RE: ODBC handling of bools?

Lists: pgsql-interfaces
From: Stephen Davies <scldad(at)sdc(dot)com(dot)au>
To: pgsql-interfaces(at)postgresql(dot)org
Subject: ODBC handling of bools?
Date: 2000-12-17 09:35:42
Message-ID: 200012170935.UAA13378@mustang.sdc.com.au
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Lists: pgsql-interfaces

Hello.

I have a VB5 application which uses ODBC 6.5 (2/4/00) to access a Postgresql 7.0.2
database.

Everything works just fine except for booleans.

I manually generate the SQL to be sent to the ODBC driver ]
eg select * from member where weekends
or select * from member where weekends=true

but this fails because somewhere in the driver, this is translated to
select * from member where weekends <> 0 and this causes an error
because there is no operator to compare bools and integers.

I have tried with the "bools as char" option on and off with no effect.

I thought that this stuff had been fixed a couple of years ago. Did it
break again or am I just missing something basic?

How does one make bool tests work ?

Cheers and thanks,
Stephen Davies

========================================================================
Stephen Davies Consulting scldad(at)sdc(dot)com(dot)au
Adelaide, South Australia. Voice: 08-8177 1595
Computing & Network solutions. Fax: 08-8177 0133


From: "Francis Solomon" <francis(at)stellison(dot)co(dot)uk>
To: "Stephen Davies" <scldad(at)sdc(dot)com(dot)au>, <pgsql-interfaces(at)postgresql(dot)org>
Subject: RE: ODBC handling of bools?
Date: 2000-12-18 13:39:22
Message-ID: NEBBIFFPELJMCJAODNPKGEAMCEAA.francis@stellison.co.uk
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Hi Stephen,

To test boolean values I use:

SELECT * FROM member WHERE weekends='t'

... and it works just fine through the ODBC driver.
(ODBC 6.50, PostgreSQL 7.02).

Hope this helps

Francis Solomon

> Hello.
>
> I have a VB5 application which uses ODBC 6.5 (2/4/00) to
> access a Postgresql 7.0.2
> database.
>
> Everything works just fine except for booleans.
>
> I manually generate the SQL to be sent to the ODBC driver ]
> eg select * from member where weekends
> or select * from member where weekends=true
>
> but this fails because somewhere in the driver, this is translated to
> select * from member where weekends <> 0 and this causes an error
> because there is no operator to compare bools and integers.
>
> I have tried with the "bools as char" option on and off with
> no effect.
>
> I thought that this stuff had been fixed a couple of years
> ago. Did it
> break again or am I just missing something basic?
>
> How does one make bool tests work ?