Re: Only fails when logging is off

Here is a problem that disappears when logging is on:
Attempting to issue the following SQL query from Access '97 against a postgres database:

SELECT tcompanies.company_id, CStr([tcompanies].[login_id]) & ": " & [tcompanies].[name] AS Expr1, tcompanies.name
FROM tcompanies
WHERE tcompanies.active
ORDER BY tcompanies.name;

column 'active' is boolean

2 messages ppear in succession
1. ODBC Call failed
2. ERROR: Unable to identify an operator "=" for types "boolean" and "integer"
You will have to retype this query using an explicit cast (#7)

Any ideas?

Fred Parkinson
Association of Bay Area Governments

--- Fred Parkinson <FredP(at)abag(dot)ca(dot)gov> wrote:
> Here is a problem that disappears when logging is
> on:

What version of PostgreSQL is this?

> 2. ERROR: Unable to identify an operator "=" for
> types "boolean" and "integer"
> You will have to retype this query using an
> explicit cast (#7)
>
Sounds like an old problem. Try running the following
code in in PostgreSQL:

CREATE FUNCTION MsAccessBool (bool, int4) RETURNS BOOL
AS '
BEGIN
IF $1 ISNULL THEN
RETURN NULL;
END IF;

IF $1 IS TRUE THEN
IF $2 <> 0 THEN
RETURN TRUE;
END IF;
ELSE
IF $2 = 0 THEN
RETURN TRUE;
END IF;
END IF;
RETURN FALSE;
END;
' LANGUAGE 'plpgsql';

CREATE OPERATOR = (
LEFTARG = BOOL,
RIGHTARG = INT4,
PROCEDURE = MsAccessBool,
COMMUTATOR = '=',
NEGATOR = '<>',
RESTRICT = EQSEL,
JOIN = EQJOINSEL
);

If this doesn't help you, please post your ODBC driver
settings. I assume these are boolean fields in
PostgreSQL: they should show as "yes/no" in Access.
If they do not, try relinking your tables after
running the above code.

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