Horton
Menu

Thread

  1. Checkboxes on MSAccess and PostgreSQL

    Valerio Santinelli <tanis@mediacom.it> — 1999-01-18T17:11:31Z

    First of all.. thanks to everybody for helping me out witht the
"sequence" stuff. :)

I've got another questions for you dudes.  When using a CheckBox in a
Form written in MSAccess that's related to a table in a
PostgreSQL database, if I simply turn its status from ON to OFF it works
fine, while if i'm doing the opposite it won't work.

I noticed that when exporting the table from MSAccess to PostgreSQL the
"yes/no" fields all became char(1) and not boolean.. maybe this could be
the problem.

I also noticed from the logs that when updating the status from ON to
OFF the UPDATE goes out with something like field_name='0'
I'm not sure it should use the "'" since it's more like a numerical, no
?

Thanks again,

Valerio Santinelli
tanis@mediacom.it

  2. Re: [GENERAL] Checkboxes on MSAccess and PostgreSQL

    Byron Nikolaidis <byronn@insightdist.com> — 1999-01-18T17:20:25Z

    
Valerio Santinelli wrote:

> First of all.. thanks to everybody for helping me out witht the
> "sequence" stuff. :)
>
> I've got another questions for you dudes.  When using a CheckBox in a
> Form written in MSAccess that's related to a table in a
> PostgreSQL database, if I simply turn its status from ON to OFF it works
> fine, while if i'm doing the opposite it won't work.
>
> I noticed that when exporting the table from MSAccess to PostgreSQL the
> "yes/no" fields all became char(1) and not boolean.. maybe this could be
> the problem.
>
> I also noticed from the logs that when updating the status from ON to
> OFF the UPDATE goes out with something like field_name='0'
> I'm not sure it should use the "'" since it's more like a numerical, no
> ?
>

Try setting the Advanced Driver Option "Bools as Char" to disabled.   This
will cause the export to use a Boolean field in postgres.

Byron

  3. Re: Was...[GENERAL] Checkboxes on MSAccess and PostgreSQL

    Robert Chalmers <robert@chalmers.com.au> — 1999-01-18T22:33:01Z

    Hi,
I'm pretty new to postgresql, but am reasonably familiar with MSAccess, and I
see here that Valerio can export tables from Access to pgsql. How is this done?
And using forms from Access related to pgsql databases?
This could be invaluable.  While I'm at it, does anyone know where there might
be some sample code for a shopping cart using pgsql as the database and php3?

Thanks for any info, especialy on getting msaccess and postgresql working
together.

Robert

Valerio Santinelli wrote:

> First of all.. thanks to everybody for helping me out witht the
> "sequence" stuff. :)
>
> I've got another questions for you dudes.  When using a CheckBox in a
> Form written in MSAccess that's related to a table in a
> PostgreSQL database, if I simply turn its status from ON to OFF it works
> fine, while if i'm doing the opposite it won't work.
>
> I noticed that when exporting the table from MSAccess to PostgreSQL the
> "yes/no" fields all became char(1) and not boolean.. maybe this could be
> the problem.
>
> I also noticed from the logs that when updating the status from ON to
> OFF the UPDATE goes out with something like field_name='0'
> I'm not sure it should use the "'" since it's more like a numerical, no
> ?
>
> Thanks again,
>
> Valerio Santinelli
> tanis@mediacom.it

--
http://www.chalmers.com.au. Publications From China in 24 different languages.
English, French, German, Russian, Arabic, Spanish, Chinese, Burmese, Bengali,
Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Persian, Swahili,
Sinhalese, Thai, Tamil, Urdu, Vietnamese. China Books for CIBTC, Beijing.

  4. Re: Was...[GENERAL] Checkboxes on MSAccess and PostgreSQL

    David Hartwig <daveh@insightdist.com> — 1999-01-18T22:57:57Z

    Robert Chalmers wrote:

> Hi,
> I'm pretty new to postgresql, but am reasonably familiar with MSAccess, and I
> see here that Valerio can export tables from Access to pgsql. How is this done?
> And using forms from Access related to pgsql databases?

You need ODBC driver for PostgreSQL.   (See
http://www.insightdist.com/psqlodbc)   Once you connect to the backend everything
is more or less the same.  There are, however, many little considerations with
regard to performance and locking.      But,  it doesn't take to much to get
started.

  5. Re: Was...[GENERAL] Checkboxes on MSAccess and PostgreSQL

    Valerio Santinelli <tanis@mediacom.it> — 1999-01-18T23:35:56Z

    
Robert Chalmers wrote:

> Hi,
> I'm pretty new to postgresql, but am reasonably familiar with MSAccess, and I
> see here that Valerio can export tables from Access to pgsql. How is this done?
> And using forms from Access related to pgsql databases?
> This could be invaluable.  While I'm at it, does anyone know where there might
> be some sample code for a shopping cart using pgsql as the database and php3?
>
> Thanks for any info, especialy on getting msaccess and postgresql working
> together.

Well.. I'm in a hurry so I'll be quick and concise.

To access the PostgreSQL database from a win32 machine you can simply install the
ODBC driver (there's a link on www.postgresql.org) and then you've got to configure
your database on the linux machine to accept calls through TCP/IP from other
machines. The way to do that is fully explained in the postgresql manual, but if
you need more help on the topic just ask and I'll try to explain everything in a
better way as soon as I get some time to write a full e-mail ;)

After you configured your database on the linux box, just create a new dataabse in
MSAccess and "connect external tables.." and tell him that you're using an ODBC
database. You'll be prompted to enter some details about the database, expecially
the IP address of the machine the database resides on and its name, then if
everything goes fine you'll end up with a list of the tables contained in your
postgresql database.

