[英]Custom Select Query by meta key and cat id
我有这个自定义查询,以获取该帖子和订单发布的截止日期。 如何将其修改为仅列出特定类别ID( 例如“ 20”)的列表
$querystr = "
SELECT wposts.*
FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
WHERE wposts.ID = wpostmeta.post_id
AND wpostmeta.meta_key = 'es_ape_expiry'
ORDER BY wpostmeta.meta_value ASC
";
$pageposts = $wpdb->get_results($querystr, OBJECT);
非常感谢 !
尝试执行以下查询,并将$ cat_id替换为20
SELECT wposts.*
FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
JOIN $wpdb->term_relationships tr ON (p.ID = tr.object_id)
JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id)
JOIN $wpdb->terms t ON (tt.term_id = t.term_id)
WHERE wposts.ID = wpostmeta.post_id
AND wpostmeta.meta_key = 'es_ape_expiry'
AND tt.taxonomy = 'category'
AND t.term_id = $cat_id
ORDER BY wpostmeta.meta_value ASC
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