我需要做的是显示两个表之间的所有差异; TABLE1中存在但不存在于TABLE2中的所有记录，TABLE2中存在但不存在于TABLE1中的记录，以及在另一个表中没有匹配的Amount的记录。
我有两张桌子：
(TABLE 1)
CO_CODE ACCOUNT_ID CONTRACT STATUS AMT
A 7 101 ACTIVE 5,497.00
A 7 101 ACTIVE 5,482.00
A 15 106 INACTIVE 0.00
A 23 102 ACTIVE 4,562.00
A 31 102 ACTIVE 22.00
A 49 103 ACTIVE 1,900.00
A 49 103 ACTIVE 135.00
(TABLE 2)
Company Account_Number Amount Agreement
A 7 5,497.00 S000101
A 23 8,457.00 S000102
A 49 135.00 S000103
A 56 2,465.00 S000104
A 7 5,482.00 S000101
这两个表共享带有公司ID，帐号，金额和协议/合同＃的字段，其中TABLE2中的协议类型为Text，但在TABLE1中是数字。
到目前为止，我已经提出：
SELECT TABLE1.CO_CODE AS Company, TABLE1.ACCOUNT_ID AS [Account Number], TABLE1.CONTRACT As [Contract Number], TABLE1.STATUS AS Status, TABLE1.AMT, TABLE2.Amount
FROM TABLE1 LEFT JOIN TABLE2 ON TABLE1.ACCOUNT_ID = TABLE2.Account_Number
WHERE ((Exists (SELECT * FROM TABLE2 WHERE TABLE1.CO_CODE = TABLE2.Company AND TABLE1.ACCOUNT_ID = TABLE2.Account_number AND TABLE1.CONTRACT = Clng(MID(TABLE2.Agreement,5)) AND TABLE1.AMT = TABLE2.Amount))=False) OR ((Exists (SELECT * FROM TABLE1 WHERE TABLE1.CO_CODE = TABLE2.Company AND TABLE1.ACCOUNT_ID = TABLE2.Account_number AND TABLE1.CONTRACT = Clng(MID(TABLE2.Agreement,5)) AND TABLE1.AMT = TABLE2.Amount))=False)
UNION ALL
SELECT TABLE2.Company, TABLE2.Account_Number, CLng(MID(TABLE2.Agreement, 5)), TABLE1.ACC_STATUS, TABLE1.AMT, TABLE2.Amount
FROM TABLE2 LEFT JOIN TABLE1 ON TABLE1.ACCOUNT_ID = TABLE2.Account_Number
WHERE TABLE1.ACCOUNT_ID NOT IN (SELECT Account_Number FROM TABLE2) OR TABLE2.Account_Number NOT IN (SELECT ACCOUNT_ID FROM TABLE1);
这给了我结果：
Company Account Contract Status AMT Amount
A 15 106 INACTIVE 0.00
A 23 102 ACTIVE 4,562.00 8,457.00
A 31 102 ACTIVE 22.00
A 49 103 ACTIVE 1,900.00 135.00
A 56 104 2,465.00
金额为135.00的账户49不应显示135.00的金额，因为它出现在两个表中，但是1900.00的金额是正确的（它只出现在TABLE1中）。
有人可以告诉我为什么会发生这种情况以及如何解决这个问题吗？
我提前为MS Access SQL和本网站缺乏知识而道歉。过去一周我一直在努力想弄清楚如何获得理想的结果，我们将不胜感激。
答案 0 :(得分：0)
免责声明：我绝不是SQL的专家，因此我的解决方案可能效率低下甚至是错误的，但它正在我自己的测试环境中工作。
尝试以下方法：
SELECT T1.CO_CODE AS Company, T1.ACCOUNT_ID AS [Account Number], T1.STATUS AS Status, T1.CONTRACT As [Contract Number], T1.AMT AS [Table 1], "" AS [Table 2]
FROM TABLE1 T1
WHERE NOT EXISTS (
SELECT * FROM TABLE2 T2
WHERE T1.CO_CODE = T2.Company
AND T1.Account_ID = T2.Account_Number
AND T1.CONTRACT = CLng(MID(TABLE2.Agreement, 5))
AND T1.AMT = T2.Amount
)
UNION ALL
SELECT T2.Company, T2.Account_Number AS [Account Number], "" AS Status, CLng(MID(TABLE2.Agreement, 5)) AS [Contract Number], "" AS [Table 1], T2.Amount AS [Table 2]
FROM TABLE2 T2
WHERE NOT EXISTS (
SELECT * FROM TABLE1 T1
WHERE T1.CO_CODE = T2.Company
AND T1.Account_ID = T2.Account_Number
AND T1.CONTRACT = CLng(MID(TABLE2.Agreement, 5))
AND T1.AMT = T2.Amount
)
结果如下：
-----------------------------------------------------------------
|Company|Account Number| Status |Contract Number|Table 1|Table 2|
-----------------------------------------------------------------
| A | 15 |INACTIVE| 106 | 0 | |
| A | 23 | ACTIVE | 102 | 4562 | |
| A | 31 | ACTIVE | 102 | 22 | |
| A | 49 | ACTIVE | 103 | 1900 | |
| A | 23 | | 102 | | 8457 |
| A | 56 | | 104 | | 2465 |
-----------------------------------------------------------------
我不知道每个列的类型是什么，因此可能需要稍微修改一下查询以匹配您的数据。您可能还想将列重命名为其他内容，我只是在抛出数据。
请注意，每个表中有两个不同金额的记录会显示两次（即您示例中的帐户＃23）。我不知道这对你来说是否是可接受的行为，但这是我想出来的。
我希望这会有所帮助，或至少给你一些其他的尝试。