On Sat, 6 Nov 2010 21:29:58 -0700 (PDT), cricketfan
<srtedul...@yahoo.co.in> wrote:
> I am trying to select some columns from a table and use that to
>update another column in the same table using prepare/step/reset/finalize
>methods. However, when I use the update statement while stepping it is
>executing the flow 2 times.
There is no need to do this in a loop with a cursor.
Whenever possible, use the power of SQL set operations.
As far as I can tell, an alternative solution to
your problem could be (pseudocode):
delSql = "UPDATE table1
SET ghi = ?
WHERE def IN (
SELECT ref
FROM table1
WHERE abc = ?
);";
prepare(db, delSql, ..., stmt, ...);
bind_int(stmt, ..., ghivalue);
bind_text(stmt, ..., abcvalue);
step(stmt);
reset(stmt);
finalize(stmt);
Hope this helps.
--
( Kees Nuyt
)
c[_]
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