我有2个WP\\u查询，我想将它们合并为1个查询。以下是我最初的两个查询：

$childlist = new WP_Query( array (
    \'numberposts\'   => -1,
    \'post_type\'     => \'page\',
    \'post_parent\'   => $post->ID,
    \'fields\'        => \'ids\'
));
$childlist2 = new WP_Query( array (
    \'numberposts\'   => -1,
    \'post_type\'     => \'page\',
    \'meta_key\'      => \'extra_menu\',
    \'meta_value\'    => $post->ID,
    \'meta_compare\'  => \'LIKE\',
    \'fields\'        => \'ids\'
));

我试着用几种不同的方法将它们结合起来，但似乎找不到有效的解决方案。一旦我尝试这个或关系，它只会给出；或"；。

$childlist = new WP_Query(array(
    \'numberposts\'   => -1,
    \'post_type\'     => \'page\',
    \'meta_query\'    =>  array(
        \'relation\'      => \'OR\',
            array(
                \'key\' => \'post_parent\',
                \'value\' => $post->ID,
                \'compare\' => \'=\',
            ),
            array(
                \'key\'       => \'extra_menu\',
                \'value\'     => $post->ID,
                \'compare\'   => \'LIKE\',
            ),
        ),
));

我该怎么解决这个问题呢？