{"id":153041,"date":"2024-11-02T04:08:20","date_gmt":"2024-11-01T20:08:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153041\/"},"modified":"2024-11-02T04:08:21","modified_gmt":"2024-11-01T20:08:21","slug":"%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e4%bd%9c%e7%94%a8%e7%b0%a1%e4%bb%8b-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153041\/","title":{"rendered":"\u7a97\u53e3\u4e8b\u4ef6\u5728\u6578\u64da\u5eab\u4e2d\u7684\u4f5c\u7528\u7c21\u4ecb (\u6578\u64da\u5eab\u4e2d\u7a97\u53e3\u4e8b\u4ef6\u6709\u4ec0\u9ebc\u4f5c\u7528)"},"content":{"rendered":"<h1 id=\"%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e4%bd%9c%e7%94%a8%e7%b0%a1%e4%bb%8b-pCXFGnndGL\">\u7a97\u53e3\u4e8b\u4ef6\u5728\u6578\u64da\u5eab\u4e2d\u7684\u4f5c\u7528\u7c21\u4ecb<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7a97\u53e3\u4e8b\u4ef6\uff08Window Events\uff09\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u548c\u9032\u884c\u8907\u96dc\u67e5\u8a62\u6642\u3002\u7a97\u53e3\u4e8b\u4ef6\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u805a\u5408\u51fd\u6578\uff0c\u4e26\u4e14\u80fd\u5920\u5728\u4e0d\u9700\u8981\u5c07\u6578\u64da\u5206\u7d44\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u6578\u64da\u9032\u884c\u5206\u6790\u548c\u8a08\u7b97\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u7a97\u53e3\u4e8b\u4ef6\u5728\u6578\u64da\u5eab\u4e2d\u7684\u4f5c\u7528\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%ef%bc%9f-pCXFGnndGL\">\u4ec0\u9ebc\u662f\u7a97\u53e3\u4e8b\u4ef6\uff1f<\/h2>\n<p>\u7a97\u53e3\u4e8b\u4ef6\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u67e5\u8a62\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u7d50\u679c\u4e2d\u5b9a\u7fa9\u4e00\u500b\u201c\u7a97\u53e3\u201d\uff0c\u4ee5\u4fbf\u5728\u8a72\u7a97\u53e3\u5167\u9032\u884c\u8a08\u7b97\u3002\u9019\u4e9b\u8a08\u7b97\u53ef\u4ee5\u662f\u805a\u5408\u51fd\u6578\uff0c\u5982SUM\u3001AVG\u3001COUNT\u7b49\uff0c\u4e26\u4e14\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u7684\u6392\u5e8f\u548c\u5206\u5340\u9032\u884c\u64cd\u4f5c\u3002\u7a97\u53e3\u4e8b\u4ef6\u7684\u4e3b\u8981\u7279\u9ede\u662f\u5b83\u5011\u4e0d\u6703\u6539\u8b8a\u67e5\u8a62\u7684\u884c\u6578\uff0c\u800c\u662f\u70ba\u6bcf\u4e00\u884c\u63d0\u4f9b\u984d\u5916\u7684\u8a08\u7b97\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-pCXFGnndGL\">\u7a97\u53e3\u4e8b\u4ef6\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u7a97\u53e3\u4e8b\u4ef6\u7684\u57fa\u672c\u8a9e\u6cd5\u901a\u5e38\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>SELECT column1, column2, \n       AGGREGATE_FUNCTION(column) OVER (PARTITION BY column ORDER BY column) AS alias_name\nFROM table_name;\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>AGGREGATE_FUNCTION<\/code>\u53ef\u4ee5\u662f\u4efb\u4f55\u805a\u5408\u51fd\u6578\uff0c\u800c<code>PARTITION BY<\/code>\u548c<code>ORDER BY<\/code>\u5247\u7528\u65bc\u5b9a\u7fa9\u7a97\u53e3\u7684\u7bc4\u570d\u548c\u6392\u5e8f\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-pCXFGnndGL\">\u7a97\u53e3\u4e8b\u4ef6\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<ul>\n<li><strong>\u7d2f\u7a4d\u8a08\u7b97\uff1a<\/strong>\u7a97\u53e3\u4e8b\u4ef6\u53ef\u4ee5\u7528\u65bc\u8a08\u7b97\u7d2f\u7a4d\u7e3d\u548c\uff0c\u4f8b\u5982\u5728\u8ca1\u52d9\u5831\u8868\u4e2d\uff0c\u8a08\u7b97\u6bcf\u500b\u6708\u7684\u7d2f\u7a4d\u6536\u5165\u3002<\/li>\n<li><strong>\u6392\u540d\u8a08\u7b97\uff1a<\/strong>\u4f7f\u7528\u7a97\u53e3\u51fd\u6578\u53ef\u4ee5\u8f15\u9b06\u5730\u70ba\u6578\u64da\u96c6\u4e2d\u7684\u6bcf\u4e00\u884c\u5206\u914d\u6392\u540d\uff0c\u9019\u5728\u92b7\u552e\u6578\u64da\u5206\u6790\