{"id":160427,"date":"2024-11-03T22:30:21","date_gmt":"2024-11-03T14:30:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160427\/"},"modified":"2024-11-03T22:30:22","modified_gmt":"2024-11-03T14:30:22","slug":"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160427\/","title":{"rendered":"OceanBase \u6559\u7a0b\uff1aOceanBase \u5206\u6790\u51fd\u6578"},"content":{"rendered":"<h1 id=\"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8-vIeuslxyWx\">OceanBase \u6559\u7a0b\uff1aOceanBase \u5206\u6790\u51fd\u6578<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002OceanBase \u4f5c\u70ba\u4e00\u6b3e\u9ad8\u6027\u80fd\u7684\u5206\u4f48\u5f0f\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5176\u4e2d\u5206\u6790\u51fd\u6578\u662f\u5176\u4e00\u5927\u4eae\u9ede\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e OceanBase \u7684\u5206\u6790\u51fd\u6578\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u7528\u6cd5\u53ca\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8%ef%bc%9f-vIeuslxyWx\">\u4ec0\u9ebc\u662f\u5206\u6790\u51fd\u6578\uff1f<\/h2>\n<p>\u5206\u6790\u51fd\u6578\uff08Analytic Functions\uff09\u662f\u4e00\u985e\u7279\u6b8a\u7684 SQL \u51fd\u6578\uff0c\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\u9032\u884c\u8a08\u7b97\uff0c\u4e26\u4e14\u9019\u4e9b\u8a08\u7b97\u53ef\u4ee5\u57fa\u65bc\u67e5\u8a62\u7d50\u679c\u7684\u67d0\u4e9b\u5206\u7d44\u6216\u6392\u5e8f\u3002\u8207\u805a\u5408\u51fd\u6578\u4e0d\u540c\uff0c\u5206\u6790\u51fd\u6578\u4e0d\u6703\u5c07\u591a\u884c\u6578\u64da\u5408\u4f75\u70ba\u4e00\u884c\uff0c\u800c\u662f\u4fdd\u7559\u6240\u6709\u884c\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u540c\u6642\u63d0\u4f9b\u984d\u5916\u7684\u8a08\u7b97\u7d50\u679c\u3002<\/p>\n<h2 id=\"oceanbase-%e4%b8%ad%e7%9a%84%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8-vIeuslxyWx\">OceanBase \u4e2d\u7684\u5206\u6790\u51fd\u6578<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c\u5206\u6790\u51fd\u6578\u7684\u4f7f\u7528\u975e\u5e38\u9748\u6d3b\uff0c\u652f\u6301\u591a\u7a2e\u5e38\u898b\u7684\u5206\u6790\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u5206\u6790\u51fd\u6578\uff1a<\/p>\n<ul>\n<li><code>ROW_NUMBER()<\/code>\uff1a\u70ba\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u552f\u4e00\u7684\u5e8f\u865f\u3002<\/li>\n<li><code>RANK()<\/code>\uff1a\u70ba\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u4e00\u500b\u6392\u540d\uff0c\u4e26\u4e14\u76f8\u540c\u7684\u503c\u6703\u7372\u5f97\u76f8\u540c\u7684\u6392\u540d\u3002<\/li>\n<li><code>DENSE_RANK()<\/code>\uff1a\u985e\u4f3c\u65bc RANK\uff0c\u4f46\u4e0d\u6703\u5728\u6392\u540d\u4e2d\u7559\u7a7a\u3002<\/li>\n<li><code>NTILE(n)<\/code>\uff1a\u5c07\u67e5\u8a62\u7d50\u679c\u5206\u6210 n \u500b\u76f8\u7b49\u7684\u90e8\u5206\uff0c\u4e26\u70ba\u6bcf\u4e00\u90e8\u5206\u5206\u914d\u4e00\u500b\u6574\u6578\u6a19\u8b58\u3002<\/li>\n<li><code>SUM()<\/code>\u3001<code>AVG()<\/code>\u3001<code>COUNT()<\/code> \u7b49\u805a\u5408\u51fd\u6578\u4e5f\u53ef\u4ee5\u4f5c\u70ba\u5206\u6790\u51fd\u6578\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8%e7%9a%84%e8%aa%9e%e6%b3%95-vIeuslxyWx\">\u5206\u6790\u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n<p>\u5206\u6790\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\n\u5206\u6790\u51fd\u6578\u540d(\u5217\u540d) OVER (\n    [PARTITION BY \u5217\u540d1, \u5217\u540d2, ...]\n    [ORDER BY \u5217\u540d3, \u5217\u540d4, ...]\n)\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>PARTITION BY<\/code> \u5b50\u53e5\u7528\u65bc\u5c07\u6578\u64da\u5206\u7d44\uff0c\u800c <code>ORDER BY<\/code> \u5b50\u53e5\u5247\u7528\u65bc\u6307\u5b9a\u6392\u5e8f\u65b9\u5f0f\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u6bcf\u500b\u5206\u7d44\u5167\u9032\u884c\u8a08\u7b97\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e7%af%84%e4%be%8b-vIeuslxyWx\">\u5be6\u969b\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 OceanBase \u5206\u6790\u51fd\u6578\u7684\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>sales<\/code> \u7684\u8868\uff0c\u5305\u542b <code>salesperson<\/code>\uff08\u92b7\u552e\u4eba\u54e1\uff09\u3001<code>amount<\/code>\uff08\u92b7\u552e\u91d1\u984d\uff09\u548c <code>sale_date<\/code>\uff08\u92b7\u552e\u65e5\u671f\uff09\u7b49\u5b57\u6bb5\u3002<\/p>\n<pre><code>\nSELECT \n    salesperson,\n    amount,\n    SUM(amount) OVER (PARTITION BY salesperson ORDER BY sale_date) AS running_total\nFROM \n    sales\nORDER BY \n    salesperson, sale_date;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u8a08\u7b97\u4e86\u6bcf\u4f4d\u92b7\u552e\u4eba\u54e1\u7684\u7d2f\u8a08\u92b7\u552e\u91d1\u984d\u3002<code>SUM(amount) OVER (PARTITION BY salesperson ORDER BY sale_date)<\/code> \u5c07\u6839\u64da\u92b7\u552e\u4eba\u54e1\u9032\u884c\u5206\u7d44\uff0c\u4e26\u6309\u92b7\u552e\u65e5\u671f\u6392\u5e8f\uff0c\u5f9e\u800c\u8a08\u7b97\u51fa\u6bcf\u4f4d\u92b7\u552e\u4eba\u54e1\u7684\u7d2f\u8a08\u92b7\u552e\u91d1\u984d\u3002<\/p>\n<h2 id=\"%e5%88%86%e6%9e%90%e5%87%bd%e6%95%b8%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-vIeuslxyWx\">\u5206\u6790\u51fd\u6578\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u5206\u6790\u51fd\u6578\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u8ca1\u52d9\u5831\u8868\uff1a\u8a08\u7b97\u6bcf\u500b\u90e8\u9580\u7684\u7d2f\u8a08\u6536\u5165\u6216\u652f\u51fa\u3002<\/li>\n<li>\u92b7\u552e\u5206\u6790\uff1a\u5206\u6790\u6bcf\u4f4d\u92b7\u552e\u4eba\u54e1\u7684\u696d\u7e3e\u8da8\u52e2\u3002<\/li>\n<li>\u6578\u64da\u6316\u6398\uff1a\u5728\u5927\u6578\u64da\u74b0\u5883\u4e2d\u9032\u884c\u8907\u96dc\u7684\u6578\u64da\u5206\u6790\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vIeuslxyWx\">\u7e3d\u7d50<\/h2>\n<p>OceanBase \u7684\u5206\u6790\u51fd\u6578\u70ba\u7528\u6236\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u5206\u6790\u80fd\u529b\uff0c\u80fd\u5920\u5728\u4fdd\u6301\u6578\u64da\u8a73\u7d30\u6027\u7684\u540c\u6642\u9032\u884c\u9ad8\u6548\u7684\u8a08\u7b97\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u5f9e\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u50f9\u503c\u7684\u898b\u89e3\uff0c\u9032\u800c\u652f\u6301\u696d\u52d9\u6c7a\u7b56\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u9805\u76ee\u4e2d\u4f7f\u7528 OceanBase \u7684\u5206\u6790\u51fd\u6578\u6709\u8208\u8da3\uff0c\u6216\u662f\u9700\u8981\u66f4\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 OceanBase \u5206\u6790\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u638c\u63e1\u6570\u636e\u5206\u6790\u6280\u5de7\uff0c\u63d0\u5347\u6570\u636e\u5e93\u64cd\u4f5c\u6548\u7387\uff0c\u52a9\u529b\u4e1a\u52a1\u51b3\u7b56\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-160427","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160427","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=160427"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160427\/revisions"}],"predecessor-version":[{"id":160428,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160427\/revisions\/160428"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}