wordpress search result order by meta but duplicate two select sql query

Question

I want to customize wordpress search results so that all articles are sorted by a meta value named views field,below is my code:

<?php get_header(); ?>
<div class="content-wrap">
    <div class="content">
        <?php
        wp_reset_query();
        wp_reset_postdata();
        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
        $args = array(
            'showposts' => 100,
            'ignore_sticky_posts' => 1,
            'paged' => $paged,
            's' => $s,

            'post_status' => 'publish',
            'post_type' => 'post',
            'meta_key' => 'views',
            'orderby' => 'meta_value_num',
            'order' => 'DESC'
        );

        query_posts($args);
        ?>
        <?php if (!have_posts()) : ?>
            <header class="archive-header">
                <h1><?php echo sprintf(__('about【%s】', 'TBL'), htmlspecialchars($s)) ?></h1>
                <p class="muted"><?php _e('Here u go：', 'TBL') ?></p>
            </header>

        <?php else : ?>
            <header class="archive-header">
                <h1 class="s-title"><?php echo sprintf(__('<strong>[%s]</strong> · 相关内容', 'TBL'), htmlspecialchars($s)) ?>
                    <span style="float: right;">
                        <?php
                        global $wp_query;
                        if ($wp_query->found_posts < 2) {
                            $result = "result";
                        } else {
                            $result = "results";
                        }
                        echo $wp_query->found_posts . " " . "条";
                        ?>

                    </span>
                </h1>
            </header>

            <?php

            include('modules/excerpt.php');
            ?>
        <?php endif; ?>
    </div>
</div>
<?php get_sidebar();
get_footer(); ?>

But what is confusing is that this code produces two queries,one is

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
WHERE 1=1
AND (((wp_posts.post_title LIKE '%天使%')
OR (wp_posts.post_excerpt LIKE '%天使%')
OR (wp_posts.post_content LIKE '%天使%')))
AND ((wp_posts.post_type = 'post'
AND (wp_posts.post_status = 'publish'
OR wp_posts.post_status = 'private'))
OR (wp_posts.post_type = 'page'
AND (wp_posts.post_status = 'publish'
OR wp_posts.post_status = 'private'))
OR (wp_posts.post_type = 'attachment'
AND (wp_posts.post_status = 'publish'
OR wp_posts.post_status = 'private')))
ORDER BY wp_posts.post_title LIKE '%天使%' DESC, wp_posts.post_date DESC
LIMIT 0, 100

the other one is

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
INNER JOIN wp_postmeta
ON ( wp_posts.ID = wp_postmeta.post_id )
WHERE 1=1
AND (((wp_posts.post_title LIKE '%天使%')
OR (wp_posts.post_excerpt LIKE '%天使%')
OR (wp_posts.post_content LIKE '%天使%')))
AND ( wp_postmeta.meta_key = 'views' )
AND wp_posts.post_type = 'post'
AND ((wp_posts.post_status = 'publish'))
GROUP BY wp_posts.ID
ORDER BY wp_postmeta.meta_value+0 DESC
LIMIT 0, 100    
WP_Query->get_posts

How can I do to generate only the second sql query ? Because my wordpress has more than one million data, all two sql statements make the search wait time, it's too time consuming. Any help I would appreciate so so so much!