Hi,
Thanks for ur reply. When i "commented out" the "mysql_data_seek()" function, "mysql_fetch_row()" returns me a non-NULL value (this should be the first row from the MResult). This results show that I've a valid connection and/or query. And when I call "mysql_fetch_row()" again (retrieving the 2nd row from the MResult, which is the desired row), it returns me a non-NULL value too. From this result, I know that I've not seek past the result set. However, with the addition of the "mysql_data_seek(MResult, 1)" function, a NULL value is returned. And that's where I don't know how the mistake was made. Please advice and thanks. wv -----Original Message----- From: Gelu Gogancea [mailto:[EMAIL PROTECTED]] Sent: 09 July 2002 23:03 To: Chan WieVia ICM N MC MI E3 Extern; [EMAIL PROTECTED] Subject: Re: C API: mysql_data_seek Hi, It's ok but you must retrieve data from "row". int sql_result;x,i; MYSQL_RES *MResult; MYSQL_ROW *row; MYSQL *MQuery; char SQLQuery[]; sprintf( SQLQuery, "SELECT * FROM Profile" ); sql_result = mysql_query(SQLQuery); MResult = mysql_store_result(MQuery); //mysql_store_result return in MResult not in MQuery (here was :...mysql_store_result(&MQuery)) mysql_data_seek(MResult, 1); //it's ok here...i suppose you whish to retrieve data from 2-nd "row".... row = mysql_fetch_row( MResult) ; // if you have a valid connection(or query) mysql_fetch_row should return non NULL value. i = mysql_num_fields(MResult) ; for ( x = 0 ; x < i ; x++ ) { printf("Data from MYSQL_ROW : %s \n",row[x]); } mysql_free_result( res ) ; I hope it's help. Regards, Gelu _____________________________________________________ G.NET SOFTWARE COMPANY Permanent e-mail address : [EMAIL PROTECTED] [EMAIL PROTECTED] ----- Original Message ----- From: "Chan WieVia ICM N MC MI E3 Extern" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, July 09, 2002 9:29 PM Subject: C API: mysql_data_seek > > Hi, > > I'm using the MySQL built-in C function, mysql_data_seek, for accessing a > particular row from the Result (MYSQL_RES) returned by mysql_store_result. > > int sql_result; > MYSQL_RES *MResult; > MYSQL_ROW row; > MYSQL MQuery; > char SQLQuery[]; > > sprintf( SQLQuery, "SELECT * FROM Profile" ); > sql_result = mysql_query(SQLQuery); > MResult = mysql_store_result(&MQuery); > mysql_data_seek(MResult, 1); > row = mysql_fetch_row(MResult); > > However, "row" returns NULL. I wonder if I've made any mistake in the > process. Can someone please help to check? In addition, is there any > special considerations when using this function? > > Thanks in advance. > > wv > > > > > --------------------------------------------------------------------- > 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 > > --------------------------------------------------------------------- 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
