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“字段列表”中的未知列“ID”,但该列在列表中

mariadb syntax sql

ptrcao · 技术社区 · 6 年前

错误:

“字段列表”中的未知列“ID”

ID 是柱下的柱子 wp_posts 表:

create table wp_posts (
  ID integer primary key auto_increment,
  post_title varchar(30),
  post_type varchar(30)
);


create table wp_postmeta (
  ID integer primary key auto_increment,
  post_id integer,
  meta_key varchar(30) not null default '_regular_price',
  meta_value integer not null
);

产生错误的查询:

DELETE FROM wp_posts 
WHERE  id IN (SELECT id 
              FROM   (SELECT id, 
                             post_title, 
                             post_type, 
                             meta_value 
                      FROM   (SELECT wp_postmeta.post_id, 
                                     post_title, 
                                     post_type, 
                                     meta_value, 
                                     Row_number() 
                                       OVER( 
                                         partition BY post_title 
                                         ORDER BY wp_postmeta.meta_value) rn 
                              FROM   wp_postmeta 
                                     JOIN wp_posts 
                                       ON wp_postmeta.post_id = wp_posts.id 
                              WHERE  wp_posts.post_type = 'Product' 
                                     AND wp_postmeta.meta_key = '_regular_price' 
                             ) t 
                      WHERE  t.rn <> 1) AS aliasx); 

) t where t.rn <> 1
) AS aliasx
);

dbfiddle here

3 回复 | 直到 6 年前

Gordon Linoff 6 年前

                 (SELECT id, 
                         post_title, 
                         post_type, 
                         meta_value 
                  FROM   (SELECT wp_postmeta.post_id, 
                                 post_title, 
                                 post_type, 
                                 meta_value, 
                                 Row_number() 
                                   OVER( 
                                     partition BY post_title 
                                     ORDER BY wp_postmeta.meta_value) rn

没有 id 在子查询中。想必你是有意的 post_id 身份证件 .

PSK 6 年前

您可以使用 EXISTS

DELETE wp 
FROM   wp_posts wp 
WHERE  EXISTS (SELECT 1 
               FROM   wp_postmeta md 
               WHERE  md.post_id = wp.id 
                      AND wp.post_type = 'Product' 
                      AND md.meta_key = '_regular_price')

ptrcao 6 年前

wp_posts.ID 从子查询。解决方法是添加 wp_posts.ID, 要在低阶子查询中选择列表,以便在高阶子查询中选择它,请执行以下操作:

(SELECT wp_posts.ID, wp_postmeta.post_id,post_title,post_type ,meta_value,