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PLSQL需要匹配嵌套記錄

2017-06-05 131 views
2

我有一張表格，其中記錄顯示物品何時擱置或釋放。 嵌套可能。一些記錄混淆了，需要新的邏輯。 爲了解決這個問題，我需要將發佈與保留相匹配 - 下面我有一個粗略繪製的示例 - id列不存在，但是是我需要生成的。PLSQL需要匹配嵌套記錄

Example data

我從沒有唯一標識符我可以使用，沒有什麼工作表，以匹配釋放，除了在它們發生的順序舉行。 我一直在玩了一會兒並不能釘住它。

問題來了，當我得到2個或更多的持有罪一行沒有釋放。如果我們有hold1，hold2和hold3，那麼之後的版本應該按照release3，release2，release1的順序讀取。

任何幫助或建議將不勝感激。

CREATE TABLE "TBL_ACTIONS" 
    ("ITEM_ID" CHAR(5 BYTE), 
    "ACTION_DATE" DATE, 
    "ACTION" VARCHAR2(40 BYTE) 
    ); 

Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/11/16 01:00:28','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/11/16 01:12:45','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/11/16 16:00:19','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/11/16 16:12:40','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('20/11/16 14:52:42','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('20/11/16 16:00:10','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('24/11/16 17:52:49','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('24/11/16 21:12:40','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('24/11/16 23:12:48','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('24/11/16 23:32:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/11/16 14:40:17','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/11/16 14:40:18','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/11/16 19:12:40','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('29/11/16 08:17:59','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('29/11/16 08:17:59','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('29/11/16 08:18:40','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('29/11/16 08:18:40','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('01/12/16 11:03:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/12/16 08:10:51','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/12/16 11:27:06','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/12/16 11:27:11','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/12/16 07:10:07','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/12/16 07:10:07','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('16/12/16 14:37:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('16/12/16 14:37:40','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('22/12/16 12:20:52','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('22/12/16 12:20:52','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('22/12/16 12:29:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('22/12/16 12:29:39','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/01/17 10:23:47','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/01/17 10:23:48','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/01/17 11:52:26','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/01/17 11:52:26','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('09/01/17 13:47:52','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('09/01/17 13:47:59','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('25/01/17 09:42:35','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('25/01/17 09:42:35','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/01/17 12:11:24','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/01/17 12:11:31','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/01/17 12:12:20','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/01/17 12:12:28','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/02/17 09:01:48','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/02/17 09:01:48','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/02/17 09:02:58','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/02/17 09:02:58','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/02/17 16:57:47','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/02/17 16:57:47','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('07/02/17 16:56:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('07/02/17 16:56:47','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('07/02/17 16:57:12','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('07/02/17 16:57:21','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('08/02/17 16:41:54','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('08/02/17 16:41:54','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('08/02/17 17:21:53','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('08/02/17 17:22:04','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('09/02/17 16:38:35','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('09/02/17 16:38:43','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/02/17 07:40:05','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/02/17 07:40:13','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/02/17 23:31:52','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/02/17 23:31:52','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('11/02/17 09:16:22','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('11/02/17 09:16:23','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/02/17 16:48:13','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/02/17 16:48:13','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/02/17 16:49:16','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/02/17 16:49:17','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('21/02/17 15:42:40','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('21/02/17 17:25:08','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('21/02/17 17:25:09','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('21/02/17 17:25:18','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('21/02/17 17:25:18','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('27/02/17 16:51:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('27/02/17 16:51:39','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('27/02/17 16:51:46','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('27/02/17 16:51:46','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/02/17 14:06:59','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/02/17 14:06:59','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/02/17 14:07:10','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/02/17 14:07:10','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:04:08','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:04:08','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:04:09','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:04:09','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:23:27','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:23:27','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:23:27','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:23:27','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:55:55','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:55:55','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:55:55','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('03/03/17 10:55:55','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 13:23:25','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 13:23:25','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 13:23:26','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 13:23:26','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 15:07:20','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('06/03/17 15:10:09','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('08/03/17 15:35:45','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 12:17:36','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 12:17:37','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 13:22:47','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 13:22:55','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 13:23:20','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/03/17 13:23:27','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('18/03/17 07:12:27','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('18/03/17 07:12:28','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/03/17 16:17:54','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/03/17 17:52:44','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/03/17 18:12:49','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/03/17 23:32:45','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('01/04/17 20:32:34','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/04/17 19:53:43','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/04/17 20:52:44','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('04/04/17 21:39:18','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('04/04/17 21:45:23','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('05/04/17 20:54:49','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('05/04/17 21:00:19','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('10/04/17 17:35:13','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/04/17 11:29:33','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/04/17 21:32:44','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('18/04/17 00:40:12','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('23/04/17 09:20:35','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('23/04/17 10:52:41','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('25/04/17 20:40:50','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('25/04/17 20:52:47','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/04/17 01:13:17','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/04/17 04:32:35','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/04/17 16:12:47','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/04/17 16:20:08','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/04/17 16:40:32','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/04/17 18:20:19','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('01/05/17 03:12:06','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/05/17 16:58:17','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('17/05/17 16:58:17','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/05/17 15:10:28','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('19/05/17 15:10:28','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('28/05/17 21:14:06','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('30/05/17 15:41:58','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/05/17 10:05:00','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/05/17 10:05:11','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/05/17 10:05:17','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('31/05/17 10:05:27','DD/MM/YY HH24:MI:SS'),'Hold'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('02/06/17 00:30:22','DD/MM/YY HH24:MI:SS'),'Release'); 
    Insert into TBL_ACTIONS (ITEM_ID,ACTION_DATE,ACTION) values ('ITEM1',to_date('04/06/17 06:43:33','DD/MM/YY HH24:MI:SS'),'Hold');

