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Re: Access - ODBC - index strange bug

From: "Philippe Lang" <philippe(dot)lang(at)attiksystem(dot)ch>
To: <pgsql-odbc(at)postgresql(dot)org>
Subject: Re: Access - ODBC - index strange bug
Date: 2004-04-07 06:39:48
Message-ID: 6C0CF58A187DA5479245E0830AF84F4208029C@poweredge.attiksystem.ch (view raw or flat)
Thread:
Lists: pgsql-odbc
Hello,

I was able to reproduce the bug, here it is:

---------------------------------
CREATE TABLE public.test
(
  id serial PRIMARY KEY,
  code int4,
  f1 int4,
  f2 varchar(50),
  f3 text
) WITHOUT OIDS;

CREATE INDEX test_code ON public.test USING btree (code);

INSERT INTO public.test(code, f1, f2, f3) VALUES(10, 1, 'test1', 'ok1');
INSERT INTO public.test(code, f1, f2, f3) VALUES(20, 12, 'test2',
'ok2');
INSERT INTO public.test(code, f1, f2, f3) VALUES(30, 123, 'test3',
'ok3');
---------------------------------

- Link this table to an Access database, with the "Postgresql" normal
driver. (Others don't work for me)

- Open the linked table.

- Type 20 in column code of the "insert" line, and insert the record.
All values are mixed up, and the newly inserted line seems to have the
same values as the second record. (Because they have the same code?)

- Close the table, and reopen it: the last inserted line has correct
values.

- Type 31 in the same column now, things are fine. (Because code 31 was
not used before?)

- Take away the index, and the bug disappears. No need to refresh the
table links or whatever.


Can anyone reproduce that?


Philippe


My configuration:
-----------------
Postgresql 7.3.4 / 7.4.2
Latest snapshot from psqlodbc.dll
MS Access 2000
MDAC 2.7 / 2.8


-----Message d'origine-----

Hello,

I experience a strange bug when inserting a row into a table in which I
have recently added a few indexes.
This table is linked to a MS Access database through ODBC (Latest known
snapshot from Hiroshi).

When I insert a row, the serial id and different other columns are
completely mixed up. Onscreen, the inserted line inherits some values
from past lines (that have similar values), even the primary key! Things
get back to normal when I do a complete requery of the table, all values
are correct, as they should always have been.

Everything works fine if I delete the indexes.

I made a try with PG 7.3.4 and 7.4.2, same problem.

I have tried playing with the driver options, especially the one related
to indexes, without success.

Did anyone have the same problem already?


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Subject: Re: PGSQL ODBC Install problems under windows
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Subject: Access - ODBC - index strange bug

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