Re: [GENERAL] ODBC-client->Linux-server: datatype boolean not recognized?

I had the same problem using m$access as client because m$access treats the
boolean value like an integer
0=false and -1=true while PostgreSQL treats the same value like a string (
'true','t','1','y','yes','false','f','0','n','no').
I created the following function and operator and now it works.

create function MsAccessBool(bool,int4) returns bool
as '' language 'internal';

create operator = (
leftarg=bool,
rightarg=int4,
procedure=MsAccessBool,
commutator='=',
negator='<>',
restrict=eqsel,
join=eqjoinsel
);

José

PS: remember to uncheck the field: "Bools as char" in the ODBC manager.

Jelle Ruttenberg ha scritto:

> Hello all,
>
> I'm trying to connect from a ODBC-client to PostgreSQL on a Linux-server.
> All is going well, except that the ODBC-client seems not to recognize the
> PostgreSQL boolean-datatype.
>
> Is this really caused by PostgreSQL? If yes: is there a workaround, like
> altering the datatypename in the proper places (pg_type?)? If no: then it
> is another problem and can somebody give a hint?
>
> Thanks,
> Jelle.
>
> I tested and encountered it in the following testsituations:
>
> Situation 1:
> Client: Mac via OpenLink ODBC-Client
> Server: Linux RH 6.0 via OpenLink Requestbroker
> Result: it looks like PostgreSQL-boolean is converted to SQL_C_CHAR
>
> Situation 2:
> Client: NT with psqlODBC
> Server: same Linux
> Result: in MS-Query:
> - viewing the table-definitions, it comes with the message that it
> doesn't recognize datatype 'bool'
> - selecting values it looks like PostgreSQL-boolean is converted to a
> numeric
>
> PostgreSQL: 6.5.1
>
> --------------------------------------------------------------
> NEROC Publishing Solutions
>
> Jelle Ruttenberg
>
> De Run 1131, 5503 LB Veldhoven Phone : +31-(0)40-2586641
> P.O.Box 133, 5500 AC Veldhoven Fax : +31-(0)40-2541893
> The Netherlands E-mail : ruttenberg(at)neroc(dot)nl
> --------------------------------------------------------------
>
> ************