如何從兩個不同的表中選擇列（A，B）其中總和（列表A）小於columntableB

Question

我可以選擇價格總和（稅）小於價格，我正在執行查詢但我收到錯誤

select b.price 
from tableA a 
inner join tableB b on b.idprice = a.idprice where sum(tax)<price 
group by a.idprice,b.price 

Answer 1

我覺得你ORI ginal方法將使用having子句而不是where來工作：

select b.price 
from tableA a inner join 
    tableB b 
    on b.idprice = a.idprice 
group by a.idprice, b.price 
having sum(tax) < b.price; 

Answer 2

所以是這樣的：

SELECT t.*,s.* 
FROM TableA t 
INNER JOIN(SELECT idprice,sum(tax) as sum_tax 
      FROM TableB 
      GROUP BY idprice) s 
ON(t.idprice = s.idprice and t.price < s.sum_tax) 

或者，如果價格表也應該被概括：

SELECT t.idprice,sum(t.price),max(s.sum_tax) 
FROM TableA t 
INNER JOIN(SELECT idprice,sum(tax) as sum_tax 
      FROM TableB 
      GROUP BY idprice) s 
ON(t.idprice = s.idprice) 
GROUP BY t.idprice 
having sum(t.price) < max(s.sum_tax)