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/li>\n<li><strong>\u79fb\u52d5\u5e73\u5747\uff1a<\/strong>\u7a97\u53e3\u4e8b\u4ef6\u53ef\u4ee5\u7528\u65bc\u8a08\u7b97\u79fb\u52d5\u5e73\u5747\u503c\uff0c\u9019\u5728\u6642\u9593\u5e8f\u5217\u6578\u64da\u5206\u6790\u4e2d\u662f\u5e38\u898b\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e8%a8%88%e7%ae%97%e7%b4%af%e7%a9%8d%e7%b8%bd%e5%92%8c-pCXFGnndGL\">\u793a\u4f8b\uff1a\u4f7f\u7528\u7a97\u53e3\u4e8b\u4ef6\u8a08\u7b97\u7d2f\u7a4d\u7e3d\u548c<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u7a97\u53e3\u4e8b\u4ef6\u8a08\u7b97\u7d2f\u7a4d\u7e3d\u548c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT order_date, \n       amount, \n       SUM(amount) OVER (ORDER BY order_date) AS cumulative_amount\nFROM orders;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>SUM(amount) OVER (ORDER BY order_date)<\/code>\u5c07\u8a08\u7b97\u6bcf\u500b\u8a02\u55ae\u65e5\u671f\u7684\u7d2f\u7a4d\u91d1\u984d\uff0c\u4e26\u4e14\u4e0d\u6703\u6539\u8b8a\u539f\u59cb\u6578\u64da\u7684\u884c\u6578\u3002<\/p>\n<h2 id=\"%e7%aa%97%e5%8f%a3%e4%ba%8b%e4%bb%b6%e7%9a%84%e5%84%aa%e5%8b%a2-pCXFGnndGL\">\u7a97\u53e3\u4e8b\u4ef6\u7684\u512a\u52e2<\/h2>\n<p>\u7a97\u53e3\u4e8b\u4ef6\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u9748\u6d3b\u6027\u548c\u9ad8\u6548\u6027\u3002\u8207\u50b3\u7d71\u7684\u5206\u7d44\u67e5\u8a62\u76f8\u6bd4\uff0c\u7a97\u53e3\u4e8b\u4ef6\u80fd\u5920\u63d0\u4f9b\u66f4\u8c50\u5bcc\u7684\u6578\u64da\u5206\u6790\u529f\u80fd\uff0c\u800c\u4e0d\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u5206\u7d44\uff0c\u9019\u6a23\u53ef\u4ee5\u4fdd\u7559\u66f4\u591a\u7684\u539f\u59cb\u6578\u64da\u884c\u3002\u6b64\u5916\uff0c\u7a97\u53e3\u4e8b\u4ef6\u901a\u5e38\u5728\u6027\u80fd\u4e0a\u4e5f\u512a\u65bc\u591a\u6b21\u67e5\u8a62\uff0c\u56e0\u70ba\u5b83\u5011\u53ef\u4ee5\u5728\u55ae\u4e00\u67e5\u8a62\u4e2d\u5b8c\u6210\u591a\u500b\u8a08\u7b97\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-pCXFGnndGL\">\u7d50\u8ad6<\/h2>\n<p>\u7a97\u53e3\u4e8b\u4ef6\u5728\u6578\u64da\u5eab\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u9032\u884c\u8907\u96dc\u6578\u64da\u5206\u6790\u7684\u60c5\u6cc1\u4e0b\u3002\u901a\u904e\u4f7f\u7528\u7a97\u53e3\u4e8b\u4ef6\uff0c\u6578\u64da\u5206\u6790\u5e2b\u548c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u8655\u7406\u6578\u64da\uff0c\u4e26\u7372\u5f97\u66f4\u6df1\u5165\u7684\u898b\u89e3\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\u548c\u5206\u6790\u9700\u6c42\u7684\u589e\u52a0\uff0c\u7a97\u53e3\u4e8b\u4ef6\u7684\u61c9\u7528\u5c07\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u9805\u76ee\u4e2d\u4f7f\u7528\u7a97\u53e3\u4e8b\u4ef6\u6709\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u6578\u64da\u5eab\u7684\u6700\u4f73\u5be6\u8e10\uff0c\u8acb\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u6578\u64da\u8655\u7406\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u90fd\u80fd\u70ba\u60a8\u7684\u696d\u52d9\u5e36\u4f86\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7a97\u53e3\u4e8b\u4ef6\u5728\u6578\u64da\u5eab\u4e2d\u626e\u6f14\u91cd\u8981\u89d2\u8272\uff0c\u5e6b\u52a9\u7ba1\u7406\u6578\u64da\u6d41\u3001\u63d0\u9ad8\u6027\u80fd\u4e26\u512a\u5316\u7528\u6236\u4ea4\u4e92\u9ad4\u9a57\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-153041","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153041","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=153041"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153041\/revisions"}],"predecessor-version":[{"id":153042,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153041\/revisions\/153042"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}