Question

我根据$ _GET []检索的术语数量，使用动态数量的OR条件进行查询。

    if(isset($_GET['terms']))
    {
        $concat_search = 'AND wp_posts.ID = wp_term_relationships.object_id';

        $query_concat_strings .= 'AND (';

        $no_commas = rtrim($_GET['terms'], ", \t\n");

        $terms = explode(',', $no_commas);

        $total_terms = count($terms);

        for($x = 0; $x < $total_terms; $x++)
        {
            $term_id = term_exists($terms[$x], 'especialidad');

            if ($term_id !== 0 && $term_id !== null)
            {           
                if($x == 0)
                {
                    $query_concat_strings .= ' wp_term_relationships.term_taxonomy_id ='.$term_id[term_id];
                }
                else
                {
                    $query_concat_strings .= ' OR wp_term_relationships.term_taxonomy_id ='.$term_id[term_id];
                }
            }
        }
        $query_concat_strings .= ')';
    }

    $querystr = "
        SELECT $wpdb->posts.* 
        FROM $wpdb->posts, $wpdb->postmeta, $wpdb->term_relationships
        WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id
        ".$concat_search."
        AND $wpdb->postmeta.meta_key = 'wpcf-fin-oferta'
        AND $wpdb->postmeta.meta_value > $currentdate
        AND $wpdb->posts.post_status = 'publish' 
        AND $wpdb->posts.post_type = 'oferta'".$query_concat_strings."
        ORDER BY $wpdb->posts.ID 
        LIMIT $start, $posts_per_page
        ";

//The query echoed: SELECT wp_posts.* FROM wp_posts, wp_postmeta, wp_term_relationships WHERE wp_posts.ID = wp_postmeta.post_id AND wp_posts.ID = wp_term_relationships.object_id AND wp_postmeta.meta_key = 'wpcf-fin-oferta' AND wp_postmeta.meta_value > 1456700400 AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'oferta' AND ( wp_term_relationships.term_taxonomy_id =50 OR wp_term_relationships.term_taxonomy_id =7)

这将返回与wp_term_relationships.term_taxonomy_id = 50或wp_term_relationships.term_taxonomy_id = 7相匹配的所有值，但我想命令结果优先考虑那些不仅符合一个条件而且符合更多条件的结果，首先是那些女孩匹配的条件多于其他

试过这个：

SELECT wp_posts.*, SUM(IF(wp_term_relationships.term_taxonomy_id ='11',1,NULL)) AS cond_matched, SUM(IF(wp_term_relationships.term_taxonomy_id ='50',1,NULL)) AS  cond_matched, SUM(IF(wp_term_relationships.term_taxonomy_id ='7',1,NULL)) AS cond_matched FROM wp_posts, wp_postmeta, wp_term_relationships WHERE wp_posts.ID = wp_postmeta.post_id AND wp_posts.ID = wp_term_relationships.object_id AND wp_postmeta.meta_key = 'wpcf-fin-oferta' AND wp_postmeta.meta_value > 1456786800 AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'oferta' GROUP BY wp_posts.ID ORDER BY cond_matched;

但结果显示完全随机排序。预期结果应该是：如果我搜索1,2,3

结果1：包含所有3个值的那个：1,2,3,4,5,6,7 结果2：至少有2：1,3,7,9的人结果3：仅有1：3,11,90,12

的那些

Answer 1

我唯一需要的是添加：

ORDER BY COUNT(*) DESC

在查询结束时。显然，在我看来，有一些关于Mysql工作方式的误解。

Mysql OR条件并按相关性排序

1 个答案: