在包含组\u CONCAT的查询中忽略限制

我需要从第二个表中选择一些行,并用逗号分隔的字符串连接它们。除了一个问题外,查询工作得很好—它总是选择所有行并忽略限制。

这是我的查询的一部分,它获取该字符串并忽略限制:

select 
    group_concat(value order by `order` asc SEPARATOR ', ') 
from slud_data 
    left join slud_types on slud_types.type_id=slud_data.type_id 
where slud_data.product_id=18 and value!='' and display=0 limit 3;


// Result:
+---------------------------------------------------------+
| group_concat(value order by `order` asc SEPARATOR ', ') |
+---------------------------------------------------------+
| GA-XXXX, Bentley, CONTINENTAL FLYING SPUR, 2006         |
+---------------------------------------------------------+

// Expected result: (only 3 comma-separated records, not 4)

SELECT *,product_id id,
    (select group_concat(value order by `order` asc SEPARATOR ', ') from slud_data left join slud_types on slud_types.type_id=slud_data.type_id where slud_data.product_id=t1.product_id and value!='' and display=0 limit 3) text
FROM slud_products t1 
WHERE 
    now() < DATE_ADD(date,INTERVAL +ttl DAY) and activated=1
ORDER BY t1.date desc