{"id":158795,"date":"2024-11-03T04:56:20","date_gmt":"2024-11-02T20:56:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158795\/"},"modified":"2024-11-03T04:56:21","modified_gmt":"2024-11-02T20:56:21","slug":"%e9%97%9c%e6%96%bcoracle-olap%e5%87%bd%e6%95%b8%e8%aa%9e%e6%b3%95%e7%9a%84%e7%b8%bd%e7%b5%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158795\/","title":{"rendered":"\u95dc\u65bcORACLE OLAP\u51fd\u6578\u8a9e\u6cd5\u7684\u7e3d\u7d50"},"content":{"rendered":"<h1 id=\"%e9%97%9c%e6%96%bcoracle-olap%e5%87%bd%e6%95%b8%e8%aa%9e%e6%b3%95%e7%9a%84%e7%b8%bd%e7%b5%90-NXGwlPAVSx\">\u95dc\u65bcORACLE OLAP\u51fd\u6578\u8a9e\u6cd5\u7684\u7e3d\u7d50<\/h1>\n<p>\u5728\u6578\u64da\u5206\u6790\u548c\u5546\u696d\u667a\u80fd\u7684\u9818\u57df\u4e2d\uff0cOracle OLAP\uff08\u806f\u6a5f\u5206\u6790\u8655\u7406\uff09\u63d0\u4f9b\u4e86\u4e00\u5957\u5f37\u5927\u7684\u5de5\u5177\u4f86\u9032\u884c\u591a\u7dad\u6578\u64da\u5206\u6790\u3002OLAP\u51fd\u6578\u662fOracle\u6578\u64da\u5eab\u4e2d\u7528\u65bc\u5206\u6790\u6578\u64da\u7684\u95dc\u9375\u7d44\u4ef6\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5f9e\u4e0d\u540c\u7684\u89d2\u5ea6\u4f86\u67e5\u770b\u548c\u5206\u6790\u6578\u64da\u3002\u672c\u6587\u5c07\u5c0dOracle OLAP\u51fd\u6578\u7684\u8a9e\u6cd5\u9032\u884c\u7e3d\u7d50\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"olap%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-NXGwlPAVSx\">OLAP\u51fd\u6578\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>OLAP\u51fd\u6578\u4e3b\u8981\u7528\u65bc\u5728\u67e5\u8a62\u4e2d\u9032\u884c\u591a\u7dad\u6578\u64da\u5206\u6790\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5728SQL\u67e5\u8a62\u4e2d\u4f7f\u7528\uff0c\u4e26\u4e14\u80fd\u5920\u5c0d\u6578\u64da\u9032\u884c\u5206\u7d44\u3001\u6392\u5e8f\u548c\u8a08\u7b97\u3002OLAP\u51fd\u6578\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u805a\u5408\u51fd\u6578\uff1a<\/strong>\u5982SUM\u3001AVG\u3001COUNT\u7b49\uff0c\u7528\u65bc\u8a08\u7b97\u6578\u64da\u7684\u7e3d\u548c\u3001\u5e73\u5747\u503c\u548c\u8a08\u6578\u3002<\/li>\n<li><strong>\u7a97\u53e3\u51fd\u6578\uff1a<\/strong>\u5982ROW_NUMBER\u3001RANK\u3001DENSE_RANK\u7b49\uff0c\u7528\u65bc\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\u70ba\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u5e8f\u865f\u6216\u6392\u540d\u3002<\/li>\n<li><strong>\u5206\u6790\u51fd\u6578\uff1a<\/strong>\u5982LEAD\u3001LAG\u7b49\uff0c\u7528\u65bc\u5728\u67e5\u8a62\u4e2d\u7372\u53d6\u76f8\u5c0d\u65bc\u7576\u524d\u884c\u7684\u5176\u4ed6\u884c\u7684\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"olap%e5%87%bd%e6%95%b8%e7%9a%84%e8%aa%9e%e6%b3%95-NXGwlPAVSx\">OLAP\u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n<p>OLAP\u51fd\u6578\u7684\u8a9e\u6cd5\u901a\u5e38\u9075\u5faa\u4ee5\u4e0b\u7d50\u69cb\uff1a<\/p>\n<pre><code>\n() OVER (\n    [PARTITION BY ]\n    [ORDER BY ]\n    [ROWS | RANGE BETWEEN  AND ]\n)\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u4ee3\u8868\u5177\u9ad4\u7684OLAP\u51fd\u6578\uff0c\u5982SUM\u3001AVG\u7b49\uff1b\u662f\u8981\u8a08\u7b97\u7684\u8868\u9054\u5f0f\uff1bPARTITION BY\u5b50\u53e5\u7528\u65bc\u5b9a\u7fa9\u6578\u64da\u7684\u5206\u5340\uff1bORDER BY\u5b50\u53e5\u7528\u65bc\u5b9a\u7fa9\u6392\u5e8f\u65b9\u5f0f\uff1bROWS\u6216RANGE\u5b50\u53e5\u5247\u7528\u65bc\u6307\u5b9a\u7a97\u53e3\u7684\u7bc4\u570d\u3002<\/p>\n<h2 