{"id":96132,"date":"2024-10-20T06:52:16","date_gmt":"2024-10-19T22:52:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96132\/"},"modified":"2024-10-20T06:52:17","modified_gmt":"2024-10-19T22:52:17","slug":"oracle%e5%b0%8f%e6%95%b8%e9%bb%9e%e7%9a%84%e5%af%a6%e9%9a%9b%e4%bf%9d%e7%95%99%e5%95%8f%e9%a1%8c%e7%9a%844%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96132\/","title":{"rendered":"Oracle\u5c0f\u6578\u9ede\u7684\u5be6\u969b\u4fdd\u7559\u554f\u984c\u76844\u65b9\u6848"},"content":{"rendered":"

Oracle\u5c0f\u6578\u9ede\u7684\u5be6\u969b\u4fdd\u7559\u554f\u984c\u76844\u65b9\u6848<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u5b57\u7684\u7cbe\u78ba\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u91d1\u878d\u548c\u79d1\u5b78\u8a08\u7b97\u7b49\u9818\u57df\u3002Oracle\u6578\u64da\u5eab\u5728\u8655\u7406\u5c0f\u6578\u9ede\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u5be6\u969b\u4fdd\u7559\u554f\u984c\u3002\u9019\u4e9b\u554f\u984c\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u6e96\u78ba\uff0c\u5f71\u97ff\u696d\u52d9\u6c7a\u7b56\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u5c0f\u6578\u9ede\u7684\u5be6\u969b\u4fdd\u7559\u554f\u984c\u53ca\u5176\u56db\u7a2e\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

1. \u7406\u89e3\u5c0f\u6578\u9ede\u7684\u5be6\u969b\u4fdd\u7559\u554f\u984c<\/h2>\n

\u5728Oracle\u4e2d\uff0c\u5c0f\u6578\u9ede\u6578\u64da\u985e\u578b\u4e3b\u8981\u6709\u5169\u7a2e\uff1aNUMBER<\/code>\u548cFLOAT<\/code>\u3002\u9019\u4e9b\u6578\u64da\u985e\u578b\u5728\u5b58\u5132\u548c\u8a08\u7b97\u6642\u53ef\u80fd\u6703\u51fa\u73fe\u7cbe\u5ea6\u640d\u5931\u7684\u60c5\u6cc1\u3002\u9019\u662f\u56e0\u70ba\u8a08\u7b97\u6a5f\u5728\u8655\u7406\u6d6e\u9ede\u6578\u6642\uff0c\u53ef\u80fd\u7121\u6cd5\u7cbe\u78ba\u8868\u793a\u67d0\u4e9b\u5c0f\u6578\uff0c\u5f9e\u800c\u5c0e\u81f4\u56db\u6368\u4e94\u5165\u8aa4\u5dee\u3002<\/p>\n

2. \u4f7f\u7528\u9069\u7576\u7684\u6578\u64da\u985e\u578b<\/h2>\n

\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u662f\u89e3\u6c7a\u5c0f\u6578\u9ede\u4fdd\u7559\u554f\u984c\u7684\u7b2c\u4e00\u6b65\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u8a08\u7b97\uff0c\u5efa\u8b70\u4f7f\u7528NUMBER(p,s)<\/code>\u985e\u578b\uff0c\u5176\u4e2d<\/p>\n

\u8868\u793a\u7e3d\u4f4d\u6578\uff0c\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002\u4f8b\u5982\uff1a<\/p>\n

CREATE TABLE financial_data (\n    id NUMBER,\n    amount NUMBER(10, 2) -- 10\u4f4d\u6578\u5b57\uff0c\u5176\u4e2d2\u4f4d\u70ba\u5c0f\u6578\n);\n<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u5b58\u5132\u91d1\u984d\u6642\uff0c\u59cb\u7d42\u4fdd\u7559\u5169\u4f4d\u5c0f\u6578\uff0c\u907f\u514d\u56e0\u70ba\u6d6e\u9ede\u6578\u7684\u7cbe\u5ea6\u554f\u984c\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/p>\n
3. \u4f7f\u7528\u56db\u6368\u4e94\u5165\u51fd\u6578<\/h2>\n
\u5728\u9032\u884c\u8a08\u7b97\u6642\uff0c\u4f7f\u7528Oracle\u63d0\u4f9b\u7684\u56db\u6368\u4e94\u5165\u51fd\u6578\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u7cbe\u5ea6\u640d\u5931\u3002ROUND<\/code>\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u63a7\u5236\u5c0f\u6578\u9ede\u7684\u4f4d\u6578\u3002\u4f8b\u5982\uff1a<\/p>\n
SELECT ROUND(amount, 2) AS rounded_amount\nFROM financial_data;\n<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u91d1\u984d\u59cb\u7d42\u4fdd\u7559\u5169\u4f4d\u5c0f\u6578\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u6e96\u78ba\u6027\u3002<\/p>\n
4. \u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u6578\u64da<\/h2>\n
\u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u6578\u64da\u662f\u4fdd\u6301\u6578\u64da\u6e96\u78ba\u6027\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u53ef\u4ee5\u4f7f\u7528DBMS_STATS<\/code>\u5305\u4f86\u6536\u96c6\u7d71\u8a08\u4fe1\u606f\uff0c\u5e6b\u52a9\u8b58\u5225\u6578\u64da\u4e2d\u7684\u7570\u5e38\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n
EXEC DBMS_STATS.GATHER_TABLE_STATS('your_schema', 'financial_data');\n<\/code><\/pre>\n
\u901a\u904e\u9019\u4e9b\u7d71\u8a08\u4fe1\u606f\uff0c\u53ef\u4ee5\u767c\u73fe\u4e26\u4fee\u6b63\u6578\u64da\u4e2d\u7684\u4e0d\u4e00\u81f4\u6027\uff0c\u5f9e\u800c\u6e1b\u5c11\u5c0f\u6578\u9ede\u4fdd\u7559\u554f\u984c\u7684\u5f71\u97ff\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
Oracle\u5c0f\u6578\u9ede\u7684\u5be6\u969b\u4fdd\u7559\u554f\u984c\u53ef\u80fd\u6703\u5c0d\u6578\u64da\u7684\u6e96\u78ba\u6027\u9020\u6210\u5f71\u97ff\uff0c\u4f46\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3001\u4f7f\u7528\u56db\u6368\u4e94\u5165\u51fd\u6578\u4ee5\u53ca\u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u6578\u64da\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u6e96\u78ba\u6027\uff0c\u9084\u80fd\u589e\u5f37\u696d\u52d9\u6c7a\u7b56\u7684\u53ef\u9760\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u6280\u8853\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22Oracle\u5c0f\u6578\u9ede\u5be6\u969b\u4fdd\u7559\u554f\u984c\u7684\u56db\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u6e96\u78ba\u6027\u8207\u8a08\u7b97\u6548\u7387\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-96132","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96132","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=96132"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96132\/revisions"}],"predecessor-version":[{"id":96133,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96132\/revisions\/96133"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}