更新值在MySQL

Question

同桌的另一行，我需要用下面的SQL幫助： -

UPDATE `mg_catalog_category_entity_varchar` AS t1 INNER JOIN `mg_catalog_category_entity` 
AS t2 ON t1.`entity_id`= t2.`entity_id` 
SET t1.`value` = CONCAT('US Sports Goods ', t1.`value`, ' | My Site Name') 
WHERE t2.`path` LIKE '1/2642%' AND t2.`level` > 1 AND t1.`attribute_id` = 40 

我的問題是，在CONCAT()聲明t1.value領域需要拉t1.value WHERE t1.attribute_id = 35和我正在努力弄清楚如何在CONCAT()聲明中正確指定。

Answer 1

試試這個：

UPDATE `mg_catalog_category_entity_varchar` AS t1 INNER JOIN `mg_catalog_category_entity` 
AS t2 ON t1.`entity_id`= t2.`entity_id` 
SET t1.`value` = CONCAT('US Sports Goods ', (SELECT t3.`value` FROM `mg_catalog_category_entity_varchar` AS t3 WHERE t3.`attribute_id` = 35 LIMIT 1), ' | My Site Name') 
WHERE t2.`path` LIKE '1/2642%' AND t2.`level` > 1 AND t1.`attribute_id` = 40 

Answer 2

試試這個：

UPDATE `mg_catalog_category_entity_varchar` AS t1 
INNER JOIN `mg_catalog_category_entity` AS t2 ON t1.`entity_id`= t2.`entity_id` 
INNER JOIN 
(
    SELECT * 
    FROM mg_catalog_category_entity_varchar 
    WHERE `attribute_id` = 35 
) AS t12 ON t2.entity_id = t12.entity_id 
SET t1.`value` = CONCAT('US Sports Goods ', t12.`value`, ' | My Site Name') 
WHERE t2.`path` LIKE '1/2642%' 
    AND t2.`level` > 1 
    AND t1.`attribute_id` = 40