{"id":95916,"date":"2024-10-20T05:04:17","date_gmt":"2024-10-19T21:04:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95916\/"},"modified":"2024-10-20T05:04:18","modified_gmt":"2024-10-19T21:04:18","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%b8%b8%e6%a8%99%e7%9a%84%e9%a1%9e%e5%9e%8b%e5%8f%8a%e4%bd%bf%e7%94%a8%e5%af%a6%e4%be%8b%e5%85%a8%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95916\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u6e38\u6a19\u7684\u985e\u578b\u53ca\u4f7f\u7528\u5be6\u4f8b\u5168\u89e3"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e6%b8%b8%e6%a8%99%e7%9a%84%e9%a1%9e%e5%9e%8b%e5%8f%8a%e4%bd%bf%e7%94%a8%e5%af%a6%e4%be%8b%e5%85%a8%e8%a7%a3-QHkXnNjSLA\">Oracle\u6578\u64da\u5eab\u6e38\u6a19\u7684\u985e\u578b\u53ca\u4f7f\u7528\u5be6\u4f8b\u5168\u89e3<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u64cd\u4f5c\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u6578\u64da\u7d50\u69cb\u3002\u6e38\u6a19\u5141\u8a31\u7528\u6236\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u4e26\u4e14\u5728\u9032\u884c\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\u6642\u975e\u5e38\u6709\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u6578\u64da\u5eab\u6e38\u6a19\u7684\u985e\u578b\u53ca\u5176\u4f7f\u7528\u5be6\u4f8b\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-QHkXnNjSLA\">\u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e38\u6a19\u53ef\u4ee5\u88ab\u8996\u70ba\u4e00\u500b\u6307\u91dd\uff0c\u6307\u5411\u67e5\u8a62\u7d50\u679c\u96c6\u4e2d\u7684\u4e00\u884c\u6578\u64da\u3002\u7576\u57f7\u884c\u4e00\u500bSQL\u67e5\u8a62\u6642\uff0cOracle\u6703\u81ea\u52d5\u5275\u5efa\u4e00\u500b\u96b1\u5f0f\u6e38\u6a19\u4f86\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u7136\u800c\uff0c\u5c0d\u65bc\u9700\u8981\u9010\u884c\u8655\u7406\u7684\u60c5\u6cc1\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u986f\u5f0f\u6e38\u6a19\u4f86\u7372\u5f97\u66f4\u5927\u7684\u9748\u6d3b\u6027\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e9%a1%9e%e5%9e%8b-QHkXnNjSLA\">\u6e38\u6a19\u7684\u985e\u578b<\/h2>\n<h3 id=\"1-%e9%9a%b1%e5%bc%8f%e6%b8%b8%e6%a8%99-QHkXnNjSLA\">1. \u96b1\u5f0f\u6e38\u6a19<\/h3>\n<p>\u96b1\u5f0f\u6e38\u6a19\u662fOracle\u81ea\u52d5\u5275\u5efa\u7684\uff0c\u7576\u57f7\u884c\u4e00\u500bSQL\u8a9e\u53e5\u6642\uff0cOracle\u6703\u81ea\u52d5\u7ba1\u7406\u9019\u4e9b\u6e38\u6a19\u3002\u96b1\u5f0f\u6e38\u6a19\u4e0d\u9700\u8981\u986f\u5f0f\u8072\u660e\uff0c\u9069\u5408\u7c21\u55ae\u7684\u67e5\u8a62\u64cd\u4f5c\u3002<\/p>\n<pre><code>SELECT * FROM employees;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cOracle\u6703\u81ea\u52d5\u5275\u5efa\u4e00\u500b\u96b1\u5f0f\u6e38\u6a19\u4f86\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002<\/p>\n<h3 id=\"2-%e9%a1%af%e5%bc%8f%e6%b8%b8%e6%a8%99-QHkXnNjSLA\">2. \u986f\u5f0f\u6e38\u6a19<\/h3>\n<p>\u986f\u5f0f\u6e38\u6a19\u9700\u8981\u958b\u767c\u8005\u624b\u52d5\u8072\u660e\u548c\u7ba1\u7406\uff0c\u9069\u5408\u9700\u8981\u9010\u884c\u8655\u7406\u7684\u8907\u96dc\u67e5\u8a62\u3002\u986f\u5f0f\u6e38\u6a19\u7684\u4f7f\u7528\u904e\u7a0b\u5305\u62ec\u8072\u660e\u3001\u6253\u958b\u3001\u63d0\u53d6\u548c\u95dc\u9589\u6e38\u6a19\u3002<\/p>\n<h4 