WordPress上的MySQL UNION

Question

我需要帮助来开发wordpress定制。 我有以下带有UNION指令的mysql查询：

SELECT 
    wp_posts.* 
FROM wp_posts 
    INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) 
    LEFT JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id ) 
    LEFT JOIN wp_postmeta AS mt1 ON (wp_posts.ID = mt1.post_id AND mt1.meta_key = 'dir_featured' ) 
WHERE 
    ( wp_term_relationships.term_taxonomy_id IN (2151) ) AND 
    wp_posts.post_type = 'ait-dir-item' AND 
    ((wp_posts.post_status = 'publish')) AND 
    ( 
        ( 
        wp_postmeta.meta_key = 'dir_featured' AND 
        CAST(wp_postmeta.meta_value AS CHAR) = 'yes' 
        )
    ) 
GROUP BY wp_posts.ID 
UNION
SELECT 
    wp_posts.* 
FROM wp_posts 
    INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) 
    LEFT JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id ) 
    LEFT JOIN wp_postmeta AS mt1 ON (wp_posts.ID = mt1.post_id AND mt1.meta_key = 'dir_featured' ) 
WHERE 
    wp_term_relationships.term_taxonomy_id IN (2151) AND 
    wp_posts.post_type = 'ait-dir-item' AND 
    wp_posts.post_status = 'publish' AND 
    mt1.post_id IS NULL 
GROUP BY wp_posts.ID 

我想用wordpress参数翻译此查询。 可能吗？

Answer 1

该查询的目的是什么？ 这是您在Wordpress模式下的查询

$args = array(
    'cat'            => 2151,
    'post_type'      => 'ait-dir-item',
    'post_status'    => 'publish',
    'meta_query'     => array(
                array(
                    'key'     => 'dir_featured',
                    'value'   => 'yes',
                    'compare' => '==',
                ),
            ),

);
query_posts( $args );