Code-Snippets-Functions/Execute a function on a child site/WooCommerce/display-variations-sku-product-admin.txt

add_filter( 'woocommerce_product_get_sku', 'wc_variable_product_skus_admin', 9999, 2 );
 
function wc_variable_product_skus_admin( $sku, $product ) {
   if ( ! is_admin() ) return $sku;
   global $post_type, $pagenow;
   if ( 'edit.php' === $pagenow && 'product' === $post_type ) {
      if ( $product->is_type('variable') ) {
         $sku = '';
         foreach ( $product->get_children() as $child_id ) {
            $variation = wc_get_product( $child_id ); 
            if ( $variation && $variation->exists() ) $sku .= '(' . $variation->get_sku() . ') ';
         }
      }
   }
   return $sku;
}