Multiple meta_key with OR condition?

Hello everyone,
I need to do a custom query that gives me the posts that have the value “$value” in the custom field “custom1” or “custom2”.
Is there something similar?

$querydetails = "
   SELECT wposts.*
   FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
   WHERE wposts.ID = wpostmeta.post_id

   WHERE (wpostmeta.meta_key = 'custom1'
		AND wpostmeta.meta_value = '$value')

	OR (wpostmeta.meta_key = 'custom2'
		AND wpostmeta.meta_value = '$value')

   AND wposts.post_status = 'publish'
   AND wposts.post_type = 'post'
   ORDER BY wposts.post_date DESC
 ";

the best is:
if is in both “custom1” and “custom2” ignore one of this

thanks for your attention