{"id":176,"date":"2011-10-04T23:31:14","date_gmt":"2011-10-04T15:31:14","guid":{"rendered":"https:\/\/yangtingkun.net\/?p=176"},"modified":"2011-10-05T03:41:24","modified_gmt":"2011-10-04T19:41:24","slug":"%e5%a4%96%e9%83%a8%e8%a1%a8%e7%9a%84rowid%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/yangtingkun.net\/?p=176","title":{"rendered":"\u5916\u90e8\u8868\u7684ROWID\u4fe1\u606f"},"content":{"rendered":"<p>ROWID\u662f\u8bbf\u95ee\u6570\u636e\u5e93\u4e2d\u8868\u7684\u7269\u7406\u5730\u5740\u4fe1\u606f\uff0cOracle\u63d0\u4f9b\u4e86ROWID\u4f2a\u5217\uff0c\u53ef\u4ee5\u901a\u8fc7ROWID\u76f4\u63a5\u8bbf\u95ee\u8868\u4e2d\u7684\u6570\u636e\u3002<br \/>\nROWNUM\u56fa\u5316\u5916\u90e8\u8868\u7ed3\u679c\u96c6\u5b58\u5728\u95ee\u9898\uff1a<a href=\"https:\/\/yangtingkun.net\/?p=38\">https:\/\/yangtingkun.net\/?p=38<\/a><br \/>\nROWNUM\u56fa\u5316\u5916\u90e8\u8868\u7ed3\u679c\u96c6\u5b58\u5728\u95ee\u9898\uff08\u4e8c\uff09\uff1a<a href=\"https:\/\/yangtingkun.net\/?p=103\">https:\/\/yangtingkun.net\/?p=103<\/a><br \/>\n\u5728\u6d4b\u8bd5\u5916\u90e8\u8868\u65f6\uff0c\u610f\u5916\u53d1\u73b0\uff0c\u5916\u90e8\u8868\u540c\u6837\u5b58\u5728ROWID\u4f2a\u5217\uff1a<\/p>\n<pre lang='SQL'>SQL> create directory d_alert as 'D:\\ORACLE\\PRODUCT\\ADMIN\\YTK102\\BDUMP';\r\n\u76ee\u5f55\u5df2\u521b\u5efa\u3002\r\nSQL> create table t_alert\r\n  2  (text varchar2(1000)\r\n  3  )\r\n  4  organization external\r\n  5  (type oracle_loader\r\n  6  default directory d_alert\r\n  7  access parameters\r\n  8  (records delimited by newline\r\n  9  fields (text (1:255) char))\r\n 10  location ('alert_ytk102.log'));\r\n\u8868\u5df2\u521b\u5efa\u3002\r\nSQL> select * from t_alert where rownum < 10;\r\nTEXT\r\n-----------------------------------------------------------------------------\r\nDump file d:\\oracle\\product\\admin\\ytk102\\bdump\\alert_ytk102.log\r\nSat Dec 25 15:55:43  2010\r\nORACLE V10.2.0.5.0 - Production vsnsta=0\r\nvsnsql=14 vsnxtr=3\r\nWindows NT Version V6.1\r\nCPU                 : 4 - type 586, 2 Physical Cores\r\nProcess Affinity    : 0x00000000\r\nMemory (Avail\/Total): Ph:1594M\/2995M, Ph+PgF:4318M\/5989M, VA:1911M\/2047M\r\nSat Dec 25 15:55:43  2010\r\n\u5df2\u9009\u62e99\u884c\u3002\r\nSQL> SELECT ROWID FROM T_ALERT WHERE ROWNUM < 10;\r\nROWID\r\n-----------------------\r\n(AADRCQAAAAAAAAAAAAAAAA\r\n(AADRCQAAAAAAAAAAAAAAQQ\r\n(AADRCQAAAAAAAAAAAAAAXA\r\n(AADRCQAAAAAAAAAAAAAAhg\r\n(AADRCQAAAAAAAAAAAAAAmg\r\n(AADRCQAAAAAAAAAAAAAAtA\r\n(AADRCQAAAAAAAAAAAAAA6g\r\n(AADRCQAAAAAAAAAAAAABDA\r\n(AADRCQAAAAAAAAAAAAABVg\r\n\u5df2\u9009\u62e99\u884c\u3002<\/pre>\n<p>\u663e\u7136\u5916\u90e8\u8868\u7684ROWID\u548c\u666e\u901a\u8868\u7684ROWID\u6709\u7740\u660e\u663e\u7684\u533a\u522b\uff0c\u5176\u957f\u5ea6\u5e76\u975e18\u4f4d\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0c\u5916\u90e8\u8868\u7684ROWID\u5e76\u975e\u662fOBJECT_ID + RELATIVE FILE_ID + BLOCK_NUMBER + ROW_NUMBER\u683c\u5f0f\u3002<br \/>\n\u65e2\u7136\u5916\u90e8\u8868\u7684ROWID\u5e76\u4e0d\u4ee3\u8868\u4e00\u4e2a\u7269\u7406\u5730\u5740\uff0c\u56e0\u6b64\u4e00\u822c\u4e5f\u6ca1\u6709\u673a\u4f1a\u53bb\u4f7f\u7528\u8fd9\u4e2aROWID\uff0c\u4e0d\u8fc7\u6709\u65f6\u786e\u5b9e\u9700\u8981\u4f7f\u7528\u4e00\u4e2aROWID\u6765\u89e3\u51b3\u771f\u5b9e\u7684\u95ee\u9898\uff1a<\/p>\n<pre