[freetds] trailing spaces
Lowden, James K
LowdenJK at bernstein.com
Tue May 25 17:18:23 EDT 2004
> From: freetds-bounces at lists.ibiblio.org
> [mailto:freetds-bounces at lists.ibiblio.org]On Behalf Of RCS Computers
> Sent: May 25, 2004 3:39 PM
> I have found several posts that talk about trailing spaces in
> output from
> the freetds driver. I am connecting to a sybase database
> with php and from
> what I read, the reason I am getting spaces after the data I want is
> because the column is a CHAR column and the size of the data
> is < the size of the column.
> So, I would like to know if I can change the freetds in some
> way, either
> configuration or recompiliation, so that it mimics the Sybase
> ODBC driver and trims the data of spaces automatically?
>From the driver's point of view, whether or not character data are blank-padded and/or null-terminated is a function of how the column is bound to the host's memory buffer. Cf. dbbind().
AFAIK, the FreeTDS db-lib dbbind() works correctly, and if you're using the mssql extension with PHP, then you're using db-lib. It may well be that PHP binds character data differently, depending on which driver it's using; I don't know. That would explain what you're seeing.
If you're seeing different behavior driver-for-driver i.e., the FreeTDS ODBC driver gives different results from Sybase's ODBC driver, then that would indicate a problem with FreeTDS's implementation. Once it's narrowed down to exactly what's wrong, I doubt it would be difficult to fix.
Unless it's determined that the FreeTDS bind function isn't working as advertised, you're going to have to look to PHP for a remedy. That might involve changing its bind parameters; if so, it will almost certainly involve discovery and recompilation.
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