连接 2 个表并根据多个列选择重复条目

Question

我加入了两个表，现在我想根据两个表中的条件显示所有重复条目（不是单个条目，而是两个条目）。

表 1:

Material_ID	Plant	Storage_old	Stock
1234	1	GH65	5
1234	1	ZG43	10
5436	1	GH65	65

表 2:

Plant	Storage_old	Storage_new
1	GH65	ZT65
1	ZG43	ZT65
1	GH65	OE86

我希望 select 的结果是这样的

Material_ID	Plant	Storage_old	Storage_new	Stock
1234	1	GH65	ZT65	5
1234	1	ZG43	ZT65	10

我尝试使用 select

    select
       t1.material_id,
       t1.plant_id   ,
       t1.storage_old,
       t2.storage_new,
       t1.stock
from
       t1
left join
       t2
on
       t1.plant        = t2.plant
and     t1.storage_old = t2.storage_old
group by
       t1.material_id,
       t1.plant_id   ,
       t2.storage_new
having
       count(*) > 1

没有成功。如何在不 selecting 所有列的情况下使用组？非常感谢！

Answer 1

考虑：

查询 1:

SELECT t1.plant, t2.storage_new, t1.material_id
FROM Table1 AS t1 LEFT JOIN Table2 AS t2 ON (t1.plant = t2.plant) AND (t1.storage_old = t2.storage_old)
GROUP BY t1.plant, t2.storage_new, t1.material_id
HAVING (((Count(*))>1));

查询 2:

SELECT Table1.Material_ID, Table1.Plant, Table1.Storage_old, Query1.storage_new, Table1.Stock
FROM Table1 INNER JOIN Query1 ON Table1.Material_ID = Query1.material_id;

可以在 all-in-one 语句的 Query2 中嵌套 Query1 的 SQL。

连接 2 个表并根据多个列选择重复条目

Joining 2 Tables and selecting duplicate entries based on several columns

ms-access