paulfcdd

# Q1
THe error is occur because of fetchAll load all result into the memory, so in case of big tables it can finish with error memory. 
To prevent it we need to read results line by line using fetch, do not use SELECT * and select columns we need instead. Example of the
code which fix this issue
```
<?php
$sql = 'SELECT id, col1, col2 
        FROM largeTable 
        ORDER BY id';
$stmt = $pdo->query($sql, PDO::FETCH_ASSOC);