{"id":60955,"date":"2024-10-13T07:13:14","date_gmt":"2024-10-12T23:13:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60955\/"},"modified":"2024-10-13T07:13:14","modified_gmt":"2024-10-12T23:13:14","slug":"db2%e6%b8%b8%e6%a8%99%e5%be%aa%e7%92%b0%e5%95%8f%e9%a1%8c%e9%80%b2%e7%94%a8%e5%af%a6%e4%be%8b%e8%ac%9b%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60955\/","title":{"rendered":"DB2\u6e38\u6a19\u5faa\u74b0\u554f\u984c\u9032\u7528\u5be6\u4f8b\u8b1b\u89e3"},"content":{"rendered":"<h1 id=\"db2%e6%b8%b8%e6%a8%99%e5%be%aa%e7%92%b0%e5%95%8f%e9%a1%8c%e9%80%b2%e7%94%a8%e5%af%a6%e4%be%8b%e8%ac%9b%e8%a7%a3-vCkMdHMvXJ\">DB2\u6e38\u6a19\u5faa\u74b0\u554f\u984c\u9032\u7528\u5be6\u4f8b\u8b1b\u89e3<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u7684\u5de5\u5177\u3002IBM\u7684DB2\u8cc7\u6599\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6e38\u6a19\u529f\u80fd\uff0c\u4f46\u5728\u4f7f\u7528\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u6311\u6230\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eDB2\u6e38\u6a19\u5faa\u74b0\u7684\u554f\u984c\uff0c\u4e26\u901a\u904e\u5be6\u4f8b\u4f86\u8aaa\u660e\u5982\u4f55\u6709\u6548\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afdb2%e6%b8%b8%e6%a8%99%ef%bc%9f-vCkMdHMvXJ\">\u4ec0\u9ebc\u662fDB2\u6e38\u6a19\uff1f<\/h2>\n<p>\u6e38\u6a19\u662f\u4e00\u7a2e\u8cc7\u6599\u5eab\u5c0d\u8c61\uff0c\u5141\u8a31\u7528\u6236\u9010\u884c\u6aa2\u7d22\u67e5\u8a62\u7d50\u679c\u3002DB2\u4e2d\u7684\u6e38\u6a19\u53ef\u4ee5\u5206\u70ba\u975c\u614b\u6e38\u6a19\u548c\u52d5\u614b\u6e38\u6a19\u3002\u975c\u614b\u6e38\u6a19\u5728\u6253\u958b\u6642\u5c31\u78ba\u5b9a\u4e86\u7d50\u679c\u96c6\uff0c\u800c\u52d5\u614b\u6e38\u6a19\u5247\u5728\u6bcf\u6b21\u8a2a\u554f\u6642\u91cd\u65b0\u8a08\u7b97\u7d50\u679c\u96c6\u3002<\/p>\n<h2 id=\"%e6%b8%b8%e6%a8%99%e5%be%aa%e7%92%b0%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-vCkMdHMvXJ\">\u6e38\u6a19\u5faa\u74b0\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e38\u6a19\u5faa\u74b0\u662f\u6307\u5728\u4e00\u500b\u5faa\u74b0\u7d50\u69cb\u4e2d\u4f7f\u7528\u6e38\u6a19\u4f86\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u9700\u8981\u5c0d\u6bcf\u4e00\u884c\u6578\u64da\u9032\u884c\u64cd\u4f5c\u6642\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u66f4\u65b0\u3001\u522a\u9664\u6216\u8a08\u7b97\u67d0\u4e9b\u503c\u3002<\/p>\n<h3 id=\"%e6%b8%b8%e6%a8%99%e5%be%aa%e7%92%b0%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-vCkMdHMvXJ\">\u6e38\u6a19\u5faa\u74b0\u7684\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>\nDECLARE cursor_name CURSOR FOR\nSELECT column1, column2 FROM table_name;\n\nOPEN cursor_name;\n\nFETCH cursor_name INTO variable1, variable2;\n\nWHILE SQLCODE = 0 DO\n    -- \u5728\u9019\u88e1\u9032\u884c\u6578\u64da\u8655\u7406\n    FETCH cursor_name INTO variable1, variable2;\nEND WHILE;\n\nCLOSE cursor_name;\n<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%b8%b8%e6%a8%99%e5%be%aa%e7%92%b0%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-vCkMdHMvXJ\">\u5be6\u4f8b\uff1a\u4f7f\u7528\u6e38\u6a19\u5faa\u74b0\u66f4\u65b0\u6578\u64da<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cemployees\u201d\u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684\u57fa\u672c\u4fe1\u606f\u3002\u6211\u5011\u5e0c\u671b\u6839\u64da\u67d0\u4e9b\u689d\u4ef6\u66f4\u65b0\u54e1\u5de5\u7684\u85aa\u6c34\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u6e38\u6a19\u5faa\u74b0\u7684\u5177\u9ad4\u5be6\u73fe\uff1a<\/p>\n<pre><code>\nDECLARE