{"id":60883,"date":"2024-10-13T06:37:16","date_gmt":"2024-10-12T22:37:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60883\/"},"modified":"2024-10-13T06:37:16","modified_gmt":"2024-10-12T22:37:16","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e8%87%aa%e5%8b%95%e5%a2%9e%e9%95%b7%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60883\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u4e2d\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u5be6\u969b\u64cd\u4f5c\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e8%87%aa%e5%8b%95%e5%a2%9e%e9%95%b7%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e6%96%b9%e6%b3%95-gJzJdXFnHc\">DB2\u6578\u64da\u5eab\u4e2d\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u5be6\u969b\u64cd\u4f5c\u65b9\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u91cd\u8981\u5143\u7d20\u3002\u5c0d\u65bcDB2\u6578\u64da\u5eab\u4f86\u8aaa\uff0c\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u8a2d\u8a08\u6a21\u5f0f\uff0c\u80fd\u5920\u7c21\u5316\u6578\u64da\u63d2\u5165\u7684\u904e\u7a0b\uff0c\u4e26\u78ba\u4fdd\u4e3b\u9375\u7684\u552f\u4e00\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728DB2\u4e2d\u5982\u4f55\u5be6\u73fe\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u5177\u9ad4\u64cd\u4f5c\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%8b%95%e5%a2%9e%e9%95%b7%e4%b8%bb%e9%8d%b5%e7%9a%84%e6%a6%82%e5%bf%b5-gJzJdXFnHc\">\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u6982\u5ff5<\/h2>\n<p>\u81ea\u52d5\u589e\u9577\u4e3b\u9375\uff08Auto-increment Primary Key\uff09\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u4e3b\u9375\u8a2d\u8a08\uff0c\u7576\u65b0\u8a18\u9304\u88ab\u63d2\u5165\u5230\u6578\u64da\u8868\u4e2d\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u4e3b\u9375\u503c\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4e0d\u50c5\u6e1b\u5c11\u4e86\u624b\u52d5\u7ba1\u7406\u4e3b\u9375\u7684\u9ebb\u7169\uff0c\u9084\u80fd\u6709\u6548\u907f\u514d\u4e3b\u9375\u91cd\u8907\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e5%9c%a8db2%e4%b8%ad%e5%89%b5%e5%bb%ba%e8%87%aa%e5%8b%95%e5%a2%9e%e9%95%b7%e4%b8%bb%e9%8d%b5-gJzJdXFnHc\">\u5728DB2\u4e2d\u5275\u5efa\u81ea\u52d5\u589e\u9577\u4e3b\u9375<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5e8f\u5217\uff08Sequence\uff09\u4f86\u5be6\u73fe\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u3002\u5e8f\u5217\u662f\u4e00\u7a2e\u6578\u64da\u5eab\u5c0d\u8c61\uff0c\u7528\u65bc\u751f\u6210\u552f\u4e00\u7684\u6578\u5b57\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e5%89%b5%e5%bb%ba%e5%ba%8f%e5%88%97-gJzJdXFnHc\">\u6b65\u9a5f1\uff1a\u5275\u5efa\u5e8f\u5217<\/h3>\n<pre><code>CREATE SEQUENCE my_sequence\n    START WITH 1\n    INCREMENT BY 1\n    NO CYCLE;<\/code><\/pre>\n<p>\u4e0a\u8ff0SQL\u8a9e\u53e5\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba<code>my_sequence<\/code>\u7684\u5e8f\u5217\uff0c\u5f9e1\u958b\u59cb\uff0c\u6bcf\u6b21\u589e\u95771\uff0c\u4e26\u4e14\u4e0d\u6703\u5faa\u74b0\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e8%a1%a8-gJzJdXFnHc\">\u6b65\u9a5f2\uff1a\u5275\u5efa\u6578\u64da\u8868<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u8868\uff0c\u4e26\u5c07\u4e3b\u9375\u8a2d\u7f6e\u70ba\u4f7f\u7528\u5e8f\u5217\u751f\u6210\u7684\u503c\u3002<\/p>\n<pre><code>CREATE TABLE my_table (\n    id INT NOT NULL PRIMARY KEY,\n    name VARCHAR(100)\n);<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e6%99%82%e4%bd%bf%e7%94%a8%e5%ba%8f%e5%88%97-gJzJdXFnHc\">\u6b65\u9a5f3\uff1a\u63d2\u5165\u6578\u64da\u6642\u4f7f\u7528\u5e8f\u5217<\/h3>\n<p>\u5728\u63d2\u5165\u6578\u64da\u6642\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528<code>NEXT VALUE FOR<\/code>\u8a9e\u53e5\u4f86\u7372\u53d6\u5e8f\u5217\u7684\u4e0b\u4e00\u500b\u503c\uff0c\u4e26\u5c07\u5176\u4f5c\u70ba\u4e3b\u9375\u63d2\u5165\u3002<\/p>\n<pre><code>INSERT INTO my_table (id, name)\nVALUES (NEXT VALUE FOR my_sequence, 'Alice');<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0c<code>id<\/code>\u5b57\u6bb5\u90fd\u6703\u81ea\u52d5\u7372\u53d6\u4e00\u500b\u552f\u4e00\u7684\u503c\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%8b%95%e5%a2%9e%e9%95%b7%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%84%aa%e5%8b%a2-gJzJdXFnHc\">\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u7c21\u5316\u6578\u64da\u63d2\u5165\uff1a<\/strong>\u958b\u767c\u8005\u4e0d\u9700\u8981\u624b\u52d5\u7ba1\u7406\u4e3b\u9375\u7684\u751f\u6210\uff0c\u6e1b\u5c11\u4e86\u51fa\u932f\u7684\u6a5f\u6703\u3002<\/li>\n<li><strong>\u78ba\u4fdd\u552f\u4e00\u6027\uff1a<\/strong>\u4f7f\u7528\u5e8f\u5217\u751f\u6210\u7684\u4e3b\u9375\u80fd\u5920\u4fdd\u8b49\u6bcf\u4e00\u689d\u8a18\u9304\u7684\u552f\u4e00\u6027\uff0c\u907f\u514d\u4e86\u91cd\u8907\u4e3b\u9375\u7684\u554f\u984c\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u6027\u80fd\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u5e8f\u5217\u80fd\u5920\u6709\u6548\u5730\u751f\u6210\u552f\u4e00\u503c\uff0c\u63d0\u5347\u6578\u64da\u63d2\u5165\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-gJzJdXFnHc\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5e8f\u5217\u7684\u7bc4\u570d\uff1a\u78ba\u4fdd\u5e8f\u5217\u7684\u7bc4\u570d\u8db3\u5920\u5927\uff0c\u4ee5\u907f\u514d\u5728\u5927\u91cf\u6578\u64da\u63d2\u5165\u6642\u51fa\u73fe\u6ea2\u51fa\u3002<\/li>\n<li>\u4e26\u767c\u63a7\u5236\uff1a\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0c\u61c9\u8003\u616e\u5e8f\u5217\u7684\u6027\u80fd\uff0c\u907f\u514d\u56e0\u70ba\u9396\u7af6\u722d\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<li>\u6578\u64da\u6062\u5fa9\uff1a\u5728\u6578\u64da\u6062\u5fa9\u904e\u7a0b\u4e2d\uff0c\u5e8f\u5217\u7684\u503c\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u9700\u8b39\u614e\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 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href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3DB2\u6578\u64da\u5eab\u4e2d\u81ea\u52d5\u589e\u9577\u4e3b\u9375\u7684\u5be6\u969b\u64cd\u4f5c\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u4e00\u81f4\u6027\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-60883","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60883","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=60883"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60883\/revisions"}],"predecessor-version":[{"id":60884,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60883\/revisions\/60884"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60883"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}