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Whem i am trying to fetch sql query in my magento's controller it's display this error

SQLSTATE[HY000]: General error

HERE is my code

    $connection = Mage::getSingleton('core/resource')->getConnection('core_write');
    $sql = "DELETE FROM marketplace_sellernotification WHERE seller_id =".$sellerId;
    $rows = $connection->fetchAll($sql);
    header('Location: ' . $_SERVER['HTTP_REFERER']);
  • try this code:-my.cnf settings that might help… max_allowed_packet = 16M wait_timeout = 1800 connect_timeout = 120 Commented Jul 2, 2015 at 11:10
  • please tell me code of line 1362 at SellerController.php
    – Amit Bera
    Commented Jul 2, 2015 at 11:10
  • $rows = $connection->fetchAll($sql);
    – Magento
    Commented Jul 2, 2015 at 11:12
  • I hope you are sanitizing $sellerId to always be an integer. Better: use prepared statements. Even better: use the appropiate Magento resource model. Commented Jul 2, 2015 at 11:25

1 Answer 1


Hi first you need change core_read to core_write

$connection = Mage::getSingleton('core/resource')->getConnection('core_read'); 


$connection = Mage::getSingleton('core/resource')->getConnection('core_write'); 

Now run query by checking carefully ,sure it will work


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