不适合this question的解决方案,但现在任何动态(重要和必要)枢轴或其他方式的解决方案,这个返回表?
执行底部查询是select和return table
查询:
SELECT p.product_id,pf.filter_id
FROM oc_product p
LEFT JOIN oc_product_filter pf
on p.product_id=pf.product_id
where p.product_id in(96621,97026) and pf.filter_id in (1901,1855 )
group by p.product_id,pf.filter_id
处理结果:
product_id filter_id
96621 1855
96621 1901
97026 1901
97026 1610
我想结果这个:
product_id filter_id
96621 1855
96621 1901
但结果如下:
product_id filter_id
96621 1855,1901
97026 1901,1610
使用GROUP_CONCAT来旋转表格:
SELECT p.product_id,GROUP_CONCAT(pf.filter_id)
FROM oc_product p
LEFT JOIN oc_product_filter pf
on p.product_id=pf.product_id
where p.product_id in(96621,97026) and pf.filter_id in (1901,1855 )
group by p.product_id
这将返回:
product_id filter_id
96621 1855,1901
97026 1901,1610