Hi I think you need to read a book on C since C has no notion of a boolean value
At 11:40 01/03/2002 +0000, DL Neil wrote: >Hi Chetan, > >Suppose I have a table : > >mysql> select * from flag_test; >+--------+------+ >| name | flag | >+--------+------+ >| Chetan | Y | >+--------+------+ >1 row in set (0.00 sec) > >I am setting/unsetting the flag field from the api's ; > >Now if the flag is already set and I executes the Query from the Mysql >Command prompt it shows : >MySQL> update flag_test set flag='Y' where name='chetan'; >Query OK, 0 rows affected (0.00 sec) >Rows matched: 1 Changed: 0 Warnings: 0 > >but if the same Query I run from the C program and if I check the return >value of mysql_affected_rows(Mysql *) it returns 0 , >Actually I am doing something based on it's return value but Instead of >Rows matched: 1 > > >=The function only returns the number of rows "affected"/updated, not >the number of rows "matched" (in the WHERE clause). In this case, if the >flat was already "Y" (your interaction from the MySQL client), then the >C program will not have had a change to make - and not counted it as >"affected". > >=Change the flag to non-Y, and then re-run the C prog. > >=Regards, >=dn > > > >--------------------------------------------------------------------- >Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > >To request this thread, e-mail <[EMAIL PROTECTED]> >To unsubscribe, e-mail <[EMAIL PROTECTED]> >Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php Regards John, Former MySQL Developer ----- [EMAIL PROTECTED] http://www.rygannon.com --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
