{"id":60443,"date":"2024-10-13T02:54:17","date_gmt":"2024-10-12T18:54:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60443\/"},"modified":"2024-10-13T02:54:17","modified_gmt":"2024-10-12T18:54:17","slug":"db2%e5%b8%b8%e7%94%a8%e5%91%bd%e4%bb%a4%e8%88%87%e5%85%b6%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%e7%9a%84%e5%a5%bd%e8%99%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60443\/","title":{"rendered":"DB2\u5e38\u7528\u547d\u4ee4\u8207\u5176\u5be6\u969b\u64cd\u4f5c\u6280\u5de7\u7684\u597d\u8655"},"content":{"rendered":"<h1 id=\"db2%e5%b8%b8%e7%94%a8%e5%91%bd%e4%bb%a4%e8%88%87%e5%85%b6%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%e7%9a%84%e5%a5%bd%e8%99%95-OSzjHIxKTQ\">DB2\u5e38\u7528\u547d\u4ee4\u8207\u5176\u5be6\u969b\u64cd\u4f5c\u6280\u5de7\u7684\u597d\u8655<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002IBM\u7684DB2\u662f\u4e00\u6b3e\u529f\u80fd\u5f37\u5927\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u74b0\u5883\u4e2d\u3002\u638c\u63e1DB2\u7684\u5e38\u7528\u547d\u4ee4\u53ca\u5176\u64cd\u4f5c\u6280\u5de7\uff0c\u4e0d\u50c5\u80fd\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5206\u6790\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0eDB2\u7684\u5e38\u7528\u547d\u4ee4\u53ca\u5176\u5be6\u969b\u64cd\u4f5c\u6280\u5de7\u7684\u597d\u8655\u3002<\/p>\n<h2 id=\"db2%e5%b8%b8%e7%94%a8%e5%91%bd%e4%bb%a4%e6%a6%82%e8%bf%b0-OSzjHIxKTQ\">DB2\u5e38\u7528\u547d\u4ee4\u6982\u8ff0<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u547d\u4ee4\u4f86\u57f7\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u547d\u4ee4\uff1a<\/p>\n<ul>\n<li><code>CONNECT<\/code>\uff1a\u7528\u65bc\u9023\u63a5\u5230\u6307\u5b9a\u7684\u6578\u64da\u5eab\u3002<\/li>\n<li><code>CREATE TABLE<\/code>\uff1a\u7528\u65bc\u5275\u5efa\u65b0\u8868\u3002<\/li>\n<li><code>INSERT<\/code>\uff1a\u7528\u65bc\u5411\u8868\u4e2d\u63d2\u5165\u6578\u64da\u3002<\/li>\n<li><code>SELECT<\/code>\uff1a\u7528\u65bc\u67e5\u8a62\u6578\u64da\u3002<\/li>\n<li><code>UPDATE<\/code>\uff1a\u7528\u65bc\u66f4\u65b0\u8868\u4e2d\u7684\u6578\u64da\u3002<\/li>\n<li><code>DELETE<\/code>\uff1a\u7528\u65bc\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u3002<\/li>\n<li><code>DROP TABLE<\/code>\uff1a\u7528\u65bc\u522a\u9664\u8868\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7-OSzjHIxKTQ\">\u5be6\u969b\u64cd\u4f5c\u6280\u5de7<\/h2>\n<p>\u638c\u63e1DB2\u7684\u547d\u4ee4\u4e0d\u50c5\u50c5\u662f\u8a18\u4f4f\u8a9e\u6cd5\uff0c\u9084\u9700\u8981\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u4f7f\u7528\u9019\u4e9b\u547d\u4ee4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5be6\u969b\u64cd\u4f5c\u6280\u5de7\uff1a<\/p>\n<h3>1. \u4f7f\u7528<code>EXPLAIN<\/code>\u547d\u4ee4\u9032\u884c\u67e5\u8a62\u512a\u5316<\/h3>\n<p>\u5728\u57f7\u884c\u8907\u96dc\u67e5\u8a62\u4e4b\u524d\uff0c\u53ef\u4ee5\u4f7f\u7528<code>EXPLAIN<\/code>\u547d\u4ee4\u4f86\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u3002\u9019\u6709\u52a9\u65bc\u8b58\u5225\u6f5b\u5728\u7684\u6027\u80fd\u74f6\u9838\uff0c\u5f9e\u800c\u9032\u884c\u512a\u5316\u3002<\/p>\n<pre><code>EXPLAIN PLAN FOR\nSELECT * FROM employees WHERE department = 