Question

我正在尝试查找状态为“失败”的所有订单

每个查询都单独工作，但当我使用一个作为子查询时，它会失败。

 SELECT wp_posts.*
        FROM wp_postmeta
        INNER JOIN wp_posts
        ON wp_postmeta.post_id = wp_posts.ID
        AND wp_posts.post_type='shop_order'
        AND wp_posts.post_status='publish'
        AND wp_posts.post_date>='{$this->carbon->now()->subDays($days)->toDateTimeString()}'
        AND wp_postmeta.meta_key='_customer_user'
        AND wp_postmeta.meta_value='{$this->user->ID}'
        IN (SELECT DISTINCT wp_postmeta.post_id, tt.taxonomy, te.slug 
        FROM wp_postmeta, wp_terms te, wp_term_relationships tr, wp_term_taxonomy tt
          WHERE wp_postmeta.post_id = tr.object_id
          AND tr.term_taxonomy_id = tt.term_taxonomy_id
          AND te.term_id = tt.term_id
          AND tt.taxonomy = 'shop_order_status'
          AND te.slug = 'failed'
        )

我对sql很新，所以我认为子查询是错误的。子查询甚至有意义吗？我正在寻找具有这些条件的帖子，然后进行另一个查询以找到te.slug值为'failed'的帖子

感谢您提供任何指导。

Answer 1

在子查询中，确保只选择一列。这将解决您的问题。此外，您似乎错过了AND some_column IN ...。你只有IN

Answer 2

已转换，将样式连接到内部联接样式表示法
在

AND wp_Postmeta.Post_ID

仍在评估是否有更好的方法来避免使用..

SELECT wp_posts.*
FROM wp_postmeta
INNER JOIN wp_posts
  ON wp_postmeta.post_id = wp_posts.ID
  AND wp_posts.post_type='shop_order'
  AND wp_posts.post_status='publish'
  AND wp_posts.post_date>='{$this->carbon->now()->subDays($days)->toDateTimeString()}'
  AND wp_postmeta.meta_key='_customer_user'
  AND wp_postmeta.meta_value='{$this->user->ID}'
  AND wp_Postmeta.Post_ID IN (
    SELECT DISTINCT wp_postmeta.post_id, tt.taxonomy, te.slug 
    FROM wp_postmeta
    INNER JOIN wp_term_relationships tr
      ON wp_postmeta.post_id = tr.object_id 
    INNER JOIN wp_term_taxonomy tt
      ON tr.term_taxonomy_id = tt.term_taxonomy_id
    INNER JOIN wp_terms te
      ON te.term_id = tt.term_id
    WHERE tt.taxonomy = 'shop_order_status'
      AND te.slug = 'failed')

Answer 3

这可能是你正在尝试的;

SELECT ps.*
        FROM wp_postmeta pm, wp_posts ps
        WHERE wp_pm.post_id = ps.ID
        AND ps.post_type='shop_order'
        AND ps.post_status='publish'
        AND ps.post_date>='{$this->carbon->now()->subDays($days)->toDateTimeString()}'
        AND pm.meta_key='_customer_user'
        AND pm.meta_value='{$this->user->ID}'
        AND EXISTS (SELECT 1
        FROM wp_terms te, wp_term_relationships tr, wp_term_taxonomy tt
          WHERE pm.post_id = tr.object_id
          AND tr.term_taxonomy_id = tt.term_taxonomy_id
          AND te.term_id = tt.term_id
          AND tt.taxonomy = 'shop_order_status'
          AND te.slug = 'failed'
        )

mysql subselect query - 查找所有具有'failed'状态的订单WOOCOMMERCE

3 个答案: