{"id":161891,"date":"2024-11-04T10:12:25","date_gmt":"2024-11-04T02:12:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/161891\/"},"modified":"2024-11-04T10:12:26","modified_gmt":"2024-11-04T02:12:26","slug":"%e5%b9%be%e5%80%8b%e7%b0%a1%e5%96%ae%e7%9a%84-db2-%e6%93%8d%e4%bd%9c%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/161891\/","title":{"rendered":"\u5e7e\u500b\u7c21\u55ae\u7684 DB2 \u64cd\u4f5c\u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"%e5%b9%be%e5%80%8b%e7%b0%a1%e5%96%ae%e7%9a%84-db2-%e6%93%8d%e4%bd%9c%e8%aa%9e%e5%8f%a5-rJNXLvNfBY\">\u5e7e\u500b\u7c21\u55ae\u7684 DB2 \u64cd\u4f5c\u8a9e\u53e5<\/h1>\n<p>DB2 \u662f IBM \u958b\u767c\u7684\u4e00\u6b3e\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u7d1a\u61c9\u7528\u4e2d\u3002\u7121\u8ad6\u662f\u6578\u64da\u7684\u67e5\u8a62\u3001\u66f4\u65b0\u9084\u662f\u7ba1\u7406\uff0cDB2 \u63d0\u4f9b\u4e86\u5f37\u5927\u7684 SQL \u8a9e\u8a00\u652f\u6301\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u500b\u7c21\u55ae\u7684 DB2 \u64cd\u4f5c\u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528 DB2 \u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"1-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e8%a1%a8-rJNXLvNfBY\">1. \u5275\u5efa\u6578\u64da\u8868<\/h2>\n<p>\u5728 DB2 \u4e2d\uff0c\u5275\u5efa\u6578\u64da\u8868\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE \u8868\u540d (\n    \u5217\u540d1 \u6578\u64da\u985e\u578b1,\n    \u5217\u540d2 \u6578\u64da\u985e\u578b2,\n    ...\n);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5275\u5efa\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684 ID\u3001\u59d3\u540d\u548c\u5e74\u9f61\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    employee_id INT PRIMARY KEY,\n    name VARCHAR(100),\n    age INT\n);<\/code><\/pre>\n<h2 id=\"2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-rJNXLvNfBY\">2. \u63d2\u5165\u6578\u64da<\/h2>\n<p>\u63d2\u5165\u6578\u64da\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>INSERT INTO \u8868\u540d (\u5217\u540d1, \u5217\u540d2, ...)\nVALUES (\u503c1, \u503c2, ...);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5411 <code>employees<\/code> \u8868\u4e2d\u63d2\u5165\u4e00\u689d\u6578\u64da\uff1a<\/p>\n<pre><code>INSERT INTO employees (employee_id, name, age)\nVALUES (1, '\u5f35\u4e09', 30);<\/code><\/pre>\n<h2 id=\"3-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-rJNXLvNfBY\">3. \u67e5\u8a62\u6578\u64da<\/h2>\n<p>\u67e5\u8a62\u6578\u64da\u7684\u57fa\u672c\u8a9e\u6cd5\u70ba\uff1a<\/p>\n<pre><code>SELECT \u5217\u540d1, \u5217\u540d2, ...\nFROM \u8868\u540d\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u67e5\u8a62\u6240\u6709\u54e1\u5de5\u7684\u59d3\u540d\u548c\u5e74\u9f61\uff1a<\/p>\n<pre><code>SELECT name, age\nFROM employees;<\/code><\/pre>\n<p>\u5982\u679c\u53ea\u60f3\u67e5\u8a62\u5e74\u9f61\u5927\u65bc 25 \u6b72\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>SELECT name, age\nFROM employees\nWHERE age &gt; 25;<\/code><\/pre>\n<h2 id=\"4-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-rJNXLvNfBY\">4. \u66f4\u65b0\u6578\u64da<\/h2>\n<p>\u66f4\u65b0\u6578\u64da\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u5217\u540d1 = \u503c1, \u5217\u540d2 = \u503c2, ...\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5c07\u54e1\u5de5 ID \u70ba 1 \u7684\u54e1\u5de5\u5e74\u9f61\u66f4\u65b0\u70ba 31\uff1a<\/p>\n<pre><code>UPDATE employees\nSET age = 31\nWHERE employee_id = 1;<\/code><\/pre>\n<h2 id=\"5-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-rJNXLvNfBY\">5. \u522a\u9664\u6578\u64da<\/h2>\n<p>\u522a\u9664\u6578\u64da\u7684\u8a9e\u6cd5\u70ba\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u522a\u9664\u54e1\u5de5 ID \u70ba 1 \u7684\u54e1\u5de5\uff1a<\/p>\n<pre><code>DELETE FROM employees\nWHERE employee_id = 1;<\/code><\/pre>\n<h2 id=\"6-%e5%89%b5%e5%bb%ba%e7%b4%a2%e5%bc%95-rJNXLvNfBY\">6. \u5275\u5efa\u7d22\u5f15<\/h2>\n<p>\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u5275\u5efa\u7d22\u5f15\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE INDEX \u7d22\u5f15\u540d\nON \u8868\u540d (\u5217\u540d);<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u70ba <code>employees<\/code> \u8868\u7684 <code>name<\/code> \u5217\u5275\u5efa\u7d22\u5f15\uff1a<\/p>\n<pre><code>CREATE INDEX idx_name\nON employees (name);<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-rJNXLvNfBY\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5e7e\u500b\u7c21\u55ae\u7684 DB2 \u64cd\u4f5c\u8a9e\u53e5\uff0c\u5305\u62ec\u5275\u5efa\u8868\u3001\u63d2\u5165\u6578\u64da\u3001\u67e5\u8a62\u6578\u64da\u3001\u66f4\u65b0\u6578\u64da\u3001\u522a\u9664\u6578\u64da\u548c\u5275\u5efa\u7d22\u5f15\u3002\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u662f\u4f7f\u7528 DB2 \u6578\u64da\u5eab\u7684\u57fa\u790e\uff0c\u638c\u63e1\u9019\u4e9b\u8a9e\u53e5\u5c07\u6709\u52a9\u65bc\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u6216\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5e7e\u500b\u7c21\u55ae\u7684 DB2 \u64cd\u4f5c\u8a9e\u53e5\uff0c\u5e6b\u52a9\u60a8\u5feb\u901f\u638c\u63e1\u6578\u64da\u5eab\u7ba1\u7406\u548c\u67e5\u8a62\u6280\u5de7\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\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-161891","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161891","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=161891"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161891\/revisions"}],"predecessor-version":[{"id":161892,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/161891\/revisions\/161892"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=161891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=161891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=161891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}