{"id":93804,"date":"2024-10-19T17:03:19","date_gmt":"2024-10-19T09:03:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/93804\/"},"modified":"2024-10-19T17:03:20","modified_gmt":"2024-10-19T09:03:20","slug":"oracle-11g-%e7%9a%84%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9a%e8%99%9b%e6%93%ac%e5%88%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/93804\/","title":{"rendered":"Oracle 11g \u7684\u65b0\u7279\u6027\uff1a\u865b\u64ec\u5217"},"content":{"rendered":"<h1 id=\"oracle-11g-%e7%9a%84%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9a%e8%99%9b%e6%93%ac%e5%88%97-tgnoVkqFkO\">Oracle 11g \u7684\u65b0\u7279\u6027\uff1a\u865b\u64ec\u5217<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cOracle 11g \u5f15\u5165\u4e86\u8a31\u591a\u65b0\u7279\u6027\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u865b\u64ec\u5217\uff08Virtual Columns\uff09\u3002\u865b\u64ec\u5217\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u5217\uff0c\u4e26\u4e0d\u76f4\u63a5\u5b58\u5132\u6578\u64da\uff0c\u800c\u662f\u6839\u64da\u5176\u4ed6\u5217\u7684\u6578\u64da\u52d5\u614b\u8a08\u7b97\u5f97\u51fa\u3002\u9019\u4e00\u7279\u6027\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u9748\u6d3b\u6027\uff0c\u9084\u80fd\u6709\u6548\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u3002<\/p>\n<h2 id=\"%e8%99%9b%e6%93%ac%e5%88%97%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-tgnoVkqFkO\">\u865b\u64ec\u5217\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u865b\u64ec\u5217\u7684\u5b9a\u7fa9\u662f\u57fa\u65bc\u8868\u4e2d\u5176\u4ed6\u5217\u7684\u8868\u9054\u5f0f\u3002\u7576\u67e5\u8a62\u865b\u64ec\u5217\u6642\uff0cOracle \u6703\u81ea\u52d5\u8a08\u7b97\u5176\u503c\uff0c\u800c\u4e0d\u9700\u8981\u5728\u7269\u7406\u4e0a\u5b58\u5132\u9019\u4e9b\u503c\u3002\u9019\u610f\u5473\u8457\u865b\u64ec\u5217\u53ef\u4ee5\u7528\u4f86\u7c21\u5316\u67e5\u8a62\uff0c\u4e26\u4e14\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u80fd\u5920\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h3 id=\"%e8%99%9b%e6%93%ac%e5%88%97%e7%9a%84%e5%89%b5%e5%bb%ba-tgnoVkqFkO\">\u865b\u64ec\u5217\u7684\u5275\u5efa<\/h3>\n<p>\u5728 Oracle 11g \u4e2d\uff0c\u865b\u64ec\u5217\u7684\u5275\u5efa\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u5275\u5efa\u8868\u6642\u5b9a\u7fa9\u865b\u64ec\u5217\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    employee_id NUMBER,\n    first_name VARCHAR2(50),\n    last_name VARCHAR2(50),\n    full_name AS (first_name || ' ' || last_name) VIRTUAL\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c`full_name` \u662f\u4e00\u500b\u865b\u64ec\u5217\uff0c\u5b83\u901a\u904e\u5c07 `first_name` \u548c `last_name` \u5169\u500b\u5217\u7684\u503c\u9023\u63a5\u8d77\u4f86\u4f86\u8a08\u7b97\u5176\u503c\u3002\u9019\u6a23\uff0c\u7576\u6211\u5011\u67e5\u8a62 `full_name` \u6642\uff0cOracle \u6703\u81ea\u52d5\u8a08\u7b97\u4e26\u8fd4\u56de\u7d50\u679c\uff0c\u800c\u4e0d\u9700\u8981\u984d\u5916\u7684\u5b58\u5132\u7a7a\u9593\u3002<\/p>\n<h3 id=\"%e8%99%9b%e6%93%ac%e5%88%97%e7%9a%84%e5%84%aa%e5%8b%a2-tgnoVkqFkO\">\u865b\u64ec\u5217\u7684\u512a\u52e2<\/h3>\n<ul>\n<li><strong>\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff1a<\/strong>\u7531\u65bc\u865b\u64ec\u5217\u4e0d\u6703\u5be6\u969b\u5b58\u5132\u6578\u64da\uff0c\u56e0\u6b64\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u5b58\u5132\u9700\u6c42\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u9748\u6d3b\u6027\uff1a<\/strong>\u865b\u64ec\u5217\u53ef\u4ee5\u6839\u64da\u9700\u8981\u52d5\u614b\u8a08\u7b97\uff0c\u9019\u4f7f\u5f97\u67e5\u8a62\u66f4\u52a0\u9748\u6d3b\uff0c\u80fd\u5920\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/li>\n<li><strong>\u7c21\u5316\u6578\u64da\u64cd\u4f5c\uff1a<\/strong>\u4f7f\u7528\u865b\u64ec\u5217\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u64cd\u4f5c\uff0c\u6e1b\u5c11\u4e86\u9700\u8981\u624b\u52d5\u8a08\u7b97\u7684\u5de5\u4f5c\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%99%9b%e6%93%ac%e5%88%97%e7%9a%84%e4%bd%bf%e7%94%a8%e5%a0%b4%e6%99%af-tgnoVkqFkO\">\u865b\u64ec\u5217\u7684\u4f7f\u7528\u5834\u666f<\/h2>\n<p>\u865b\u64ec\u5217\u7684\u61c9\u7528\u5834\u666f\u975e\u5e38\u5ee3\u6cdb\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u8a08\u7b97\u884d\u751f\u6578\u64da\uff1a<\/strong>\u4f8b\u5982\uff0c\u6839\u64da\u92b7\u552e\u6578\u64da\u8a08\u7b97\u7e3d\u6536\u5165\u6216\u5229\u6f64\u3002<\/li>\n<li><strong>\u683c\u5f0f\u5316\u6578\u64da\uff1a<\/strong>\u4f8b\u5982\uff0c\u5c07\u65e5\u671f\u683c\u5f0f\u5316\u70ba\u7279\u5b9a\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002<\/li>\n<li><strong>\u6578\u64da\u904e\u6ffe\uff1a<\/strong>\u6839\u64da\u865b\u64ec\u5217\u7684\u503c\u9032\u884c\u67e5\u8a62\u548c\u904e\u6ffe\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h3 id=\"%e8%99%9b%e6%93%ac%e5%88%97%e7%9a%84%e9%99%90%e5%88%b6-tgnoVkqFkO\">\u865b\u64ec\u5217\u7684\u9650\u5236<\/h3>\n<p>\u5118\u7ba1\u865b\u64ec\u5217\u6709\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u9650\u5236\uff1a<\/p>\n<ul>\n<li>\u865b\u64ec\u5217\u4e0d\u80fd\u7528\u65bc\u7d22\u5f15\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\u3002<\/li>\n<li>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u865b\u64ec\u5217\u7684\u8a08\u7b97\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u7576\u8a08\u7b97\u904e\u65bc\u8907\u96dc\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tgnoVkqFkO\">\u7e3d\u7d50<\/h2>\n<p>Oracle 11g \u7684\u865b\u64ec\u5217\u7279\u6027\u70ba\u6578\u64da\u5eab\u7ba1\u7406\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002\u901a\u904e\u52d5\u614b\u8a08\u7b97\u800c\u975e\u5b58\u5132\u6578\u64da\uff0c\u865b\u64ec\u5217\u4e0d\u50c5\u7bc0\u7701\u4e86\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u7c21\u5316\u4e86\u6578\u64da\u64cd\u4f5c\u3002\u5c0d\u65bc\u9700\u8981\u7d93\u5e38\u9032\u884c\u8a08\u7b97\u6216\u683c\u5f0f\u5316\u7684\u6578\u64da\uff0c\u865b\u64ec\u5217\u7121\u7591\u662f\u4e00\u500b\u7406\u60f3\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4e0a\u4f7f\u7528 Oracle 11g \u7684\u865b\u64ec\u5217\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle 11g\u7684\u865b\u64ec\u5217\u65b0\u7279\u6027\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u9748\u6d3b\u6027\uff0c\u7c21\u5316\u67e5\u8a62\u548c\u6578\u64da\u7ba1\u7406\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-93804","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93804","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=93804"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93804\/revisions"}],"predecessor-version":[{"id":93805,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93804\/revisions\/93805"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=93804"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=93804"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=93804"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}