lang='SQL'>SQL> WITH A AS (SELECT ROW_NUMBER() OVER(ORDER BY ROWID) RN, TEXT FROM T_ALERT)\r\n  2  SELECT * FROM A B \r\n  3  WHERE B.RN >= (SELECT MIN(C.RN) FROM A C WHERE TEXT = 'Mon Sep 19 07:18:21  2011');\r\n        RN TEXT\r\n---------- --------------------------------------------------------------------------------\r\n      5739 Mon Sep 19 07:18:21  2011\r\n      5740 Successfully onlined Undo Tablespace 1.\r\n      5741 Mon Sep 19 07:18:21  2011\r\n      5742 SMON: enabling tx recovery\r\n      5743 Mon Sep 19 07:18:21  2011\r\n      5744 Database Characterset is ZHS16GBK\r\n      5745 Opening with internal Resource Manager plan\r\n      5746 replication_dependency_tracking turned off (no async multimaster replication found)\r\n      5747 Starting background process QMNC\r\n      5748 QMNC started with pid=17, OS id=5412\r\n      5749 Mon Sep 19 07:18:29  2011\r\n      5750 Completed: alter database open\r\n\u5df2\u9009\u62e912\u884c\u3002<\/pre>\n<p>\u7531\u4e8eROW_NUMBER\u5206\u6790\u51fd\u6570\u9700\u8981\u4e00\u4e2aORDER BY\u6392\u5e8f\u5b57\u6bb5\uff0c\u800c\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f9d\u8d56\u4e8e\u5916\u90e8\u8868\u7684\u8bfb\u53d6\u987a\u5e8f\uff0c\u800c\u5e76\u6ca1\u6709\u4efb\u4f55\u4e00\u4e2a\u5217\u80fd\u6807\u8bc6\u8fd9\u4e2a\u987a\u5e8f\uff0c\u800cROWID\u53d8\u6210\u4e86\u552f\u4e00\u7684\u9009\u9879\uff0c\u6070\u597dOracle\u5728\u5b9e\u73b0\u5916\u90e8\u8868\u7684\u4f2a\u5217\u7684\u65f6\u5019\uff0cROWID\u7684\u5927\u5c0f\u662f\u6839\u636e\u5916\u90e8\u8868\u6570\u636e\u8bfb\u53d6\u987a\u5e8f\u9012\u589e\u7684\uff0c\u56e0\u6b64\u8fd9\u91cc\u4f7f\u7528ROWID\u4f5c\u4e3aORDER BY\u7684\u6392\u5e8f\u5217\uff0c\u53ef\u4ee5\u6ee1\u8db3\u67e5\u8be2\u7684\u8981\u6c42\uff0c\u8fd9\u4e5f\u662f\u5916\u90e8\u8868ROWID\u6709\u610f\u4e49\u7684\u5e94\u7528\u4e4b\u4e00\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ROWID\u662f\u8bbf\u95ee\u6570\u636e\u5e93\u4e2d\u8868\u7684\u7269\u7406\u5730\u5740\u4fe1\u606f\uff0cOracle\u63d0\u4f9b\u4e86ROWID\u4f2a\u5217\uff0c\u53ef\u4ee5\u901a\u8fc7ROWID\u76f4\u63a5\u8bbf\u95ee\u8868\u4e2d\u7684\u6570\u636e\u3002 ROWNUM\u56fa\u5316\u5916\u90e8\u8868\u7ed3\u679c\u96c6\u5b58\u5728\u95ee\u9898\uff1ahttps:\/\/yangtingkun.net\/?p=38 ROWNUM\u56fa\u5316\u5916\u90e8\u8868\u7ed3\u679c\u96c6\u5b58\u5728\u95ee\u9898\uff08\u4e8c\uff09\uff1ahttps:\/\/yangtingkun.net\/?p=103 \u5728\u6d4b\u8bd5\u5916\u90e8\u8868\u65f6\uff0c\u610f\u5916\u53d1\u73b0\uff0c\u5916\u90e8\u8868\u540c\u6837\u5b58\u5728ROWID\u4f2a\u5217\uff1a SQL> create directory d_alert as &#8216;D:\\ORACLE\\PRODUCT\\ADMIN\\YTK102\\BDUMP&#8217;; \u76ee\u5f55\u5df2\u521b\u5efa\u3002 SQL> create table t_alert 2 (text varchar2(1000) 3 ) 4 organization external 5 (type oracle_loader 6 default directory d_alert 7 access parameters 8 (records delimited by newline 9 fields &hellip; <a href=\"https:\/\/yangtingkun.net\/?p=176\">Continue reading <span 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