id=\"%e9%a1%af%e5%bc%8f%e6%b8%b8%e6%a8%99%e7%9a%84%e4%bd%bf%e7%94%a8%e6%ad%a5%e9%a9%9f-QHkXnNjSLA\">\u986f\u5f0f\u6e38\u6a19\u7684\u4f7f\u7528\u6b65\u9a5f<\/h4>\n<ul>\n<li><strong>\u8072\u660e\u6e38\u6a19\uff1a<\/strong>\u4f7f\u7528CURSOR\u8a9e\u53e5\u4f86\u8072\u660e\u6e38\u6a19\u3002<\/li>\n<li><strong>\u6253\u958b\u6e38\u6a19\uff1a<\/strong>\u4f7f\u7528OPEN\u8a9e\u53e5\u4f86\u6253\u958b\u6e38\u6a19\u3002<\/li>\n<li><strong>\u63d0\u53d6\u6578\u64da\uff1a<\/strong>\u4f7f\u7528FETCH\u8a9e\u53e5\u4f86\u63d0\u53d6\u6578\u64da\u3002<\/li>\n<li><strong>\u95dc\u9589\u6e38\u6a19\uff1a<\/strong>\u4f7f\u7528CLOSE\u8a9e\u53e5\u4f86\u95dc\u9589\u6e38\u6a19\u3002<\/li>\n<\/ul>\n<h4 id=\"%e9%a1%af%e5%bc%8f%e6%b8%b8%e6%a8%99%e7%9a%84%e7%a4%ba%e4%be%8b-QHkXnNjSLA\">\u986f\u5f0f\u6e38\u6a19\u7684\u793a\u4f8b<\/h4>\n<pre><code>DECLARE\n    CURSOR emp_cursor IS\n        SELECT employee_id, first_name, last_name FROM employees;\n    emp_record emp_cursor%ROWTYPE;\nBEGIN\n    OPEN emp_cursor;\n    LOOP\n        FETCH emp_cursor INTO emp_record;\n        EXIT WHEN emp_cursor%NOTFOUND;\n        DBMS_OUTPUT.PUT_LINE('ID: ' || emp_record.employee_id || ', Name: ' || emp_record.first_name || ' ' || emp_record.last_name);\n    END LOOP;\n    CLOSE emp_cursor;\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u8072\u660e\u4e86\u4e00\u500b\u540d\u70baemp_cursor\u7684\u6e38\u6a19\uff0c\u4e26\u4f7f\u7528LOOP\u7d50\u69cb\u9010\u884c\u63d0\u53d6\u6578\u64da\uff0c\u76f4\u5230\u6c92\u6709\u66f4\u591a\u6578\u64da\u53ef\u63d0\u53d6\u70ba\u6b62\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e7%9a%84%e5%84%aa%e7%bc%ba%e9%bb%9e-QHkXnNjSLA\">\u6e38\u6a19\u7684\u512a\u7f3a\u9ede<\/h2>\n<h3 id=\"%e5%84%aa%e9%bb%9e-QHkXnNjSLA\">\u512a\u9ede<\/h3>\n<ul>\n<li>\u80fd\u5920\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u9069\u5408\u8907\u96dc\u7684\u6578\u64da\u64cd\u4f5c\u3002<\/li>\n<li>\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u591a\u6b21\u63d0\u53d6\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-QHkXnNjSLA\">\u7f3a\u9ede<\/h3>\n<ul>\n<li>\u986f\u5f0f\u6e38\u6a19\u7684\u7ba1\u7406\u9700\u8981\u984d\u5916\u7684\u4ee3\u78bc\uff0c\u589e\u52a0\u4e86\u958b\u767c\u7684\u8907\u96dc\u6027\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QHkXnNjSLA\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u4e2d\u7684\u6e38\u6a19\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u96b1\u5f0f\u6e38\u6a19\u9069\u5408\u7c21\u55ae\u67e5\u8a62\uff0c\u800c\u986f\u5f0f\u6e38\u6a19\u5247\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u63a7\u5236\u529b\u3002\u4e86\u89e3\u6e38\u6a19\u7684\u985e\u578b\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\uff0c\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u6e38\u6a19\u7684\u985e\u578b\u53ca\u5176\u4f7f\u7528\u5be6\u4f8b\uff0c\u6df1\u5165\u4e86\u89e3\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\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-95916","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95916","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=95916"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95916\/revisions"}],"predecessor-version":[{"id":95917,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95916\/revisions\/95917"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}