{"id":410,"date":"2009-10-28T13:55:38","date_gmt":"2009-10-28T10:55:38","guid":{"rendered":"http:\/\/blog.yavor.info\/?p=410"},"modified":"2009-12-17T11:55:03","modified_gmt":"2009-12-17T08:55:03","slug":"%d0%bd%d0%b5-%d1%81%d0%bc%d0%b5-%d1%81%d0%b0%d0%bc%d0%b8-%d1%87%d0%b0%d1%81%d1%82-3","status":"publish","type":"post","link":"http:\/\/blog.yavor.info\/?p=410","title":{"rendered":"\u041d\u0435 \u0441\u043c\u0435 \u0441\u0430\u043c\u0438, \u0447\u0430\u0441\u0442 3"},"content":{"rendered":"<p>(<a href=\"http:\/\/blog.yavor.info\/?p=409\">\u043a\u044a\u043c \u0447\u0430\u0441\u0442 2<\/a>)<\/p>\n<p>\u0415\u0434\u0438\u043d \u043c\u0430\u043b\u043a\u043e \u043f\u043e-\u0434\u043e\u0431\u044a\u0440 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0438\u0437\u0433\u043b\u0435\u0436\u0434\u0430 \u0442\u0430\u043a\u0430:<\/p>\n<p>&#8211; \u0412 \u043d\u0430\u0447\u0430\u043b\u043e\u0442\u043e \u0432\u0437\u0435\u043c\u0430\u043c\u0435 \u0442\u0435\u043a\u0443\u0449\u0430\u0442\u0430 \u0434\u0430\u0442\u0430<br \/>\n&#8211; \u041a\u043e\u0433\u0430\u0442\u043e \u0438\u0437\u0431\u0438\u0440\u0430\u043c\u0435 \u043a\u043e\u0438 \u0434\u0430\u043d\u043d\u0438 \u0434\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0438\u043c, \u043e\u0441\u0432\u0435\u043d processed=0 \u0433\u043b\u0435\u0434\u0430\u043c\u0435 \u0438 \u0434\u0430\u0442\u0430\u0442\u0430 \u043d\u0430 \u0437\u0430\u0440\u0435\u0436\u0434\u0430\u043d\u0435 &#8211;  \u0434\u0430 \u0435 \u043f\u043e-\u043c\u0430\u043b\u043a\u0430 \u043e\u0442 \u0434\u0430\u0442\u0430\u0442\u0430 \u0437\u0430 \u043d\u0430\u0447\u0430\u043b\u043e \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430\u0442\u0430, \u043a\u043e\u044f\u0442\u043e \u0441\u0435 \u0437\u0430\u043f\u043e\u043c\u043d\u0438\u043b\u0438<br \/>\n&#8211; \u043a\u043e\u0433\u0430\u0442\u043e \u0438\u0437\u0442\u0440\u0438\u0432\u0430\u043c\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0435\u043d\u0438\u0442\u0435 \u0434\u0430\u043d\u043d\u0438 \u043e\u0442 loader \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u0442\u0430, \u043e\u0442\u043d\u043e\u0432\u043e \u0438\u0437\u0442\u0440\u0438\u0432\u0430\u043c\u0435 \u0441\u0430\u043c\u043e \u0442\u0435\u0437\u0438, \u043a\u043e\u0438\u0442\u043e \u0441\u0430 &#8222;\u0437\u0430\u0440\u0435\u0434\u0435\u043d\u0438&#8220; \u043f\u0440\u0435\u0434\u0438 \u043d\u0430\u0447\u0430\u043b\u043e\u0442\u043e \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430\u0442\u0430<\/p>\n<p>\u041f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0430\u0442\u0430 \u0431\u0438 \u0438\u0437\u0433\u043b\u0435\u0436\u0434\u0430\u043b\u0430 \u0442\u0430\u043a\u0430:<\/p>\n<pre lang=\"plsql\">\r\ncreate or replace procedure Process_New_Data2 is\r\n  -- example code - has a BUG!!!\r\n  transfer_date date;\r\nbegin\r\n  -- get the time when we start the transfer\r\n  transfer_date := sysdate;\r\n\r\n  -- process the loaded batches\r\n  insert \/*+append*\/\r\n  into prod_table\r\n    select -- do some processing\r\n     batch_id, get_something(column1, column2), calculate_something(column3, column4),\r\n     RANK() over(PARTITION BY column5, column6 order by column7) rn, \r\n     column8, column9, ...