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edited May 23, 2017 at 12:37

I found this one http://stackoverflow.com/a/8672847 https://stackoverflow.com/a/8672847. It looks like Magento 1 code but it's work for me.

$product->setData('unwanted_attribute',null);        
$resource = $product->getResource();
$resource->saveAttribute($product,'unwanted_attribute');

I found this one http://stackoverflow.com/a/8672847. It looks like Magento 1 code but it's work for me.

$product->setData('unwanted_attribute',null);        
$resource = $product->getResource();
$resource->saveAttribute($product,'unwanted_attribute');

I found this one https://stackoverflow.com/a/8672847. It looks like Magento 1 code but it's work for me.

$product->setData('unwanted_attribute',null);        
$resource = $product->getResource();
$resource->saveAttribute($product,'unwanted_attribute');

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created Jan 4, 2017 at 7:57

I found this one http://stackoverflow.com/a/8672847. It looks like Magento 1 code but it's work for me.

$product->setData('unwanted_attribute',null);        
$resource = $product->getResource();
$resource->saveAttribute($product,'unwanted_attribute');