[freetds] SQL_NO_DATA or SQL_SUCCESS
James K. Lowden
jklowden at freetds.org
Wed Feb 27 19:35:42 EST 2008
Peter Deacon wrote:
> > (I do not know what a "searched update" is. I guess it means one with
> > a WHERE clause. If I issue "UPDATE tablename SET columname = 0" on a
> > table with zero rows, it affects zero rows. What should the driver
> > return then?)
> Yea, searched updates are exactly that.
What should I expect if the following are executed as two batches?
CREATE TABLE B (b int)
DELETE FROM B
It's not "searched", but it affects no rows. SQL_SUCCESS or SQL_NO_DATA?
It's very hard for me to believe there's any *point* in distinguishing
cases like this. It smells like documentation to cover a bug, not a
If you want to know if there's a resultset, examine at the column count.
If you want to know if rows were affected, examine the rowcount. The
purpose of SQL_NO_DATA is (obviously, if you ask me) to let you know
something else: when you've read the last row.
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