\r\n      from loader_table\r\n     where batch_id in (select batch_id\r\n                          from batch_log\r\n                         where load_time < transfer_date -- get only the batches loaded before we start\r\n                           and processed = 0);\r\n\r\n  -- delete the rows from loader table\r\n  delete from loader_table\r\n   where batch_id in (select batch_id\r\n                        from batch_log\r\n                       where load_time < transfer_date -- delete only the batches loaded before we start\r\n                         and processed = 0);\r\n\r\n  -- mark the batches as processed\r\n  update batch_log\r\n     set processed = 1\r\n   where load_time < transfer_date -- mark only the batches loaded before we start\r\n     and processed = 0;\r\n\r\n  commit;\r\nend;\r\n<\/pre>\n<p>\u0417\u0430 \u0441\u044a\u0436\u0430\u043b\u0435\u043d\u0438\u0435 \u0442\u043e\u0432\u0430 \u043e\u0442\u043d\u043e\u0432\u043e \u043d\u0435 \u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0430\u043d\u043e \u0440\u0435\u0448\u0435\u043d\u0438\u0435. \u0428\u0430\u043d\u0441\u0430 \u0437\u0430 \u0437\u0430\u0433\u0443\u0431\u0430 \u043d\u0430 \u0434\u0430\u043d\u043d\u0438 \u0442\u0443\u043a \u0435 \u043c\u043d\u043e\u0433\u043e \u043f\u043e-\u043c\u0430\u043b\u044a\u043a, \u043d\u043e \u043d\u0435 \u0435 \u043d\u0443\u043b\u0435\u0432, \u0438 \u043c\u043d\u043e\u0433\u043e \u0437\u0430\u0432\u0438\u0441\u0438 \u043e\u0442 \u043c\u0435\u0442\u043e\u0434\u0430 \u043d\u0430 \u0437\u0430\u0440\u0435\u0436\u0434\u0430\u043d\u0435 \u043d\u0430 \u043d\u043e\u0432\u0438 \u0434\u0430\u043d\u043d\u0438.<\/p>\n<p>\u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441\u0435 \u0438\u0437\u0440\u0430\u0437\u044f\u0432\u0430\u043d\u0430 \u0435\u0434\u043d\u043e \u043d\u0438\u0432\u043e \u043f\u043e-\u0434\u044a\u043b\u0431\u043e\u043a\u043e: \u043d\u044f\u043a\u043e\u044f \u0441\u0435\u0441\u0438\u044f \u043c\u043e\u0436\u0435 \u0434\u0430 \u0435 \u0437\u0430\u0440\u0435\u0434\u0438\u043b\u0430 \u0434\u0430\u043d\u043d\u0438 \u043f\u0440\u0435\u0434\u0438 \u043d\u044f\u043a\u043e\u043b\u043a\u043e \u0441\u0435\u043a\u0443\u043d\u0434\u0438 (\u043c\u043e\u0436\u0435 \u0438 \u043c\u0438\u043d\u0443\u0442\u0438), \u043d\u043e \u0434\u0430 \u043d\u0435 \u0435 <code>commit<\/code>-\u043d\u0430\u043b\u0430 \u043f\u0440\u043e\u043c\u0435\u043d\u0438\u0442\u0435. \u0421\u044a\u043e\u0442\u0432\u0435\u0442\u043d\u043e \u043d\u0430\u0448\u0438\u044f\u0442 <code>inser-select<\/code> \u043d\u044f\u043c\u0430 \u0434\u0430 \u0433\u0438 \u0445\u0432\u0430\u043d\u0435, \u043d\u043e \u0434\u043e\u043a\u0430\u0442\u043e \u0432\u044a\u0440\u0432\u0438 \u0442\u043e\u0439, \u0434\u0440\u0443\u0433\u0430\u0442\u0430 \u0441\u0435\u0441\u0438\u044f \u0438\u043c\u0430 \u0434\u043e\u0441\u0442\u0430\u0442\u044a\u0447\u043d\u043e \u0432\u0440\u0435\u043c\u0435 \u0434\u0430 \u043d\u0430\u043f\u0440\u0430\u0432\u0438 <code>commit<\/code> \u0438 \u043d\u044f\u043a\u043e\u043b\u043a\u043e \u043c\u0438\u043b\u0438\u043e\u043d\u0430 \u0440\u0435\u0434\u0430 \u0434\u0430 \u0441\u0435 \u043f\u043e\u044f\u0432\u044f\u0442 \u0437\u0430 \u043c\u0430\u043b\u043a\u043e, \u0434\u043e\u043a\u0430\u0442\u043e <code>delete<\/code>-\u0430 \u043d\u0435 \u0433\u0438 \u0438\u0437\u0442\u0440\u0438\u0435 \u0431\u0435\u0437\u0441\u043b\u0430\u0432\u043d\u043e.