 rows)
t1=> SELECT a.o AS v, a.i, b.j
t1-> FROM a
t1-> LEFT JOIN b USING (v);
ERROR: 42703: column "v" specified in USING clause does not exist in left
table
LOCATION: transformFromClauseItem, parse_clause.c:813
If you dump database in this state, when you cannot restore this dump
without manual fix:
$ pg_dump -Fc -f dump t1
$ pg_restore dump | grep -A2 VIEW
-- Name: v_using; Type: VIEW; Schema: public; Owner: seb
--
CREATE VIEW v_using AS
SELECT a.o AS v, a.i, b.j FROM (a LEFT JOIN b USING (v));
$ LANG=C sudo -u postgres pg_restore -c -d t1 dump
. . .
pg_restore: [archiver (db)] could not execute query: ERROR: column "v"
specified in USING clause does not exist in left table
Command was: CREATE VIEW v_using AS
SELECT a.o AS v, a.i, b.j FROM (a LEFT JOIN b USING (v));
. . .
