How to execute large sql query in magento? - mysql

Question

I want to store huge content in db and my sample text is 16129 characters in length when i tried to execute this query it is showing "error:The requested URL could not be retrieved" in firefox and "no-data received" in chrome.
Moreover I use LONGTEXT as datatype for text in DB.
I also tried to execute the query directly in phpmyadmin it is working correctly.
The code is shown below.
public function _getConnection($type = 'core_write') {
return Mage::getSingleton('core/resource')->getConnection($type);
}
public function testdbAction(){
$db = $this->_getConnection();
$current_time=now();
$text="The European languages are members of the same family...... ...Europe uses the same vocabulary. The ";//text is 16129 characters in length
$sql = "INSERT into test(`usercontent_id`,`app_id`,`module_id`,`customer_id`,`content`,`created_time`,`updated_time`,`item_id`,`index_id`,`position_id`) VALUES (NULL, 15, 9,2,'" .$text. "','" . $current_time . "','" . $current_time . "',1003,5,4)";
$db->query($sql);
}
How do i handle this? any suggestions or help..

Answer 1

Try using $db->exec($sql) instead of $db->query($sql)

Answer 2

For manipulating with database structure and data Magento has a dedicated place. It is called install / upgrade scripts. It was made to keep track of modules version for easy updates. So you should use a script to add new data.
Here's an example.
config.xml of your module:
<modules>
<My_Module>
<version>0.0.1</version>
</My_Module>
</modules>
<global>
<resources>
<my_module_setup>
<setup>
<module>My_Module</module>
<class>Mage_Core_Model_Resource_Setup</class>
</setup>
</my_module_setup>
</resources>
</global>
Now, you need to create following file:
My_Module/sql/my_module_setup/install-0.0.1.php
Now, depending on your Magento version, file would need to have a different name. If you're using Magento CE 1.4 or lower (EE 1.8) then you should name it mysql4-install-0.0.1.php.
This script will be launched at next website request. Class Mage_Core_Model_Resource_Setup will execute code inside install-0.0.1.php. From within the install script you will have access to the Setup class by using $this object;
So now, you can write in script following code:
$this->startSetup();
$text = <<<TEXT
YOUR LONG TEXT GOES HERE
TEXT;
$this->getConnection()
->insert(
$this->getTable('test'),
array(
'usercontent_id' => null,
'app_id' => 15,
'content' => $text,
//other fields in the same fashion
)
);
$this->endSetup();
And that's it. It's a clean and appropriate way of adding custom data to the database in Magento.
If you want to save a user input on a regular basis using forms, then I recommend creating w model, resource model and collection, define entities in config.xml. For more information please refer to Alan Storm's articles, like this one.
I hope that I understood your question correctly.