求助用SQL實現Vlookup功能

select t1.規格型號,t1.[數量1],t2.[數量2]
from
(
SELECT 表1.規格型號, Sum([數量]) AS [數量1]
FROM 表1
WHERE (((表1.銷售部)="甲"))
GROUP BY 表1.規格型號
) as t1,
(
SELECT 表1.規格型號, Sum([數量]) AS [數量2]
FROM 表1
WHERE (((表1.銷售部)="乙"))
GROUP BY 表1.規格型號
) as t2
where t1.規格型號=t2.規格型號