Description:
------------
Hi,

I think PDO should return the getColumnMeta info even if no data is returned, so long as SQL parses correctly and table exists. I believe that all of the non-PDO database extensions work like this.

I don't know whether this is an SQLite issue or PDO issue.

Thanks, John Lim

Reproduce code:
---------------
<?php   
function GetColumnMeta($db) 
{
$st2 = $db->prepare("select * from hash ");
$ok = $st2->execute();
echo "<h3>GetColumnMeta</h3>";
for ($i=0; $i<2; $i++) {
	$col = $st2->getColumnMeta($i);
	var_dump($col);echo "<br>";
	}
}

$db = new PDO('sqlite:' . getenv('HOME') . "/.web-watch.sql3");
$db->query('create table hash(url primary key, hash)');
$db->query('delete from hash');
GetColumnMeta($db);

$db->query("insert into hash (url, hash) values ('http://yahoo.com/','100')");
GetColumnMeta($db);  
?> 

Expected result:
----------------
GetColumnMeta
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(3) "url" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) }
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(4) "hash" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) } 

GetColumnMeta
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(3) "url" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) }
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(4) "hash" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) } 

Actual result:
--------------
GetColumnMeta
bool(false)
bool(false)

GetColumnMeta
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(3) "url" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) }
array(6) { ["native_type"]=> string(6) "string" ["flags"]=> array(0) { } ["name"]=> string(4) "hash" ["len"]=> int(-1) ["precision"]=> int(0) ["pdo_type"]=> int(2) }