Question

我正在尝试搜索wp_post＆amp; wp_postmeta同时使用此查询：

$querystr = "
    SELECT $wpdb->posts.* 
    FROM $wpdb->posts, $wpdb->postmeta
    WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id 
    AND $wpdb->postmeta.meta_key = 'City' 
    AND $wpdb->postmeta.meta_value = 'Vancouver'
    AND $wpdb->posts.post_status = 'publish' 
    AND $wpdb->posts.post_type = 'talents'
    ORDER BY $wpdb->posts.post_date DESC
 ";

$pageposts = $wpdb->get_results($querystr, OBJECT);

正如您所看到的，我搜索将City = Vancouver作为其meta字段的帖子。但是，我如何添加一个条件，以便我不会一起到温哥华，不列颠哥伦比亚省和华盛顿州温哥华？

像往常一样：

    AND ($wpdb->postmeta.meta_key = 'Country' 
    AND $wpdb->postmeta.meta_value = 'Canada')
    AND ($wpdb->postmeta.meta_key = 'City' 
    AND $wpdb->postmeta.meta_value = 'Vancouver')

Answer 1

根据上面提到的链接，我能够创建此模式，以根据3个meta_values和1个自定义分类法搜索自定义posts_types。

所以我的结构是：

每个自定义帖子（人才）都有3个自定义字段（城市，国家，性别）。
每个自定义帖子属于自定义分类“语言”，包含某些类别，如英语，西班牙语，俄语等。

所以下面的查询正在寻找一位在加拿大，多伦多可以说法语的女性。

$querystr= "SELECT * FROM wp_posts
LEFT JOIN wp_postmeta v1 ON (wp_posts.ID = v1.post_id)
LEFT JOIN wp_postmeta v2 ON (wp_posts.ID = v2.post_id)
LEFT JOIN wp_postmeta v3 ON (wp_posts.ID = v3.post_id)
LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
LEFT JOIN wp_term_taxonomy ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id)
LEFT JOIN wp_terms ON (wp_term_taxonomy.term_id = wp_terms.term_id) 
WHERE
wp_terms.name = 'French' AND wp_term_taxonomy.taxonomy = 'Languages' AND wp_posts.post_status = 'publish' AND wp_posts.post_type = 'talents' 
AND v1.meta_value = 'Toronto'
AND v2.meta_value = 'Canada'
AND v3.meta_value = 'female' 
ORDER BY wp_posts.post_date DESC";

Answer 2

正是我所寻找的：http://kuttler.eu/code/custom-wordpress-sql-query-for-multiple-meta-values/

Answer 3

我认为以下代码可能会对您有所帮助。如果您有任何疑问，请告诉我。

$args = array(
'post_type' => 'talents',
'posts_per_page' => 10,
'meta_query' => array(
   array(
       'key' => 'City',
       'value' => 'Vancouver',
       'compare' =>  '=',
       'type' => 'CHAR'
        )

),
    'paged' => $paged

);
$temp = $wp_query;
$wp_query = null;


                $wp_query = new WP_Query( $args );
        <?php while (have_posts()) : the_post(); 
            global $post;
/* Your Post content Here                */

endwhile;

wp_reset_query();
/* Pagination Code */
<?php
    global $wp_query;

  $big = 999999999; // need an unlikely integer

echo paginate_links( array(
    'base' => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
    'format' => '?paged=%#%',
    'current' => max( 1, get_query_var('paged') ),
    'total' => $wp_query->max_num_pages,
    'prev_text'    => __('Previous'),
    'next_text'    => __('Next'),
    'add_fragment' => __($search_page_link)
) );
?>

您还可以在元值上添加多个条件。网址： - https://codex.wordpress.org/Class_Reference/WP_Query

Wordpress JOIN wp_post和wp_postmeta

3 个答案: