{"id":133462,"date":"2023-07-22T17:26:05","date_gmt":"2023-07-22T09:26:05","guid":{"rendered":"http:\/\/www.idc.net\/help\/133462\/"},"modified":"2023-07-22T17:26:05","modified_gmt":"2023-07-22T09:26:05","slug":"sql%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e7%9a%84%e7%99%be%e5%88%86%e6%af%94%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95-sql%e6%95%b0%e6%8d%ae%e5%ba%93-%e7%99%be%e5%88%86%e6%af%94","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/133462\/","title":{"rendered":"SQL\u6570\u636e\u5e93\u4e2d\u7684\u767e\u5206\u6bd4\u8ba1\u7b97\u65b9\u6cd5 (sql\u6570\u636e\u5e93 \u767e\u5206\u6bd4)"},"content":{"rendered":"<p>\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u9886\u57df\u4e2d\uff0cSQL\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u7f16\u7a0b\u8bed\u8a00\u3002\u5728\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf(DMS)\u4e2d\uff0cSQL\u5e7f\u6cdb\u7528\u4e8e\u6570\u636e\u7684\u589e\u52a0\u3001\u4fee\u6539\u3001\u5220\u9664\u548c\u67e5\u8be2\u3002SQL\u7684\u4f7f\u7528\u5bf9\u4e8e\u6570\u636e\u7684\u5206\u6790\u548c\u7ba1\u7406\u975e\u5e38\u5173\u952e\uff0c\u5176\u4e2d\u4e00\u9879\u57fa\u672c\u529f\u80fd\u662f\u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\uff0c\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3SQL\u8bed\u8a00\u7684\u5e94\u7528\u3002<\/p>\n<p>\u4ec0\u4e48\u662f\u767e\u5206\u6bd4\u8ba1\u7b97\uff1f<\/p>\n<p>\u767e\u5206\u6bd4\u8ba1\u7b97\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u5b66\u65b9\u6cd5\uff0c\u7528\u4e8e\u8868\u793a\u67d0\u4e2a\u6570\u5b57\u6216\u4ef7\u503c\u4e0e\u53e6\u4e00\u4e2a\u6570\u5b57\u6216\u4ef7\u503c\u7684\u6bd4\u4f8b\u3002\u5728\u5b9e\u9645\u751f\u6d3b\u4e2d\uff0c\u767e\u5206\u6bd4\u8ba1\u7b97\u901a\u5e38\u7528\u4e8e\u8ba1\u7b97\u9500\u552e\u589e\u957f\u7387\u3001\u80a1\u7968\u4ef7\u683c\u53d8\u5316\u3001\u4eba\u53e3\u589e\u957f\u7387\u7b49\u3002\u5728SQL\u6570\u636e\u5e93\u4e2d\uff0c\u767e\u5206\u6bd4\u8ba1\u7b97\u901a\u5e38\u7528\u4e8e\u8ba1\u7b97\u67d0\u4e2a\u503c\u5728\u603b\u4f53\u4e2d\u7684\u6bd4\u4f8b\uff0c\u4f8b\u5982\u7edf\u8ba1\u67d0\u4e2a\u5546\u54c1\u5728\u9500\u552e\u603b\u989d\u4e2d\u7684\u5360\u6bd4\uff0c\u6216\u8ba1\u7b97\u67d0\u4e2a\u65f6\u95f4\u6bb5\u5185\u7684\u9500\u552e\u589e\u957f\u7387\u7b49\u3002<\/p>\n<p>\u767e\u5206\u6bd4\u8ba1\u7b97\u7684\u6570\u5b66\u516c\u5f0f\u662f\uff1a<\/p>\n<p>\u767e\u5206\u6bd4 = (\u6570\u503c \u00f7 \u603b\u503c) x 100%<\/p>\n<p>\u5176\u4e2d\uff0c\u6570\u503c\u662f\u5f85\u8ba1\u7b97\u7684\u503c\uff0c\u603b\u503c\u662f\u53c2\u8003\u7684\u603b\u4f53\u503c\uff0c\u767e\u5206\u6bd4\u662f\u6570\u503c\u5360\u603b\u503c\u7684\u767e\u5206\u6bd4\u3002<\/p>\n<p>\u5982\u4f55\u5728SQL\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97\uff1f<\/p>\n<p>SQL\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\uff1a\u8bfb\u53d6\u6574\u4e2a\u6570\u636e\u96c6\uff0c\u6216\u4ec5\u8bfb\u53d6\u6240\u9700\u67e5\u8be2\u7ed3\u679c\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u5206\u522b\u8ba8\u8bba\u8fd9\u4e24\u79cd\u65b9\u6cd5\u3002<\/p>\n<p>\u65b9\u6cd5\u4e00\uff1a\u8bfb\u53d6\u6574\u4e2a\u6570\u636e\u96c6<\/p>\n<p>\u5728SQL\u6570\u636e\u5e93\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u9996\u5148\u8bfb\u53d6\u6574\u4e2a\u6570\u636e\u96c6\uff0c\u7136\u540e\u8ba1\u7b97\u6240\u9700\u767e\u5206\u6bd4\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5305\u542b\u9500\u552e\u91d1\u989d\u548c\u9500\u552e\u65e5\u671f\u7684\u6570\u636e\u5e93\u8868\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8be2\uff1a<\/p>\n<p>SELECT SUM(sales) as total_sales FROM table_name<\/p>\n<p>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u9500\u552e\u603b\u989d\u7684\u6570\u636e\u96c6\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5b83\u7528\u4f5c\u53c2\u8003\u503c\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u8be2\u67d0\u4e2a\u5546\u54c1\u5728\u603b\u9500\u552e\u989d\u4e2d\u7684\u5360\u6bd4\uff0c\u4f8b\u5982\uff1a<\/p>\n<p>SELECT product_name, sales, sales\/total_sales*100 as percentage <\/p>\n<p>FROM table_name <\/p>\n<p>WHERE product_name = \u2018example_product\u2019<\/p>\n<p>\u5728\u8fd9\u4e2a\u67e5\u8be2\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u9009\u53d6\u4e86\u67d0\u4e2a\u5546\u54c1\u7684\u540d\u79f0\u548c\u9500\u552e\u989d\uff0c\u7136\u540e\u8ba1\u7b97\u4e86\u8be5\u5546\u54c1\u9500\u552e\u989d\u5728\u603b\u9500\u552e\u989d\u4e2d\u7684\u767e\u5206\u6bd4\u3002\u5728\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u9996\u5148\u8bfb\u53d6\u6574\u4e2a\u6570\u636e\u96c6\uff0c\u7136\u540e\u518d\u8fdb\u884c\u8ba1\u7b97\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5728\u6570\u636e\u91cf\u8f83\u5927\u65f6\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<p>\u65b9\u6cd5\u4e8c\uff1a\u4ec5\u8bfb\u53d6\u6240\u9700\u67e5\u8be2\u7ed3\u679c<\/p>\n<p>\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u5728SQL\u6570\u636e\u5e93\u4e2d\u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u4ec5\u67e5\u8be2\u6240\u9700\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5728\u67e5\u8be2\u4e2d\u8ba1\u7b97\u67d0\u4e2a\u5546\u54c1\u7684\u9500\u552e\u989d\u5728\u603b\u9500\u552e\u989d\u4e2d\u7684\u5360\u6bd4\uff0c\u4f8b\u5982\uff1a<\/p>\n<p>SELECT product_name, sales, sales\/(SELECT SUM(sales) FROM table_name)*100 as percentage <\/p>\n<p>FROM table_name <\/p>\n<p>WHERE product_name = \u2018example_product\u2019<\/p>\n<p>\u5728\u8fd9\u4e2a\u67e5\u8be2\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u9009\u53d6\u67d0\u4e2a\u5546\u54c1\u7684\u540d\u79f0\u548c\u9500\u552e\u989d\uff0c\u7136\u540e\u76f4\u63a5\u8ba1\u7b97\u8be5\u5546\u54c1\u9500\u552e\u989d\u5728\u603b\u9500\u552e\u989d\u4e2d\u7684\u767e\u5206\u6bd4\u3002\u7531\u4e8e\u6211\u4eec\u4ec5\u8bfb\u53d6\u4e86\u6240\u9700\u67e5\u8be2\u7ed3\u679c\uff0c\u56e0\u6b64\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u7684\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5927\u6570\u636e\u91cf\u7684\u73af\u5883\u4e2d\u3002<\/p>\n<p>\u5982\u4f55\u5728SQL\u4e2d\u5904\u7406\u767e\u5206\u6bd4\u7684\u5c0f\u6570\u4f4d\u6570\uff1f<\/p>\n<p>\u53e6\u4e00\u4e2a\u9700\u8981\u8003\u8651\u7684\u95ee\u9898\u662f\u5982\u4f55\u5728SQL\u6570\u636e\u5e93\u4e2d\u5904\u7406\u767e\u5206\u6bd4\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cSQL\u6570\u636e\u5e93\u901a\u5e38\u4f7f\u7528\u4e24\u4e2a\u5c0f\u6570\u4f4d\u6570\u6765\u8868\u793a\u767e\u5206\u6bd4\uff0c\u4f46\u6709\u65f6\u6211\u4eec\u9700\u8981\u66f4\u591a\u6216\u66f4\u5c11\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u5728SQL\u6570\u636e\u5e93\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528CAST\u6765\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u5e0c\u671b\u4ee5\u56db\u4e2a\u5c0f\u6570\u4f4d\u6570\u663e\u793a\u767e\u5206\u6bd4\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<p>SELECT product_name, sales, CAST(sales\/(SELECT SUM(sales) FROM table_name)*100 AS DECIMAL(5,4)) as percentage <\/p>\n<p>FROM table_name <\/p>\n<p>WHERE product_name = \u2018example_product\u2019<\/p>\n<p>\u5728\u8fd9\u4e2a\u67e5\u8be2\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528DECIMAL\u51fd\u6570\u6765\u6307\u5b9a\u767e\u5206\u6bd4\u7684\u5c0f\u6570\u4f4d\u6570\u4e3a4\uff0c\u8fd9\u5c06\u4f7f\u5f97\u7ed3\u679c\u4ee5\u56db\u4e2a\u5c0f\u6570\u4f4d\u6570\u7684\u65b9\u5f0f\u5448\u73b0\u3002\u5728\u8fd9\u79cd\u65b9\u5f0f\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u6ce8\u610f\u9009\u62e9\u6070\u5f53\u7684\u5c0f\u6570\u4f4d\u6570\u4ee5\u4fbf\u80fd\u591f\u6e05\u695a\u5730\u8868\u793a\u6240\u9700\u8981\u7684\u767e\u5206\u6570\u3002<\/p>\n<p>\u7ed3\u8bba<\/p>\n<p>\u5728SQL\u6570\u636e\u5e93\u4e2d\u4f7f\u7528\u767e\u5206\u6bd4\u8ba1\u7b97\u662f\u8fdb\u884c\u6570\u636e\u5206\u6790\u548c\u7ba1\u7406\u7684\u91cd\u8981\u65b9\u6cd5\u4e4b\u4e00\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u63a2\u8ba8\u4e86\u4e24\u79cd\u65b9\u6cd5\u6765\u8fdb\u884c\u767e\u5206\u6bd4\u8ba1\u7b97\uff0c\u5305\u62ec\u8bfb\u53d6\u6574\u4e2a\u6570\u636e\u96c6\u548c\u4ec5\u8bfb\u53d6\u6240\u9700\u67e5\u8be2\u7ed3\u679c\u3002\u6211\u4eec\u8fd8\u8ba8\u8bba\u4e86\u5982\u4f55\u5728SQL\u4e2d\u5904\u7406\u767e\u5206\u6bd4\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u4f7f\u7528SQL\u8bed\u8a00\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5206\u6790\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002<\/p>\n<p><strong>\u76f8\u5173\u95ee\u9898\u62d3\u5c55\u9605\u8bfb\uff1a<\/strong><\/p>\n<ul>\n<li>sql\u4e2d\u5982\u4f55\u8ba1\u7b97\u767e\u5206\u6bd4 \u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570<\/li>\n<\/ul>\n<h3>sql\u4e2d\u5982\u4f55\u8ba1\u7b97\u767e\u5206\u6bd4 \u5e76\u4fdd\u7559\u4e24\u4f4d\u5c0f\u6570<\/h3>\n<p>select convert(decimal(18,2),\u9664\u78b0\u778e\u778e\u795e\u731b\u6570*1.0\/<\/p>\n<p>\u88ab\u9664\u6570<\/p>\n<p>)*100 as \u767e\u5206\u6bd4\u7b11\u7a7a from \u8868\u540d<\/p>\n<p>decimal(18,2)\u8868\u793a\u53d6\u4e24\u4f4d\u5c0f\u6570<\/p>\n<p>\u5173\u4e8esql\u6570\u636e\u5e93 \u767e\u5206\u6bd4\u7684\u4ecb\u7ecd\u5230\u6b64\u5c31\u7ed3\u675f\u4e86\uff0c\u4e0d\u77e5\u9053\u4f60\u4ece\u4e2d\u627e\u5230\u4f60\u9700\u8981\u7684\u4fe1\u606f\u4e86\u5417 \uff1f\u5982\u679c\u4f60\u8fd8\u60f3\u4e86\u89e3\u66f4\u591a\u8fd9\u65b9\u9762\u7684\u4fe1\u606f\uff0c\u8bb0\u5f97\u6536\u85cf\u5173\u6ce8\u672c\u7ad9\u3002<\/p>\n<p><a href=\"http:https:\/\/idc.net\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u9996\u9009\u540e\u6d6a\u4e91\uff0c2H2G\u9996\u670810\u5143\u5f00\u901a\u3002<br \/>\u540e\u6d6a\u4e91\uff08www.IDC.Net\uff09\u63d0\u4f9b\u7b80\u5355\u597d\u7528\uff0c\u4ef7\u683c\u539a\u9053\u7684\u9999\u6e2f\/\u7f8e\u56fd\u4e91\u670d\u52a1\u5668\u548c\u72ec\u7acb\u670d\u52a1\u5668\u3002IDC+ISP+ICP\u8d44\u8d28\u3002ARIN\u548cAPNIC\u4f1a\u5458\u3002\u6210\u719f\u6280\u672f\u56e2\u961f15\u5e74\u884c\u4e1a\u7ecf\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u9886\u57df\u4e2d\uff0cSQL\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u7f16\u7a0b\u8bed\u8a00\u3002\u5728\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf(DMS)\u4e2d\uff0cSQL\u5e7f\u6cdb\u7528\u4e8e\u6570 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7038],"tags":[],"class_list":["post-133462","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/133462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=133462"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/133462\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=133462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=133462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=133462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}