Question

我有一个MySQL Wordpress数据库，我正在处理postmeta表，它不是很好的结构。它有四列：＆＃34; meta_id，post_id，meta_key，meta_value＆＃34;。这是我正在使用的查询：

SELECT  DISTINCT * 
        FROM wp_10_postmeta as pm
        JOIN wp_10_posts AS p ON pm.post_id = p.ID
        WHERE (meta_key LIKE 'personnel_%_last_name' OR
                meta_key LIKE 'personnel_%_first_name' OR
                meta_key LIKE 'personnel_%_title' OR
                meta_key LIKE 'personnel_%_alias' OR
                meta_key LIKE 'webpages_%_title' OR
                meta_key LIKE 'webpages_%_alias' OR
                meta_key LIKE 'departments_%_name' OR
                meta_key LIKE 'departments_%_alias')
            AND post_status = 'publish' AND meta_value LIKE '%john%' AND meta_value LIKE '%smith%'

问题：如果我搜索＆＃34; john＆＃34;此查询效果很好或者＆＃34;史密斯＆＃34;但是，如果我这样做，约翰史密斯＆＃34;它返回空。有没有办法结合＆＃34;人员_％_ last_name＆＃34;和＆＃34;人员_％_ first_name＆＃34;然后比较？

Answer 1

我猜你想要查看匹配的多个字段。尝试使用group by来实现此目的：

    SELECT p.*
    FROM wp_10_postmeta as pm JOIN
         wp_10_posts AS p
         ON pm.post_id = p.ID
    WHERE (meta_key LIKE 'personnel_%_last_name' OR
            meta_key LIKE 'personnel_%_first_name' OR
            meta_key LIKE 'personnel_%_title' OR
            meta_key LIKE 'personnel_%_alias' OR
            meta_key LIKE 'webpages_%_title' OR
            meta_key LIKE 'webpages_%_alias' OR
            meta_key LIKE 'departments_%_name' OR
            meta_key LIKE 'departments_%_alias')
        AND p.post_status = 'publish'
    GROUP BY p.id
    HAVING SUM(meta_value LIKE '%john%') > 0 AND SUM(meta_value LIKE '%smith%') > 0;

SQL将记录与相同的通配符值组合在一起

1 个答案: