php - 需要帮助优化 wordpress meta_query

Question

我会帮助优化这个 wordpress 查询，它目前需要 100% 的 cpu 使用率并且从来没有机会完成它:

SELECT wp_posts.* FROM wp_posts INNER JOIN wp_postmeta ON (wp_posts.ID = wp_postmeta.post_id)
INNER JOIN wp_postmeta AS mt1 ON (wp_posts.ID = mt1.post_id)
INNER JOIN wp_postmeta AS mt2 ON (wp_posts.ID = mt2.post_id)
INNER JOIN wp_postmeta AS mt3 ON (wp_posts.ID = mt3.post_id)
INNER JOIN wp_postmeta AS mt4 ON (wp_posts.ID = mt4.post_id)
INNER JOIN wp_postmeta AS mt5 ON (wp_posts.ID = mt5.post_id)
INNER JOIN wp_postmeta AS mt6 ON (wp_posts.ID = mt6.post_id)
INNER JOIN wp_postmeta AS mt7 ON (wp_posts.ID = mt7.post_id)
INNER JOIN wp_postmeta AS mt8 ON (wp_posts.ID = mt8.post_id)
INNER JOIN wp_postmeta AS mt9 ON (wp_posts.ID = mt9.post_id)
INNER JOIN wp_postmeta AS mt10 ON (wp_posts.ID = mt10.post_id) WHERE 1=1 AND wp_posts.post_type = 'produkter' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private') AND (wp_postmeta.meta_key = 'csv_product_month_sub'
OR (mt1.meta_key = 'csv_product_type' AND CAST(mt1.meta_value AS CHAR) = 'Mobilt Bredbaand')
OR (mt2.meta_key = 'csv_product_consumption' AND CAST(mt2.meta_value AS SIGNED) BETWEEN '0' AND '2')
OR (mt3.meta_key = 'csv_product_consumption' AND CAST(mt3.meta_value AS SIGNED) BETWEEN '3' AND '9')
OR (mt4.meta_key = 'csv_product_consumption' AND CAST(mt4.meta_value AS SIGNED) BETWEEN '10' AND '19')
OR (mt5.meta_key = 'csv_product_download' AND CAST(mt5.meta_value AS SIGNED) BETWEEN '2' AND '9')
OR (mt6.meta_key = 'csv_product_download' AND CAST(mt6.meta_value AS SIGNED) BETWEEN '10' AND '19')
OR (mt7.meta_key = 'csv_product_download' AND CAST(mt7.meta_value AS SIGNED) BETWEEN '20' AND '29')
OR (mt8.meta_key = 'csv_product_month_sub' AND CAST(mt8.meta_value AS SIGNED) BETWEEN '0' AND '49')
OR (mt9.meta_key = 'csv_product_month_sub' AND CAST(mt9.meta_value AS SIGNED) BETWEEN '50' AND '99')
OR (mt10.meta_key = 'csv_product_month_sub' AND CAST(mt10.meta_value AS SIGNED) BETWEEN '100' AND '149') ) GROUP BY wp_posts.ID ORDER BY wp_postmeta.meta_value+0 ASC 

Answer 1

到目前为止我有:

SELECT wp_posts.* FROM wp_posts INNER JOIN wp_postmeta ON (wp_posts.ID = wp_postmeta.post_id)
WHERE ID IN (
            SELECT post_id from wp_postmeta 
            WHERE 
            (
                (meta_key = 'csv_product_consumption' AND CAST(meta_value AS SIGNED) BETWEEN 0 AND 2) 
                OR (meta_key = 'csv_product_consumption' AND CAST(meta_value AS SIGNED) BETWEEN 3 AND 9) 
                OR (meta_key = 'csv_product_consumption' AND CAST(meta_value AS SIGNED) BETWEEN 10 AND 19) 
                OR (meta_key = 'csv_product_download' AND CAST(meta_value AS SIGNED) BETWEEN 2 AND 9) 
                OR (meta_key = 'csv_product_download' AND CAST(meta_value AS SIGNED) BETWEEN 10 AND 19) 
                OR (meta_key = 'csv_product_download' AND CAST(meta_value AS SIGNED) BETWEEN 20 AND 29) 
                OR (meta_key = 'csv_product_month_sub' AND CAST(meta_value AS SIGNED) BETWEEN 0 AND 49) 
                OR (meta_key = 'csv_product_month_sub' AND CAST(meta_value AS SIGNED) BETWEEN 50 AND 99) 
                OR (meta_key = 'csv_product_month_sub' AND CAST(meta_value AS SIGNED) BETWEEN 100 AND 149) 
            )
            GROUP BY post_id
        )
AND wp_posts.post_type = 'produkter' 
AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private') 
AND ( (wp_postmeta.meta_key = 'csv_product_type') AND (wp_postmeta.meta_value = 'Mobilt Bredbaand'))
ORDER BY wp_postmeta.meta_value+0 ASC

它不再使用过多的 CPU，查询需要 0.0331 秒。

任何其他想法将不胜感激。