Have fun! :)

--

C'ya!

Valerio Santinelli a.k.a. TANiS
[tanis@mediacom.it]+:+[http://www.mediacom.it/~tanis]

  6. Re: Was...[GENERAL] Checkboxes on MSAccess and PostgreSQL

    Robert Chalmers <robert@chalmers.com.au> — 1999-01-19T01:44:05Z

    Great,
Thanks chaps. I have it working. Now just have to get used to it so I am not looking up
the instructions every time I make a move.

I can load tables, and create tables in an existing database - which I have running on
the server, and probably even update the data.. but is it possible to create a database
on the server from Access? That way, I could do all the creation and updating from the
Access machine. It's not a major headache anyway. Indeed no problem at all, as I can
obviously just go to Unix, create a database, then back to Access to populate it and
update it.

Anyway, thanks for the pointers. Saved me HOURS AND HOURS ....

Best regards
Robert


Valerio Santinelli wrote:

> Robert Chalmers wrote:
>
> > Hi,
> > I'm pretty new to postgresql, but am reasonably familiar with MSAccess, and I
> > see here that Valerio can export tables from Access to pgsql. How is this done?
> > And using forms from Access related to pgsql databases?
> > This could be invaluable.  While I'm at it, does anyone know where there might
> > be some sample code for a shopping cart using pgsql as the database and php3?
> >
> > Thanks for any info, especialy on getting msaccess and postgresql working
> > together.
>
> Well.. I'm in a hurry so I'll be quick and concise.
>
> To access the PostgreSQL database from a win32 machine you can simply install the
> ODBC driver (there's a link on www.postgresql.org) and then you've got to configure
> your database on the linux machine to accept calls through TCP/IP from other
> machines. The way to do that is fully explained in the postgresql manual, but if
> you need more help on the topic just ask and I'll try to explain everything in a
> better way as soon as I get some time to write a full e-mail ;)
>
> After you configured your database on the linux box, just create a new dataabse in
> MSAccess and "connect external tables.." and tell him that you're using an ODBC
> database. You'll be prompted to enter some details about the database, expecially
> the IP address of the machine the database resides on and its name, then if
> everything goes fine you'll end up with a list of the tables contained in your
> postgresql database.
>
> Have fun! :)
>
> --
>
> C'ya!
>
> Valerio Santinelli a.k.a. TANiS
> [tanis@mediacom.it]+:+[http://www.mediacom.it/~tanis]

--
http://www.chalmers.com.au. Publications From China in 24 different languages.
English, French, German, Russian, Arabic, Spanish, Chinese, Burmese, Bengali,
Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Persian, Swahili,
Sinhalese, Thai, Tamil, Urdu, Vietnamese. China Books for CIBTC, Beijing.

  7. Re: [GENERAL] Checkboxes on MSAccess and PostgreSQL

    Valerio Santinelli <tanis@mediacom.it> — 1999-02-24T11:25:01Z

    Jose' Soares wrote:

> Valerio Santinelli wrote:
> >
> > First of all.. thanks to everybody for helping me out witht the
> > "sequence" stuff. :)
> >
> > I've got another questions for you dudes.  When using a CheckBox in a
> > Form written in MSAccess that's related to a table in a
> > PostgreSQL database, if I simply turn its status from ON to OFF it works
> > fine, while if i'm doing the opposite it won't work.
> >
> > I noticed that when exporting the table from MSAccess to PostgreSQL the
> > "yes/no" fields all became char(1) and not boolean.. maybe this could be
> > the problem.
> >
> > I also noticed from the logs that when updating the status from ON to
> > OFF the UPDATE goes out with something like field_name='0'
> > I'm not sure it should use the "'" since it's more like a numerical, no
> > ?
> >
> > Thanks again,
> >
> > Valerio Santinelli
> > tanis@mediacom.it
>
> You have to uncheck "Bools as Char" on Advanced options Driver on ODBC
> Data Source Administrator
> and then you have to create an operator for bool=int4 like this:
>
> /* M$Access tratta il valore booleano come un intero 0=false o -1=true
>    mentre invece PostgreSQL lo tratta come una stringa:
>    'true','t','1','y','yes','false','f','0','n','no'
>    Questo script crea l'operatore = e implicitamente <> per bool e int4
>    per compatibilita' con M$Access.
> */
> drop operator = (bool,int4);
> drop function MsAccessBool(bool,int4);
>
> create function MsAccessBool(bool,int4)
>   returns bool
>   as ''
>   language 'internal';
>
> create operator = (
>         leftarg=bool,
>         rightarg=int4,
>         procedure=MsAccessBool,
>         commutator='=',
>         negator='<>',
>         restrict=eqsel,
>         join=eqjoinsel
>         );

Some time ago I got this message and I tried to make booleans work with my
database, but there's been no way to do that. First of all, during the
"DROP MsAccessBool" my PostgreSQL database engine reports that the function
can't be dropped because it's an internal (built-in).
Second, it seems to replace it by creating the function (i don't know how it
could if the function already exists..) but then again when I'm updating a
record in a table with booleans it simply doesn't let me do that. I'm
desperately seeking help now.. I don't really know how to solve this problem.

Thanks in advance

Valerio Santinelli
tanis@mediacom.it