emp_cursor CURSOR FOR\nSELECT emp_id, salary FROM employees WHERE department = 'Sales';\n\nDECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;\n\nSET done = 0;\n\nOPEN emp_cursor;\n\nFETCH emp_cursor INTO emp_id, salary;\n\nWHILE done = 0 DO\n    -- \u5047\u8a2d\u6211\u5011\u8981\u5c07\u85aa\u6c34\u589e\u52a010%\n    SET new_salary = salary * 1.10;\n    \n    UPDATE employees SET salary = new_salary WHERE emp_id = emp_id;\n    \n    FETCH emp_cursor INTO emp_id, salary;\nEND WHILE;\n\nCLOSE emp_cursor;\n<\/code><\/pre>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c%e5%8f%8a%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-vCkMdHMvXJ\">\u5e38\u898b\u554f\u984c\u53ca\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e6%b8%b8%e6%a8%99%e6%9c%aa%e6%ad%a3%e7%a2%ba%e9%97%9c%e9%96%89-vCkMdHMvXJ\">1. \u6e38\u6a19\u672a\u6b63\u78ba\u95dc\u9589<\/h3>\n<p>\u5728\u4f7f\u7528\u6e38\u6a19\u5f8c\uff0c\u5fc5\u9808\u78ba\u4fdd\u95dc\u9589\u6e38\u6a19\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002\u5982\u679c\u5fd8\u8a18\u95dc\u9589\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u8cc7\u6e90\u6cc4\u6f0f\u3002<\/p>\n<h3 id=\"2-sqlcode%e6%9c%aa%e6%ad%a3%e7%a2%ba%e8%99%95%e7%90%86-vCkMdHMvXJ\">2. SQLCODE\u672a\u6b63\u78ba\u8655\u7406<\/h3>\n<p>\u5728\u5faa\u74b0\u4e2d\uff0c\u61c9\u8a72\u6b63\u78ba\u8655\u7406SQLCODE\uff0c\u4ee5\u78ba\u4fdd\u5728\u6c92\u6709\u66f4\u591a\u6578\u64da\u6642\u80fd\u5920\u5b89\u5168\u9000\u51fa\u5faa\u74b0\u3002<\/p>\n<h3 id=\"3-%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c-vCkMdHMvXJ\">3. \u6027\u80fd\u554f\u984c<\/h3>\n<p>\u4f7f\u7528\u6e38\u6a19\u5faa\u74b0\u6642\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u5c0d\u65bc\u5927\u91cf\u6578\u64da\u7684\u8655\u7406\uff0c\u5efa\u8b70\u4f7f\u7528\u6279\u91cf\u64cd\u4f5c\u6216\u5176\u4ed6\u66f4\u9ad8\u6548\u7684\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vCkMdHMvXJ\">\u7e3d\u7d50<\/h2>\n<p>DB2\u6e38\u6a19\u5faa\u74b0\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u9010\u884c\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u7136\u800c\uff0c\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u6ce8\u610f\u6e38\u6a19\u7684\u6b63\u78ba\u4f7f\u7528\u548c\u8cc7\u6e90\u7ba1\u7406\u3002\u901a\u904e\u672c\u6587\u7684\u5be6\u4f8b\u548c\u5efa\u8b70\uff0c\u5e0c\u671b\u80fd\u5920\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u61c9\u7528DB2\u6e38\u6a19\u5faa\u74b0\u6280\u8853\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u6216\u5176\u4ed6<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eDB2\u6e38\u6a19\u5faa\u74b0\u554f\u984c\uff0c\u901a\u904e\u5be6\u4f8b\u8b1b\u89e3\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/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-60955","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60955","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=60955"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60955\/revisions"}],"predecessor-version":[{"id":60956,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60955\/revisions\/60956"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}