{"id":199986,"date":"2025-05-06T09:33:10","date_gmt":"2025-05-06T01:33:10","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199986\/"},"modified":"2025-05-06T09:33:10","modified_gmt":"2025-05-06T01:33:10","slug":"%e5%ba%94%e7%94%a8oracle-sql%e8%bf%9b%e8%a1%8c%e9%99%a4%e6%b3%95%e8%bf%90%e7%ae%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199986\/","title":{"rendered":"\u5e94\u7528Oracle SQL\u8fdb\u884c\u9664\u6cd5\u8fd0\u7b97"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5e94\u7528Oracle SQL\u8fdb\u884c\u9664\u6cd5\u8fd0\u7b97<\/h1>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0c\u4e3b\u673a\u5b9d\u8d1d\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300a\u5e94\u7528Oracle SQL\u8fdb\u884c\u9664\u6cd5\u8fd0\u7b97\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n<p>\u6807\u9898\uff1aOracle SQL\u4e2d\u9664\u6cd5\u8fd0\u7b97\u7684\u5b9e\u9645\u5e94\u7528<\/p>\n<p>Oracle SQL\u4e2d\u7684\u9664\u6cd5\u8fd0\u7b97\u5728\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u4e2d\u5177\u6709\u91cd\u8981\u7684\u4f5c\u7528\uff0c\u901a\u8fc7\u9664\u6cd5\u8fd0\u7b97\u53ef\u4ee5\u8ba1\u7b97\u6570\u636e\u4e4b\u95f4\u7684\u6bd4\u7387\u3001\u767e\u5206\u6bd4\u3001\u5e73\u5747\u503c\u7b49\u5404\u79cd\u6307\u6807\u3002\u672c\u6587\u5c06\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u4ecb\u7ecdOracle SQL\u4e2d\u9664\u6cd5\u8fd0\u7b97\u7684\u5b9e\u9645\u5e94\u7528\u3002<\/p>\n<p>\u5728Oracle SQL\u4e2d\uff0c\u9664\u6cd5\u8fd0\u7b97\u901a\u5e38\u4f7f\u7528\u9664\u53f7\uff08\/\uff09\u8fdb\u884c\u8868\u793a\uff0c\u53ef\u4ee5\u5bf9\u6570\u5b57\u5217\u8fdb\u884c\u7b80\u5355\u7684\u9664\u6cd5\u8ba1\u7b97\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u884c\u590d\u6742\u7684\u6bd4\u8f83\u8ba1\u7b97\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u901a\u8fc7\u51e0\u4e2a\u5177\u4f53\u7684\u793a\u4f8b\u5c55\u793aOracle SQL\u4e2d\u9664\u6cd5\u8fd0\u7b97\u7684\u5e94\u7528\u3002<\/p>\n<ol>\n<li>\u8ba1\u7b97\u767e\u5206\u6bd4\uff1a<\/li>\n<\/ol>\n<p>\u5728\u5f88\u591a\u6570\u636e\u5206\u6790\u573a\u666f\u4e0b\uff0c\u6211\u4eec\u9700\u8981\u8ba1\u7b97\u67d0\u4e2a\u503c\u5728\u603b\u503c\u4e2d\u6240\u5360\u7684\u6bd4\u4f8b\uff0c\u8fd9\u65f6\u53ef\u4ee5\u4f7f\u7528\u9664\u6cd5\u8fd0\u7b97\u6765\u8ba1\u7b97\u767e\u5206\u6bd4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT sales_amount \/ total_sales * 100 AS sales_percentage\nFROM sales_data;<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u5047\u8bbesales_amount\u4e3a\u9500\u552e\u989d\uff0ctotal_sales\u4e3a\u603b\u9500\u552e\u989d\uff0c\u901a\u8fc7\u9664\u6cd5\u8fd0\u7b97\u8ba1\u7b97\u4e86\u6bcf\u7b14\u9500\u552e\u989d\u5728\u603b\u9500\u552e\u989d\u4e2d\u6240\u5360\u7684\u767e\u5206\u6bd4\uff0c\u5e76\u5c06\u7ed3\u679c\u663e\u793a\u4e3asales_percentage\u3002<\/p>\n<ol>\n<li>\u8ba1\u7b97\u5e73\u5747\u503c\uff1a<\/li>\n<\/ol>\n<p>\u9664\u6cd5\u8fd0\u7b97\u8fd8\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5e73\u5747\u503c\uff0c\u4f8b\u5982\u8ba1\u7b97\u67d0\u5217\u6570\u636e\u7684\u5e73\u5747\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT SUM(salary) \/ COUNT(*) AS avg_salary\nFROM employee_data;<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7\u5c06\u85aa\u8d44\u6570\u636e\u6c42\u548c\u540e\u9664\u4ee5\u603b\u8bb0\u5f55\u6570\uff0c\u53ef\u4ee5\u5f97\u5230\u5458\u5de5\u7684\u5e73\u5747\u85aa\u8d44avg_salary\u3002<\/p>\n<ol>\n<li>\u8ba1\u7b97\u589e\u957f\u7387\uff1a<\/li>\n<\/ol>\n<p>\u9664\u6cd5\u8fd0\u7b97\u8fd8\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u6570\u636e\u7684\u589e\u957f\u7387\uff0c\u4f8b\u5982\u8ba1\u7b97\u67d0\u4e2a\u6708\u4efd\u7684\u9500\u552e\u989d\u4e0e\u4e0a\u4e2a\u6708\u4efd\u9500\u552e\u989d\u7684\u589e\u957f\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT (sales_this_month - sales_last_month) \/ sales_last_month * 100 AS growth_rate\nFROM monthly_sales_data;<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7\u5c06\u672c\u6708\u9500\u552e\u989d\u4e0e\u4e0a\u6708\u9500\u552e\u989d\u76f8\u51cf\u540e\u9664\u4ee5\u4e0a\u6708\u9500\u552e\u989d\uff0c\u518d\u4e58\u4ee5100\uff0c\u53ef\u4ee5\u5f97\u5230\u9500\u552e\u989d\u7684\u589e\u957f\u7387growth_rate\u3002<\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230Oracle SQL\u4e2d\u9664\u6cd5\u8fd0\u7b97\u7684\u5b9e\u9645\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\uff0c\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u6bd4\u7387\u3001\u767e\u5206\u6bd4\u3001\u5e73\u5747\u503c\u3001\u589e\u957f\u7387\u7b49\u5404\u79cd\u6307\u6807\u3002\u5728\u5b9e\u9645\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u5de5\u4f5c\u4e2d\uff0c\u719f\u7ec3\u638c\u63e1\u9664\u6cd5\u8fd0\u7b97\u7684\u4f7f\u7528\u5c06\u4f1a\u6781\u5927\u5730\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<p>\u603b\u7ed3\uff1a\u4ece\u4ee5\u4e0a\u4ee3\u7801\u793a\u4f8b\u53ef\u4ee5\u770b\u5230\uff0cOracle SQL\u4e2d\u7684\u9664\u6cd5\u8fd0\u7b97\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u7528\u4e8e\u5404\u79cd\u6570\u636e\u5206\u6790\u573a\u666f\u4e2d\u3002\u719f\u7ec3\u638c\u63e1\u9664\u6cd5\u8fd0\u7b97\u7684\u539f\u7406\u548c\u7528\u6cd5\u5c06\u6709\u52a9\u4e8e\u5904\u7406\u590d\u6742\u7684\u6570\u636e\u8ba1\u7b97\u9700\u6c42\uff0c\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5e94\u7528Oracle SQL\u8fdb\u884c\u9664\u6cd5\u8fd0\u7b97\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u6570\u636e\u7b5b\u9009,\u5206\u7ec4\u6c42\u5e73\u5747,\u8ba1\u7b97\u6bd4\u4f8b\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5e94\u7528Oracle SQL\u8fdb\u884c\u9664\u6cd5&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199986","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199986","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199986"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199986\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}