Magento Update product set first image as default image , small_image, thumbnail

gistfile1.txt

UPDATE catalog_product_entity_media_gallery AS mg,
    catalog_product_entity_media_gallery_value AS mgv,
    catalog_product_entity_varchar AS ev
SET ev.value = mg.value
WHERE  mg.value_id = mgv.value_id
    AND mg.entity_id = ev.entity_id
    AND ev.attribute_id IN (70, 71, 72)    <-------------  Change attribute id (Image, small_image, thumbnail)
    AND mgv.position = 1;