mySQL SELECT *和组concat

mysql

2016-01-21 53 views -1 likes

-1

我有以下的SQL查询，效果很好。有没有一种方法可以像SELECT * FROM PRODUCTS这个查询呢？我在语法上挣扎。mySQL SELECT *和组concat

SELECT GROUP_CONCAT(tc.`name` ORDER BY tc.entity_id) AS cat_ids 
FROM products AS tp 
JOIN categories AS tc 
ON FIND_IN_SET(tc.entity_id, tp.category_ids) 
GROUP BY tp.category_ids;

来源

2016-01-21 Liam Fell

回答

您已向products表提供别名“tp”。您可以通过使用tp.*

SELECT tp.* 
FROM products AS tp 
JOIN categories AS tc 
ON FIND_IN_SET(tc.entity_id, tp.category_ids) 
GROUP BY tp.category_ids;

来源

2016-01-21 22:53:31 faraday703

“GROUP_CONCAT”在哪里？ – Barmar

@Barmar如果Liam要求'products。*'，那么他不会要求做'GROUP CONCAT'他特别试图从一个表中获取所有信息，而不是另一个。 – faraday703

他说他想从“产品”表中获取所有信息，**除了他已经获得的类别信息外。 – Barmar

这就是你正在尝试做访问使用tp.columnName所有列从products表列，还是？

SELECT tp.*, GROUP_CONCAT(tc.`name` ORDER BY tc.entity_id) AS cat_ids 
FROM products AS tp 
JOIN categories AS tc 
ON FIND_IN_SET(tc.entity_id, tp.category_ids) 
GROUP BY tp.category_ids;

来源

2016-01-21 23:11:59 slaakso

mySQL SELECT *和组concat

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