id=\"olap%e5%87%bd%e6%95%b8%e7%9a%84%e7%a4%ba%e4%be%8b-NXGwlPAVSx\">OLAP\u51fd\u6578\u7684\u793a\u4f8b<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8sum%e5%87%bd%e6%95%b8%e8%a8%88%e7%ae%97%e6%af%8f%e5%80%8b%e9%83%a8%e9%96%80%e7%9a%84%e7%b8%bd%e9%8a%b7%e5%94%ae%e9%a1%8d-NXGwlPAVSx\">1. \u4f7f\u7528SUM\u51fd\u6578\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u7e3d\u92b7\u552e\u984d<\/h3>\n<pre><code>\nSELECT department_id,\n       SUM(salary) OVER (PARTITION BY department_id) AS total_salary\nFROM employees;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528SUM\u51fd\u6578\u4f86\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u7e3d\u85aa\u8cc7\u3002PARTITION BY\u5b50\u53e5\u5c07\u6578\u64da\u6309\u90e8\u9580\u9032\u884c\u5206\u5340\uff0c\u5f9e\u800c\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u7e3d\u85aa\u8cc7\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8row_number%e5%87%bd%e6%95%b8%e7%82%ba%e6%af%8f%e5%80%8b%e9%83%a8%e9%96%80%e7%9a%84%e5%93%a1%e5%b7%a5%e5%88%86%e9%85%8d%e6%8e%92%e5%90%8d-NXGwlPAVSx\">2. \u4f7f\u7528ROW_NUMBER\u51fd\u6578\u70ba\u6bcf\u500b\u90e8\u9580\u7684\u54e1\u5de5\u5206\u914d\u6392\u540d<\/h3>\n<pre><code>\nSELECT employee_id,\n       department_id,\n       ROW_NUMBER() OVER (PARTITION BY department_id ORDER BY salary DESC) AS rank\nFROM employees;\n<\/code><\/pre>\n<p>\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528ROW_NUMBER\u51fd\u6578\u70ba\u6bcf\u500b\u90e8\u9580\u7684\u54e1\u5de5\u6839\u64da\u85aa\u8cc7\u9032\u884c\u6392\u540d\u3002ORDER BY\u5b50\u53e5\u78ba\u4fdd\u4e86\u85aa\u8cc7\u6700\u9ad8\u7684\u54e1\u5de5\u6392\u540d\u7b2c\u4e00\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8lead%e5%87%bd%e6%95%b8%e7%8d%b2%e5%8f%96%e4%b8%8b%e4%b8%80%e8%a1%8c%e7%9a%84%e8%96%aa%e8%b3%87-NXGwlPAVSx\">3. \u4f7f\u7528LEAD\u51fd\u6578\u7372\u53d6\u4e0b\u4e00\u884c\u7684\u85aa\u8cc7<\/h3>\n<pre><code>\nSELECT employee_id,\n       salary,\n       LEAD(salary) OVER (ORDER BY employee_id) AS next_salary\nFROM employees;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0cLEAD\u51fd\u6578\u7528\u65bc\u7372\u53d6\u6bcf\u4f4d\u54e1\u5de5\u7684\u4e0b\u4e00\u4f4d\u54e1\u5de5\u7684\u85aa\u8cc7\uff0c\u9019\u5c0d\u65bc\u6bd4\u8f03\u85aa\u8cc7\u8b8a\u5316\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NXGwlPAVSx\">\u7e3d\u7d50<\/h2>\n<p>Oracle OLAP\u51fd\u6578\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u5206\u6790\u80fd\u529b\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5f9e\u591a\u500b\u7dad\u5ea6\u4f86\u5206\u6790\u548c\u7406\u89e3\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\uff0c\u6578\u64da\u5206\u6790\u5e2b\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u9032\u884c\u5831\u544a\u548c\u6c7a\u7b56\u652f\u6301\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5206\u6790\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u5206\u6790\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7e3d\u7d50ORACLE OLAP\u51fd\u6578\u8a9e\u6cd5\uff0c\u6df1\u5165\u63a2\u8a0e\u5176\u7528\u6cd5\u3001\u529f\u80fd\u53ca\u61c9\u7528\u7bc4\u4f8b\uff0c\u52a9\u60a8\u8f15\u9b06\u638c\u63e1\u6578\u64da\u5206\u6790\u6280\u5de7\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-158795","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=158795"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158795\/revisions"}],"predecessor-version":[{"id":158796,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158795\/revisions\/158796"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}