{"id":201046,"date":"2025-05-06T09:13:11","date_gmt":"2025-05-06T01:13:11","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201046\/"},"modified":"2025-05-06T09:13:11","modified_gmt":"2025-05-06T01:13:11","slug":"postgresql-%e4%b8%ad%e5%a6%82%e4%bd%95%e7%94%9f%e6%88%90%e5%b8%a6%e6%9c%89%e8%87%aa%e5%ae%9a%e4%b9%89%e6%a0%bc%e5%bc%8f%e7%9a%84%e6%95%b0%e6%8d%ae%e5%ba%93id%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201046\/","title":{"rendered":"PostgreSQL \u4e2d\u5982\u4f55\u751f\u6210\u5e26\u6709\u81ea\u5b9a\u4e49\u683c\u5f0f\u7684\u6570\u636e\u5e93ID\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PostgreSQL \u4e2d\u5982\u4f55\u751f\u6210\u5e26\u6709\u81ea\u5b9a\u4e49\u683c\u5f0f\u7684\u6570\u636e\u5e93ID\uff1f<\/h1>\n<p>\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6570\u636e\u5e93\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aPostgreSQL \u4e2d\u5982\u4f55\u751f\u6210\u5e26\u6709\u81ea\u5b9a\u4e49\u683c\u5f0f\u7684\u6570\u636e\u5e93ID\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241127\/17326985796746e1d382b16.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u751f\u6210\u5e26\u6709\u81ea\u5b9a\u4e49\u683c\u5f0f\u7684\u6570\u636e\u5e93id\uff1f<\/strong><\/p>\n<p>\u5728 postgresql \u4e2d\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5177\u6709\u7279\u5b9a\u683c\u5f0f\u7684 id\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u56fa\u5b9a\u5b57\u7b26\u4e32\u52a0\u4e0a\u6307\u5b9a\u957f\u5ea6\u7684\u81ea\u589e\u957f\u6570\u5b57\uff08\u4f8b\uff1a&#8217;bg-0000000000000001&#8217;\uff09<\/li>\n<li>\u56fa\u5b9a\u5b57\u7b26\u4e32\u52a0\u4e0a\u6307\u5b9a\u957f\u5ea6\u7684\u968f\u673a\u5b57\u6bcd\u6570\u5b57\uff08\u4f8b\uff1a&#8217;bg-000857y3ex&#8217;\uff09<\/li>\n<\/ul>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u8981\u751f\u6210\u8fd9\u79cd\u683c\u5f0f\u7684 id\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 postgresql \u7684\u5185\u7f6e\u6570\u636e\u7c7b\u578b serial \u548c\u5b57\u7b26\u4e32\u8fde\u63a5\u51fd\u6570 concat()\u3002<\/p>\n<p><strong>\u81ea\u589e\u957f\u6570\u5b57\u683c\u5f0f<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5e26\u6709\u81ea\u589e\u957f\u6570\u5b57\u7684 id\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>create table your_table_name (\n    id text primary key default concat('bg-', lpad(serial, 16, '0'))\n);<\/pre>\n<ul>\n<li>serial \u6570\u636e\u7c7b\u578b\u7528\u4e8e\u751f\u6210\u81ea\u589e\u957f\u7684\u5e8f\u5217\u3002<\/li>\n<li>lpad() \u51fd\u6570\u7528\u4e8e\u5728\u6570\u5b57\u524d\u9762\u586b\u5145\u524d\u5bfc\u96f6\uff0c\u4ee5\u786e\u4fdd\u6240\u9700\u7684\u957f\u5ea6\u3002<\/li>\n<li>concat() \u51fd\u6570\u8fde\u63a5\u56fa\u5b9a\u5b57\u7b26\u4e32\u548c\u683c\u5f0f\u5316\u7684\u6570\u5b57\u4ee5\u521b\u5efa\u6700\u7ec8\u7684 id\u3002<\/li>\n<\/ul>\n<p><strong>\u968f\u673a\u5b57\u6bcd\u6570\u5b57\u683c\u5f0f<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5e26\u6709\u968f\u673a\u5b57\u6bcd\u6570\u5b57\u7684 id\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>CREATE TABLE your_table_name (\n    id TEXT PRIMARY KEY DEFAULT concat('bg-', MD5(RANDOM()))\n);<\/pre>\n<ul>\n<li>random() \u51fd\u6570\u751f\u6210\u4e00\u4e2a\u968f\u673a\u5b57\u7b26\u4e32\u3002<\/li>\n<li>md5() \u51fd\u6570\u5c06\u968f\u673a\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u5341\u516d\u8fdb\u5236\u503c\u3002<\/li>\n<li>concat() \u51fd\u6570\u8fde\u63a5\u56fa\u5b9a\u5b57\u7b26\u4e32\u548c\u5341\u516d\u8fdb\u5236\u503c\u4ee5\u521b\u5efa\u6700\u7ec8\u7684 id\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u4e2d\u5982\u4f55\u751f\u6210&#46;&#46;&#46;<\/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-201046","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201046","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=201046"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201046\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}