选择与另一个表

我想从Company表选择与另一个表

最简单的方法是这样的

"Select id from Company " 

Company Table 
id company 
1 comA 
2 comB 
3 comC

不过我还有一个表Member Table这与Company Table连接拿起数据连接spcific行via company_id

Member Table 
id company_id companymember 
1 1   john 
2 1   Tam 
3 2   haya 
4 1   lee 
5 3   kih 
6 3   wild

现在我想挑选“有两个以上会员的公司”

（在这种情况下comA和comC有两个成员）

我怎样才能使通过SQL？

来源

2017-07-11 whitebear

'集团具有计数（companymember）COMPANY_ID> 2' –

您可以使用group by和having

select company, count(*) 
from Company a 
inner join member b on a._id = b.company_id 
group by company 
having count(*) > 2

来源

2017-07-11 16:25:51 scaisEdge

SELECT 
    Company.company, count(*) 
FROM 
    Company 
JOIN 
    Member on Company.id = Member.company_id 
GROUP BY 
    Company.company 
HAVING 
    count(*) > 2

来源

2017-07-11 16:27:48 Silencer310

选择与另一个表

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