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Can we use sql functions like MAX() MIN() for magento collection rather than the query mentioned in this post ?

How To Get Min & Max Attribute Values From Database to Link to Price Slider

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you can use it like below.

$collection = Mage::getModel('modulename/modulename')->getCollection(); 

$collection->getSelect()
    ->reset(Zend_Db_Select::COLUMNS)
    ->columns('MAX(your_index) as max_aliases');

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