<\/p>\n<p>(<a href=\"http:\/\/blog.yavor.info\/?p=430\">\u043a\u044a\u043c \u0447\u0430\u0441\u0442 4<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>(<a href=\"http:\/\/blog.yavor.info\/?p=409\">\u043a\u044a\u043c \u0447\u0430\u0441\u0442 2<\/a>)<\/p>\n<p>\u0415\u0434\u0438\u043d \u043c\u0430\u043b\u043a\u043e \u043f\u043e-\u0434\u043e\u0431\u044a\u0440 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0435 \u0441\u043b\u0435\u0434\u043d\u0438\u044f\u0442:<\/p>\n<p>&#8211; \u0412 \u043d\u0430\u0447\u0430\u043b\u043e\u0442\u043e \u0432\u0437\u0435\u043c\u0430\u043c\u0435 \u0442\u0435\u043a\u0443\u0449\u0430\u0442\u0430 \u0434\u0430\u0442\u0430<br \/>\n&#8211; \u041a\u043e\u0433\u0430\u0442\u043e \u0438\u0437\u0431\u0438\u0440\u0430\u043c\u0435 \u043a\u043e\u0438 \u0434\u0430\u043d\u043d\u0438 \u0434\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0438\u043c, \u043e\u0441\u0432\u0435\u043d processed=0 \u0433\u043b\u0435\u0434\u0430\u043c\u0435 \u0438 \u0434\u0430\u0442\u0430\u0442\u0430 \u043d\u0430 \u0437\u0430\u0440\u0435\u0436\u0434\u0430\u043d\u0435 &#8211;  \u0434\u0430 \u0435 \u043f\u043e-\u043c\u0430\u043b\u043a\u0430 \u043e\u0442 \u0434\u0430\u0442\u0430\u0442\u0430 \u0437\u0430 \u043d\u0430\u0447\u0430\u043b\u043e \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430\u0442\u0430, \u043a\u043e\u044f\u0442\u043e \u0441\u0435 \u0437\u0430\u043f\u043e\u043c\u043d\u0438\u043b\u0438<br \/>\n&#8211; \u043a\u043e\u0433\u0430\u0442\u043e \u0438\u0437\u0442\u0440\u0438\u0432\u0430\u043c\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0435\u043d\u0438\u0442\u0435 \u0434\u0430\u043d\u043d\u0438 \u043e\u0442 loader \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u0442\u0430, \u043e\u0442\u043d\u043e\u0432\u043e \u0438\u0437\u0442\u0440\u0438\u0432\u0430\u043c\u0435 \u0441\u0430\u043c\u043e \u0442\u0435\u0437\u0438, \u043a\u043e\u0438\u0442\u043e \u0441\u0430 &#8222;\u0437\u0430\u0440\u0435\u0434\u0435\u043d\u0438&#8220; \u043f\u0440\u0435\u0434\u0438 \u043d\u0430\u0447\u0430\u043b\u043e\u0442\u043e \u043d\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430\u0442\u0430<\/p>\n<p>\u041f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0430\u0442\u0430 \u0431\u0438 \u0438\u0437\u0433\u043b\u0435\u0436\u0434\u0430\u043b\u0430 \u0442\u0430\u043a\u0430:<br \/>\n(<a href=\"http:\/\/blog.yavor.info\/?p=410\">A\u043a\u043e \u0442\u0438 \u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, \u0447\u0435\u0442\u0438 \u043d\u0430\u0442\u0430\u0442\u044a\u043a&#8230;<\/a>)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/blog.yavor.info\/index.php?rest_route=\/wp\/v2\/posts\/410"}],"collection":[{"href":"http:\/\/blog.yavor.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.yavor.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.yavor.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.yavor.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=410"}],"version-history":[{"count":0,"href":"http:\/\/blog.yavor.info\/index.php?rest_route=\/wp\/v2\/posts\/410\/revisions"}],"wp:attachment":[{"href":"http:\/\/blog.yavor.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.yavor.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=410"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.yavor.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}