{"id":199795,"date":"2025-05-06T08:20:27","date_gmt":"2025-05-06T00:20:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199795\/"},"modified":"2025-05-06T08:20:27","modified_gmt":"2025-05-06T00:20:27","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e8%ae%a8oracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e7%9a%84%e4%b9%98%e6%b3%95%e8%bf%90%e7%ae%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199795\/","title":{"rendered":"\u6df1\u5165\u63a2\u8ba8Oracle\u6570\u636e\u5e93\u4e2d\u7684\u4e58\u6cd5\u8fd0\u7b97"},"content":{"rendered":"

<\/b> <\/p>\n

\u6df1\u5165\u63a2\u8ba8Oracle\u6570\u636e\u5e93\u4e2d\u7684\u4e58\u6cd5\u8fd0\u7b97<\/h1>\n

\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6570\u636e\u5e93\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300a\u6df1\u5165\u63a2\u8ba8Oracle\u6570\u636e\u5e93\u4e2d\u7684\u4e58\u6cd5\u8fd0\u7b97\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

Oracle\u6570\u636e\u5e93\u4f5c\u4e3a\u4e1a\u754c\u9886\u5148\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5177\u6709\u5f3a\u5927\u7684\u529f\u80fd\u548c\u7075\u6d3b\u7684\u5e94\u7528\uff0c\u80fd\u591f\u652f\u6301\u5404\u79cd\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u9700\u6c42\u3002\u5728\u6570\u636e\u5e93\u5e94\u7528\u4e2d\uff0c\u5e38\u5e38\u9700\u8981\u8fdb\u884c\u5404\u79cd\u6570\u503c\u8fd0\u7b97\uff0c\u5982\u52a0\u51cf\u4e58\u9664\u7b49\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecdOracle\u6570\u636e\u5e93\u4e2d\u4e58\u6cd5\u8fd0\u7b97\u7684\u5b9e\u4f8b\u5206\u6790\uff0c\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u5728Oracle\u4e2d\u8fdb\u884c\u4e58\u6cd5\u8fd0\u7b97\uff0c\u5e76\u5c55\u793a\u5176\u9ad8\u7ea7\u5e94\u7528\u3002\u8bfb\u8005\u53ef\u4ee5\u901a\u8fc7\u672c\u6587\u7684\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u8fdb\u4e00\u6b65\u638c\u63e1Oracle\u6570\u636e\u5e93\u7684\u5e94\u7528\u6280\u5de7\uff0c\u63d0\u5347\u81ea\u5df1\u5728\u6570\u636e\u5e93\u9886\u57df\u7684\u6280\u672f\u6c34\u5e73\u3002<\/p>\n

1. \u521b\u5efa\u6d4b\u8bd5\u8868<\/h3>\n

\u4e3a\u4e86\u6f14\u793a\u4e58\u6cd5\u8fd0\u7b97\u7684\u5b9e\u4f8b\u5206\u6790\uff0c\u9996\u5148\u9700\u8981\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u4e00\u4e2a\u6d4b\u8bd5\u8868\uff0c\u7528\u4e8e\u5b58\u653e\u6d4b\u8bd5\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u6d4b\u8bd5\u8868\u7684SQL\u8bed\u53e5\uff1a<\/p>\n

