From: | Ludek Finstrle <luf(at)pzkagis(dot)cz> |
---|---|
To: | "Hu, Ming (Ivan)" <huming(at)lucent(dot)com> |
Cc: | pgsql-odbc(at)postgresql(dot)org |
Subject: | Re: Why SQLBindCol can not get back the c string length. |
Date: | 2006-07-24 09:06:41 |
Message-ID: | 20060724090641.GB19452@soptik.pzkagis.cz |
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Thread: | |
Lists: | pgsql-odbc |
> Why I can not get the actual length from StrLen_or_IndPtr,the last paramter
> of SQLBindCol(). The value of it always keep the input one.
When you want to get the value? You can't get it after SQLBindCol() call.
Please read the specification at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/odbcsqlbindcol.asp
If I misunderstand your notice please correct me.
> Also, for varchar string, the return c string is with right length, while
> for fixed chars in DB, the returned c string is
> always with the fixed char length in DB, there are space appended in c
> string.
I see you have no clue what's the difference betwwen char and varchar
type in PostgreSQL. Please read the PostgreSQL manual. It isn't ODBC
related (http://www.postgresql.org/docs)
Regards,
Luf
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