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[英]SQL two different tables in combobox and textfield from same database in Netbeans
[英]SQL select rows from two different tables with different column names
我想從兩個不同的表(TABLE_A和TABLE_B)中選擇行。 我正在使用oracle db和hibernate。 這是我的桌子:
這是TABLE_A
+----+--------+---------+-----------+---------------------+---------------------+
| ID | AMOUNT | BALANCE | STATUS | CREATE_DATE | END_DATE |
+----+--------+---------+-----------+---------------------+---------------------+
| 1 | 5 | 5 | FINISHED | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
| 2 | 12 | 17 | TIMED_OUT | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
| 3 | 21 | 38 | COMMITED | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
+----+--------+---------+-----------+---------------------+---------------------+
這是TABLE_B
+----+----------------+---------------+----------------+---------------------+
| ID | PAYMENT_AMOUNT | TOTAL_BALANCE | PAYMENT_STATUS | REQUEST_TIMESTAMP |
+----+----------------+---------------+----------------+---------------------+
| 1 | 3 | 23 | FAILED | 2014-02-27 15:10:20 |
| 2 | 12 | 11 | FULFILLED | 2014-02-27 15:10:20 |
| 3 | 2 | 9 | TIMED_OUT | 2014-02-27 15:10:20 |
+----+----------------+---------------+----------------+---------------------+
我想做的是,我需要通過單個查詢獲得如下結果:
+--------+---------+-----------+---------------------+---------------------+
| AMOUNT | BALANCE | STATUS | DATE | END_DATE |
+--------+---------+-----------+---------------------+---------------------+
| 5 | 5 | FINISHED | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
| 12 | 17 | TIMED_OUT | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
| 21 | 38 | COMMITED | 2014-02-27 15:10:20 | 2014-02-27 15:10:20 |
| 3 | 23 | FAILED | 2014-02-27 15:10:20 | null |
| 12 | 11 | FULFILLED | 2014-02-27 15:10:20 | null |
| 2 | 9 | TIMED_OUT | 2014-02-27 15:10:20 | null |
+--------+---------+-----------+---------------------+---------------------+
結果ordered by DATE
。 列描述如下:
AMOUNT = TABLE_A.AMOUNT or TABLE_B.PAYMENT_AMOUNT
BALANCE = TABLE_A.BALANCe or TABLE_B.TOTAL_BALANCE
STATUS = TABLE_A.STATUS or TABLE_B.PAYMENT_STATUS
DATE = TABLE_A.CREATE_DATE or TABLE_B.REQUEST_TIMESTAMP
END_DATE = TABLE_A.END_DATE or null
有什么辦法可以在oracle db中獲得這些結果以及將這些結果綁定到java中的休眠對象?
嘗試這樣的事情
select * from (
select id as amount, ... from t1
union all
select id as amount, ... from t2
) t order by date
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