{"id":95384,"date":"2024-10-20T00:36:17","date_gmt":"2024-10-19T16:36:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95384\/"},"modified":"2024-10-20T00:36:18","modified_gmt":"2024-10-19T16:36:18","slug":"oracle%e4%bd%bf%e7%94%a8%e6%b8%b8%e6%a8%99%e7%9a%84%e5%af%a6%e4%be%8b%e6%bc%94%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95384\/","title":{"rendered":"Oracle\u4f7f\u7528\u6e38\u6a19\u7684\u5be6\u4f8b\u6f14\u793a"},"content":{"rendered":"<h1 id=\"oracle%e4%bd%bf%e7%94%a8%e6%b8%b8%e6%a8%99%e7%9a%84%e5%af%a6%e4%be%8b%e6%bc%94%e7%a4%ba-DaXdiakfAw\">Oracle\u4f7f\u7528\u6e38\u6a19\u7684\u5be6\u4f8b\u6f14\u793a<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u64cd\u4f5c\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u5de5\u5177\u3002\u5b83\u5141\u8a31\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\uff0c\u9019\u5728\u9700\u8981\u5c0d\u6578\u64da\u9032\u884c\u9010\u6b65\u64cd\u4f5c\u6642\u7279\u5225\u6709\u7528\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4e26\u901a\u904e\u5be6\u4f8b\u6f14\u793a\u5982\u4f55\u5728Oracle\u4e2d\u4f7f\u7528\u6e38\u6a19\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-DaXdiakfAw\">\u6e38\u6a19\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e38\u6a19\u53ef\u4ee5\u88ab\u8996\u70ba\u4e00\u500b\u6307\u5411\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u6307\u91dd\u3002\u7576\u57f7\u884c\u4e00\u500b\u67e5\u8a62\u6642\uff0cOracle\u6703\u751f\u6210\u4e00\u500b\u7d50\u679c\u96c6\uff0c\u6e38\u6a19\u5247\u7528\u65bc\u904d\u6b77\u9019\u500b\u7d50\u679c\u96c6\u3002\u6e38\u6a19\u4e3b\u8981\u5206\u70ba\u5169\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u986f\u5f0f\u6e38\u6a19\uff1a<\/strong>\u958b\u767c\u8005\u9700\u8981\u660e\u78ba\u5730\u5b9a\u7fa9\u548c\u63a7\u5236\u7684\u6e38\u6a19\u3002<\/li>\n<li><strong>\u96b1\u5f0f\u6e38\u6a19\uff1a<\/strong>Oracle\u81ea\u52d5\u7ba1\u7406\u7684\u6e38\u6a19\uff0c\u901a\u5e38\u7528\u65bc\u7c21\u55ae\u7684SQL\u8a9e\u53e5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%a1%af%e5%bc%8f%e6%b8%b8%e6%a8%99%e7%9a%84%e4%bd%bf%e7%94%a8-DaXdiakfAw\">\u986f\u5f0f\u6e38\u6a19\u7684\u4f7f\u7528<\/h2>\n<p>\u986f\u5f0f\u6e38\u6a19\u7684\u4f7f\u7528\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u5ba3\u544a\u6e38\u6a19<\/li>\n<li>\u6253\u958b\u6e38\u6a19<\/li>\n<li>\u63d0\u53d6\u6578\u64da<\/li>\n<li>\u95dc\u9589\u6e38\u6a19<\/li>\n<\/ol>\n<h3 id=\"%e5%af%a6%e4%be%8b%e6%bc%94%e7%a4%ba-DaXdiakfAw\">\u5be6\u4f8b\u6f14\u793a<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u986f\u5f0f\u6e38\u6a19\u7684\u7c21\u55ae\u793a\u4f8b\uff0c\u8a72\u793a\u4f8b\u5f9e\u4e00\u500b\u540d\u70ba\u201cemployees\u201d\u7684\u8868\u4e2d\u63d0\u53d6\u54e1\u5de5\u7684\u59d3\u540d\u548c\u5de5\u8cc7\u3002<\/p>\n<pre><code>\nDECLARE\n    CURSOR emp_cursor IS\n        SELECT first_name, salary FROM employees;\n    \n    emp_record emp_cursor%ROWTYPE;\nBEGIN\n    OPEN emp_cursor;  -- \u6253\u958b\u6e38\u6a19\n\n    LOOP\n        FETCH emp_cursor INTO emp_record;  -- \u63d0\u53d6\u6578\u64da\n        EXIT WHEN emp_cursor%NOTFOUND;  -- \u6aa2\u67e5\u662f\u5426\u5230\u9054\u7d50\u679c\u96c6\u672b\u5c3e\n        \n        -- \u8f38\u51fa\u54e1\u5de5\u59d3\u540d\u548c\u5de5\u8cc7\n        DBMS_OUTPUT.PUT_LINE('\u59d3\u540d: ' || emp_record.first_name || ', \u5de5\u8cc7: ' || emp_record.salary);\n    END LOOP;\n\n    CLOSE emp_cursor;  -- \u95dc\u9589\u6e38\u6a19\nEND;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5ba3\u544a\u4e86\u4e00\u500b\u6e38\u6a19\u201cemp_cursor\u201d\uff0c\u5b83\u67e5\u8a62\u201cemployees\u201d\u8868\u4e2d\u7684\u201cfirst_name\u201d\u548c\u201csalary\u201d\u5b57\u6bb5\u3002\u63a5\u8457\uff0c\u6211\u5011\u6253\u958b\u6e38\u6a19\u4e26\u4f7f\u7528\u4e00\u500b\u5faa\u74b0\u4f86\u9010\u884c\u63d0\u53d6\u6578\u64da\uff0c\u76f4\u5230\u5230\u9054\u7d50\u679c\u96c6\u7684\u672b\u5c3e\u3002\u6700\u5f8c\uff0c\u6211\u5011\u95dc\u9589\u6e38\u6a19\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/p>\n<h2 id=\"%e9%9a%b1%e5%bc%8f%e6%b8%b8%e6%a8%99%e7%9a%84%e4%bd%bf%e7%94%a8-DaXdiakfAw\">\u96b1\u5f0f\u6e38\u6a19\u7684\u4f7f\u7528<\/h2>\n<p>\u96b1\u5f0f\u6e38\u6a19\u5728\u57f7\u884c\u7c21\u55ae\u7684SQL\u8a9e\u53e5\u6642\u81ea\u52d5\u751f\u6210\uff0c\u958b\u767c\u8005\u7121\u9700\u624b\u52d5\u7ba1\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u96b1\u5f0f\u6e38\u6a19\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nBEGIN\n    FOR emp_record IN (SELECT first_name, salary FROM employees) LOOP\n        DBMS_OUTPUT.PUT_LINE('\u59d3\u540d: ' || emp_record.first_name || ', \u5de5\u8cc7: ' || emp_record.salary);\n    END LOOP;\nEND;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528FOR\u5faa\u74b0\u4f86\u904d\u6b77\u67e5\u8a62\u7d50\u679c\uff0c\u7121\u9700\u986f\u5f0f\u5730\u6253\u958b\u6216\u95dc\u9589\u6e38\u6a19\u3002\u9019\u4f7f\u5f97\u4ee3\u78bc\u66f4\u52a0\u7c21\u6f54\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DaXdiakfAw\">\u7e3d\u7d50<\/h2>\n<p>\u6e38\u6a19\u5728Oracle\u6578\u64da\u5eab\u4e2d\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\u7121\u8ad6\u662f\u986f\u5f0f\u6e38\u6a19\u9084\u662f\u96b1\u5f0f\u6e38\u6a19\uff0c\u90fd\u80fd\u5920\u6839\u64da\u4e0d\u540c\u7684\u9700\u6c42\u63d0\u4f9b\u9748\u6d3b\u7684\u6578\u64da\u64cd\u4f5c\u65b9\u5f0f\u3002\u5c0d\u65bc\u9700\u8981\u5728\u6578\u64da\u5eab\u4e2d\u9032\u884c\u8907\u96dc\u64cd\u4f5c\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u638c\u63e1\u6e38\u6a19\u7684\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728Oracle\u4e2d\u4f7f\u7528\u6e38\u6a19\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u4e2d\u6e38\u6a19\u7684\u5be6\u4f8b\u6f14\u793a\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u958b\u767c\u6280\u80fd\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-95384","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95384","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=95384"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95384\/revisions"}],"predecessor-version":[{"id":95385,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95384\/revisions\/95385"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}