FreeTDS Development Group

[Alejandro Guerrieri <alejandro.guerrieri AT gmail.com>]

True. Before the fix passing it with &data[i].data didn't work (probably
because the .format mess was overwriting the .data pointer).
Regards,

Alejandro

On Wed, Apr 29, 2009 at 11:18 AM, Frediano Ziglio <freddy77 AT gmail.com>wrote:

> 2009/4/29 Alejandro Guerrieri <alejandro.guerrieri AT gmail.com>:
> > Frediano,
> > Thanks for replying.
> >
> > I've just solved the issue. The problem was with the CS_DATAFMT structure
> > member not being a pointer. I've replaced by:
> >
>
> Mmm.... quite strange... I think that real problem is ct_bind, on
> first mail you have
>
> ct_bind(conn->command, i+1, &data[i].format, &data[i].data,
> &data[i].size, &data[i].ind);
>
> while on second
>
> ct_bind(conn->command, i+1, data[i].format, data[i].data,
> &data[i].size, &data[i].ind);
>
> you have changed data[i].format cause you used a pointer but
> data[i].data change is the real fix.
>
> freddy77
>
> > struct data_s {
> >
> > CS_CHAR *data;
> >
> > CS_DATAFMT *format;
> >
> > CS_INT size;
> >
> > CS_SMALLINT ind;
> >
> > };
> >
> > struct data_s *data;
> >
> > And fixed the references on the code:
> >
> > data[i].format = malloc(sizeof(CS_DATAFMT));
> >
> > memset(data[i].format, 0, sizeof(CS_DATAFMT));
> >
> > if (ct_describe(conn->command, i+1, data[i].format) != CS_SUCCEED) {
> >
> > error(0, "Error fetching column description");
> >
> > free(data);
> >
> > return -1;
> >
> > }
> >
> > data[i].format->maxlength++;
> >
> > data[i].data = malloc(data[i].format->maxlength);
> >
> > data[i].format->datatype = CS_CHAR_TYPE;
> >
> > data[i].format->format = CS_FMT_NULLTERM;
> >
> > ct_bind(conn->command, i+1, data[i].format, data[i].data,
> >
> > &data[i].size, &data[i].ind);
> >
> > And that was it :)
> >
> > Regarding the select, it's a simple command:
> >
> > ct_command(conn->command, CS_LANG_CMD,
> >
> > "SELECT col1, col2, col3 FROM table",
> >
> > CS_NULLTERM, CS_UNUSED);
> >
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