'Sales';\n<\/code><\/pre>\n<h3>2. \u5229\u7528<code>COMMIT<\/code>\u548c<code>ROLLBACK<\/code>\u7ba1\u7406\u4e8b\u52d9<\/h3>\n<p>\u5728\u9032\u884c\u6578\u64da\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528<code>COMMIT<\/code>\u548c<code>ROLLBACK<\/code>\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u4e8b\u52d9\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<pre><code>BEGIN;\nINSERT INTO employees (name, department) VALUES ('John Doe', 'Sales');\nCOMMIT;  -- \u6216\u8005\u4f7f\u7528 ROLLBACK; \u4f86\u64a4\u92b7\u64cd\u4f5c\n<\/code><\/pre>\n<h3>3. \u4f7f\u7528<code>JOIN<\/code>\u9032\u884c\u591a\u8868\u67e5\u8a62<\/h3>\n<p>\u5728\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u7372\u53d6\u6578\u64da\u6642\uff0c\u4f7f\u7528<code>JOIN<\/code>\u53ef\u4ee5\u6709\u6548\u5730\u5408\u4f75\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT e.name, d.department_name\nFROM employees e\nJOIN departments d ON e.department_id = d.id;\n<\/code><\/pre>\n<h2 id=\"db2%e5%91%bd%e4%bb%a4%e7%9a%84%e5%a5%bd%e8%99%95-OSzjHIxKTQ\">DB2\u547d\u4ee4\u7684\u597d\u8655<\/h2>\n<p>\u638c\u63e1DB2\u7684\u5e38\u7528\u547d\u4ee4\u53ca\u5176\u64cd\u4f5c\u6280\u5de7\uff0c\u80fd\u5e36\u4f86\u591a\u65b9\u9762\u7684\u597d\u8655\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u9ad8\u6548\u7387\uff1a<\/strong>\u719f\u7df4\u4f7f\u7528\u547d\u4ee4\u53ef\u4ee5\u5927\u5e45\u5ea6\u63d0\u9ad8\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u6e1b\u5c11\u91cd\u8907\u6027\u5de5\u4f5c\u3002<\/li>\n<li><strong>\u6578\u64da\u5b89\u5168\u6027\uff1a<\/strong>\u901a\u904e\u4e8b\u52d9\u7ba1\u7406\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\uff0c\u964d\u4f4e\u6578\u64da\u640d\u58de\u7684\u98a8\u96aa\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u4f7f\u7528<code>EXPLAIN<\/code>\u7b49\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff0c\u9032\u884c\u91dd\u5c0d\u6027\u7684\u512a\u5316\u3002<\/li>\n<li><strong>\u9748\u6d3b\u67e5\u8a62\uff1a<\/strong>\u638c\u63e1<code>JOIN<\/code>\u7b49\u67e5\u8a62\u6280\u5de7\uff0c\u53ef\u4ee5\u9748\u6d3b\u5730\u5f9e\u591a\u500b\u8868\u4e2d\u7372\u53d6\u6240\u9700\u6578\u64da\uff0c\u6eff\u8db3\u4e0d\u540c\u7684\u696d\u52d9\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OSzjHIxKTQ\">\u7e3d\u7d50<\/h2>\n<p>DB2\u7684\u5e38\u7528\u547d\u4ee4\u53ca\u5176\u64cd\u4f5c\u6280\u5de7\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u638c\u63e1\u9019\u4e9b\u547d\u4ee4\uff0c\u4f7f\u7528\u8005\u80fd\u5920\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u6027\uff0c\u4e26\u9032\u884c\u6027\u80fd\u512a\u5316\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5982<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\uff0c\u5c07\u6709\u52a9\u65bc\u66f4\u597d\u5730\u652f\u6301\u696d\u52d9\u904b\u71df\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u5e38\u7528\u547d\u4ee4\u53ca\u5be6\u969b\u64cd\u4f5c\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\uff0c\u52a9\u60a8\u8f15\u9b06\u61c9\u5c0d\u5404\u7a2e\u6578\u64da\u6311\u6230\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-60443","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60443","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=60443"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60443\/revisions"}],"predecessor-version":[{"id":60444,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60443\/revisions\/60444"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}