來源

2017-06-05 Gerard McLaughlin

+2

嗨傑拉德 - 這很難遵循你到底在做什麼。有沒有可能提供表格創建腳本和示例數據。然後你需要清楚你想要應用的邏輯。有了這些，你將有更好的機會得到一個體面的答案。 –

+0

嗨，是的生病嘗試和把東西放在一起。這是很難解釋，不確定使用正確的條款。我需要將每個版本都匹配到正確的等級。問題在於連續創建了2個或更多個暫存。 –

+1

謝謝傑拉德。不同的oracle版本有不同的工具可以在這裏應用。你能包括你的oracle版本嗎？謝謝 – alexgibbs

回答

1

根據評論，我假設你有一個ID列可用於排序。我想可能有更有效的方法來做以下事情（我會搜索後進先出或後進先出），但我想看看我能在自己的蒸汽下想出什麼：

With PushPop as (
select 
    nh1.Id, 
    nh1.Activity, 
    sum(case when nh2.Activity = 'Release' then -1 else 1 end) as PushPop 
from 
    NestedHolds nh1 
    LEFT JOIN NestedHolds nh2 ON 
     nh1.Id >= nh2.Id 
group by 
    nh1.Id, 
    nh1.Activity 
order by 
    nh1.id 
) 

SELECT 
nh.*, 
NewIDs.NewID 
from 
NestedHolds nh 
JOIN 
(
SELECT 
    a.Id HoldId, 
    min(b.Id) as ReleaseId, 
    row_number() over (order by a.Id) NewID 
FROM 
    PushPop a 
    JOIN PushPop b ON 
     a.Id < b.Id 
     AND a.PushPop = b.PushPop + 1 
WHERE 
a.Activity = 'Hold' 
AND b.Activity = 'Release' 
GROUP BY 
    a.Id 
order by 
a.Id 
) NewIDs on nh.Id in (NewIDs.HoldID, NewIDs.ReleaseID) 
order by nh.id 
;

來源

2017-06-05 15:46:50

+0

史蒂夫這看起來不錯，只是運行選擇，它看起來不錯。要用它來更新我的數據。 我真的很感謝你的幫助 - 謝謝。 –

+0

太棒了。通過感謝您，並幫助其他用戶找到有用的內容，您是否可以將我的答案標記爲已接受（並且如果可能，請立即行動起來）？我很喜歡這個問題，實際上，我自己搜索「LIFO」的東西大多數沒有那麼有用。 –

+1

完成。分數沒有改變 - 我的名聲太低了:(就像試圖拉入夜總會 –

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