Re: Sqlite 3 pdo update query problem

Amy Gibbs <amy@xxxxxxxxxxxxxxxxxxxxxx> · Wed, 20 Aug 2008 12:04:18 +0100

OK, I found one problem, the database file was not writeable, I added  
this code to find the error:

$sesdb->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);

However, I now get the following error:
Warning: PDO::exec() [function.PDO-exec]: SQLSTATE[HY000]: General  
error: 14 unable to open database file in/home/amy2203/public_html/ 
willowtreecrafts/seweblink/seinvaudit.php on lin

Sorry to have such a basic problem!

On 20 Aug 2008, at 11:45, Evert Lammerts wrote:

What happens if you try the UPDATE before a SELECT?

$sesdb = new PDO('sqlite:file.sqlite3');
var_dump($sesdb->exec("UPDATE ZITEM SET ZQUANTITY=0 WHERE  
ZPRODUCTID=1"));

On Wed, Aug 20, 2008 at 12:42 PM, Evert Lammerts
<evert.lammerts@xxxxxxxxx> wrote:
Sorry, I'm out of options. Hopefully somebody on the list has a  
little
more experience with PDO.

On Wed, Aug 20, 2008 at 12:26 PM, Amy Gibbs <amy@xxxxxxxxxxxxxxxxxxxxxx 
> wrote:
It's still not working :(
$query="SELECT ZNAME, ZQUANTITY, ZPRODUCTID FROM ZITEM WHERE  
ZCategory !=
14";
$statement= $sesdb->query($query);
$result=$statement->fetchAll();
$statement=null;
foreach ($result as $product) {
$prodname=$product[0];
$prodqty = $product[1];
$prodid=$product[2];

$sql = "UPDATE ZITEM SET ZQUANTITY=0 WHERE ZPRODUCTID={$prodid}";
$sesdb->exec($sql);

On 20 Aug 2008, at 11:10, Evert Lammerts wrote:

A little time on google told me that if you want to do a write  
after a
read (or the other way around) you need to free up the query  
resource
- apparently they hold read / write locks.

so, free up $statement before doing a write:

$sesdb = new PDO('sqlite:file.sqlite3');

$query="SELECT ZNAME, ZQUANTITY, ZPRODUCTID FROM ZITEM WHERE  
ZCategory !=
14";

$statement= $sesdb->query($query);
$result=$statement->fetchAll();

$statement=null;

foreach ($result as $product) {
$prodname=$product[0];
$prodqty = $product[1];
$prodid=$product[2];

$sql = "UPDATE ZITEM SET ZQUANTITY='0' WHERE  
ZPRODUCTID='{$prodid}'";

$sesdb->exec($sql);

}

On Wed, Aug 20, 2008 at 11:49 AM, Amy Gibbs <amy@xxxxxxxxxxxxxxxxxxxxxx 
>
wrote:

No errors reported, but it's not updating the db,

error_reporting(E_ALL);

$sesdb = new PDO('sqlite:file.sqlite3');

$query="SELECT ZNAME, ZQUANTITY, ZPRODUCTID FROM ZITEM WHERE  
ZCategory !=

14";

$statement= $sesdb->query($query);

$result=$statement->fetchAll();

foreach ($result as $product) {

$prodname=$product[0];

$prodqty = $product[1];

$prodid=$product[2];

$sql = "UPDATE ZITEM SET ZQUANTITY='0' WHERE ZPRODUCTID={$prodid}";

$sesdb->exec($sql);

}

On 20 Aug 2008, at 10:11, Evert Lammerts wrote:

can you put

error_reporting(E_ALL);

somewhere above the query and check if there's some output?

On Wed, Aug 20, 2008 at 11:02 AM, Amy Gibbs <amy@xxxxxxxxxxxxxxxxxxxxxx 
>

wrote:

still not working,

$sesdb = new PDO('sqlite:file.sqlite3');

$query="SELECT ZNAME, ZQUANTITY, ZPRODUCTID FROM ZITEM WHERE  
ZCategory !=

14";

$statement= $sesdb->query($query);

$result=$statement->fetchAll();

foreach ($result as $product) {

$prodname=$product[0];

$prodqty = $product[1];

$prodid=$product[2];

$sql = "UPDATE ZITEM SET ZQUANTITY='0' WHERE ZPRODUCTID={$prodid}";

$sesdb->exec($sql);

}

On 20 Aug 2008, at 09:59, Evert Lammerts wrote:

$sql = "UPDATE ZITEM SET ZQUANTITY='0' WHERE ZPRODUCTID='". 
$prodid."'";

Try to unquote $prodid:

$sql = "UPDATE ZITEM SET ZQUANTITY='0' WHERE ZPRODUCTID={$prodid}";

Evert

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