我有这个我需要做的自定义查询,它将检查post_metadata值和分类术语。我使用的是从Wordpress的codex修改过的代码,但它一致地返回零结果。我做错了吗? (更新:显示首先将其加载到变量中的位置)
global $wpdb;
$querystr = "
SELECT * FROM $wpdb->posts
LEFT JOIN $wpdb->postmeta ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
LEFT JOIN $wpdb->term_relationships ON($wpdb->posts.ID = $wpdb->term_relationships.object_id)
LEFT JOIN $wpdb->term_taxonomy ON($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
LEFT JOIN $wpdb->terms ON($wpdb->term_taxonomy.term_id = $wpdb->terms.term_id)
WHERE $wpdb->terms.name = '" . $service . "'
AND $wpdb->term_taxonomy.taxonomy = 'Services'
AND $wpdb->postmeta.meta_value = '" . $county . "'
AND $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = 'post'
AND $wpdb->postmeta.meta_key = 'order'
ORDER BY $wpdb->postmeta.meta_value ASC";
$pageposts = $wpdb->get_results($querystr, OBJECT);
答案 0 :(得分:0)
我建议记录执行的实际字符串(将此select保存到变量并记录变量,然后将变量传递给wpdb查询)。获得sql后,您可以更轻松地对其进行故障排除(或在此处发布以获得进一步的帮助)。