CREATE TABLE test_table (\n    id NUMBER,\n    num1 NUMBER,\n    num2 NUMBER\n);\n\nINSERT INTO test_table VALUES (1, 10, 5);\nINSERT INTO test_table VALUES (2, 15, 3);\nINSERT INTO test_table VALUES (3, 20, 4);<\/pre>\n
2. \u4f7f\u7528\u4e58\u6cd5\u8fd0\u7b97\u7b26\u8fdb\u884c\u8ba1\u7b97<\/h3>\n
\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u4e58\u6cd5\u8fd0\u7b97\u53ef\u4ee5\u4f7f\u7528\u4e58\u6cd5\u8fd0\u7b97\u7b26*<\/code>\u6765\u5b9e\u73b0\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528\u4e58\u6cd5\u8fd0\u7b97\u7b26\u8ba1\u7b97\u4e24\u4e2a\u5b57\u6bb5\u7684\u4e58\u79ef\uff0c\u5e76\u5c06\u7ed3\u679c\u4fdd\u5b58\u5728\u65b0\u7684\u5b57\u6bb5\u4e2d\uff1a<\/p>\n
SELECT id, num1, num2, num1 * num2 AS product\nFROM test_table;<\/pre>\n
\u901a\u8fc7\u4e0a\u8ff0SQL\u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n
| id | num1 | num2 | product |\n|----|------|------|---------|\n| 1  | 10   | 5    | 50      |\n| 2  | 15   | 3    | 45      |\n| 3  | 20   | 4    | 80      |<\/pre>\n
3. \u6c42\u4e58\u6cd5\u8fd0\u7b97\u7684\u7d2f\u79ef\u503c<\/h3>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6709\u65f6\u9700\u8981\u5bf9\u591a\u4e2a\u6570\u8fdb\u884c\u4e58\u6cd5\u8fd0\u7b97\uff0c\u5e76\u6c42\u5f97\u5b83\u4eec\u7684\u7d2f\u79ef\u503c\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u901a\u8fc7\u4f7f\u7528Oracle\u7684SYS_CONNECT_BY_PATH<\/code>\u51fd\u6570\u548cCONNECT BY<\/code>\u5b50\u53e5\uff0c\u5b9e\u73b0\u5bf9\u591a\u4e2a\u6570\u5b57\u5b57\u6bb5\u7684\u4e58\u6cd5\u8fd0\u7b97\u5e76\u6c42\u7d2f\u79ef\u503c\uff1a<\/p>\n
SELECT id, num1, num2, product, \n    ROUND(EXP(SUM(LN(num1 * num2)) OVER (ORDER BY id)), 2) AS cumulative_product\nFROM (\n    SELECT id, num1, num2, num1 * num2 AS product\n    FROM test_table\n);<\/pre>\n
\u901a\u8fc7\u4e0a\u8ff0SQL\u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n
| id | num1 | num2 | product | cumulative_product |\n|----|------|------|---------|---------------------|\n| 1  | 10   | 5    | 50      | 50                 |\n| 2  | 15   | 3    | 45      | 2250               |\n| 3  | 20   | 4    | 80      | 180000             |<\/pre>\n
4. \u603b\u7ed3<\/h3>\n
\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\u548c\u5b9e\u4f8b\u5206\u6790\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5728Oracle\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u8fdb\u884c\u4e58\u6cd5\u8fd0\u7b97\uff0c\u5e76\u5c55\u793a\u4e86\u4e58\u6cd5\u8fd0\u7b97\u7684\u9ad8\u7ea7\u5e94\u7528\u3002\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u672c\u6587\u63d0\u4f9b\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7075\u6d3b\u8fd0\u7528\u4e58\u6cd5\u8fd0\u7b97\u7b26\uff0c\u5904\u7406\u5404\u79cd\u590d\u6742\u7684\u6570\u636e\u8ba1\u7b97\u9700\u6c42\u3002\u901a\u8fc7\u4e0d\u65ad\u7684\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u5728Oracle\u6570\u636e\u5e93\u5e94\u7528\u9886\u57df\u7684\u6280\u672f\u80fd\u529b\uff0c\u5b9e\u73b0\u66f4\u591a\u6709\u4ef7\u503c\u7684\u6570\u636e\u5904\u7406\u529f\u80fd\u3002<\/p>\n
\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u6df1\u5165\u63a2\u8ba8Oracle\u6570\u636e\u5e93\u4e2d\u7684\u4e58\u6cd5\u8fd0\u7b97\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6570\u636e\u5e93\u77e5\u8bc6\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u6df1\u5165\u63a2\u8ba8Oracle\u6570\u636e\u5e93\u4e2d\u7684\u4e58...<\/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-199795","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199795","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=199795"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199795\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199795"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199795"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}