[freetds] Buffering problem
James K. Lowden
jklowden at freetds.org
Mon Jul 10 07:43:17 EDT 2006
ZIGLIO, Frediano, VF-IT wrote:
> BUF_FULL is returned if buffering is turned on and reading the next row
> would cause the buffer to be exceeded. In this case, no row will have
> been read. To read any more rows, at least one row must first be pruned
> from the top of the row buffer by calling dbclrbuf.
> so BUF_FULL is not returned if buffer is already full but only if buffer
> will be full
How does FreeTDS differ from Microsoft's behavior?
As I read the specification, "would ... be exceeded" means "is full". If
the buffer holds 3 rows, dbnextrow() returns BUF_FULL when trying to read
the 4th row.
To me, dbnextrow() is correct: it checks to see if there is room in the
buffer. If not, it returns BUF_FULL without reading a row.
(I'm hoping to fix dbnextrow() and dbresults() today to remove
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