{"id":187890,"date":"2024-11-11T18:02:21","date_gmt":"2024-11-11T10:02:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187890\/"},"modified":"2024-11-11T18:02:22","modified_gmt":"2024-11-11T10:02:22","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e5%a2%9e%e9%9d%9e%e4%b8%bb%e9%8d%b5%e6%80%8e%e9%ba%bc%e8%a8%ad%e7%bd%ae-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%9d%9e%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187890\/","title":{"rendered":"\u6578\u64da\u5eab\u81ea\u589e\u975e\u4e3b\u9375\u600e\u9ebc\u8a2d\u7f6e (\u6578\u64da\u5eab\u975e\u4e3b\u9375\u81ea\u589e)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%87%aa%e5%a2%9e%e9%9d%9e%e4%b8%bb%e9%8d%b5%e6%80%8e%e9%ba%bc%e8%a8%ad%e7%bd%ae-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%9d%9e%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e-VEtTPXsvFl\">\u6578\u64da\u5eab\u81ea\u589e\u975e\u4e3b\u9375\u600e\u9ebc\u8a2d\u7f6e (\u6578\u64da\u5eab\u975e\u4e3b\u9375\u81ea\u589e)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u81ea\u589e\u5b57\u6bb5\u901a\u5e38\u7528\u65bc\u4e3b\u9375\uff0c\u4ee5\u78ba\u4fdd\u6bcf\u4e00\u689d\u8a18\u9304\u90fd\u6709\u552f\u4e00\u7684\u6a19\u8b58\u3002\u7136\u800c\uff0c\u6709\u6642\u5019\u6211\u5011\u9700\u8981\u5728\u975e\u4e3b\u9375\u5b57\u6bb5\u4e0a\u8a2d\u7f6e\u81ea\u589e\u529f\u80fd\uff0c\u4ee5\u4fbf\u5728\u7279\u5b9a\u60c5\u6cc1\u4e0b\u81ea\u52d5\u751f\u6210\u552f\u4e00\u503c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-VEtTPXsvFl\">\u81ea\u589e\u5b57\u6bb5\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u81ea\u589e\u5b57\u6bb5\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u81ea\u52d5\u751f\u6210\u552f\u4e00\u7684\u6574\u6578\u503c\u3002\u9019\u5728\u6578\u64da\u5eab\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u6e1b\u5c11\u624b\u52d5\u8f38\u5165\u932f\u8aa4\u4e26\u63d0\u9ad8\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u96d6\u7136\u81ea\u589e\u5b57\u6bb5\u901a\u5e38\u8207\u4e3b\u9375\u4e00\u8d77\u4f7f\u7528\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u5728\u975e\u4e3b\u9375\u5b57\u6bb5\u4e0a\u5be6\u73fe\u985e\u4f3c\u7684\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e9%9d%9e%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5-VEtTPXsvFl\">\u70ba\u4ec0\u9ebc\u9700\u8981\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5<\/h2>\n<p>\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u7684\u539f\u56e0\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u9700\u8981\u70ba\u67d0\u4e9b\u696d\u52d9\u908f\u8f2f\u751f\u6210\u552f\u4e00\u6a19\u8b58\u7b26\u3002<\/li>\n<li>\u5e0c\u671b\u5728\u6578\u64da\u8868\u4e2d\u4fdd\u6301\u67d0\u7a2e\u6392\u5e8f\u6216\u5206\u7d44\u3002<\/li>\n<li>\u9700\u8981\u5728\u591a\u500b\u8868\u4e4b\u9593\u9032\u884c\u95dc\u806f\u6642\uff0c\u63d0\u4f9b\u984d\u5916\u7684\u552f\u4e00\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%ae%e9%9d%9e%e4%b8%bb%e9%8d%b5%e8%87%aa%e5%a2%9e%e5%ad%97%e6%ae%b5-VEtTPXsvFl\">\u5982\u4f55\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5982\u4f55\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"mysql-VEtTPXsvFl\">MySQL<\/h3>\n<p>\u5728MySQL\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u89f8\u767c\u5668\u4f86\u5be6\u73fe\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE example (\n    id INT NOT NULL AUTO_INCREMENT,\n    non_primary_auto_increment_field INT,\n    PRIMARY KEY (id)\n);\n\nDELIMITER \/\/\nCREATE TRIGGER before_insert_example\nBEFORE INSERT ON example\nFOR EACH ROW\nBEGIN\n    SET NEW.non_primary_auto_increment_field = (SELECT COALESCE(MAX(non_primary_auto_increment_field), 0) + 1 FROM example);\nEND;\n\/\/\nDELIMITER ;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba `example` \u7684\u8868\uff0c\u4e26\u4f7f\u7528\u89f8\u767c\u5668\u5728\u6bcf\u6b21\u63d2\u5165\u65b0\u8a18\u9304\u6642\u81ea\u52d5\u751f\u6210 `non_primary_auto_increment_field` \u7684\u503c\u3002<\/p>\n<h3 id=\"postgresql-VEtTPXsvFl\">PostgreSQL<\/h3>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5e8f\u5217\u4f86\u5be6\u73fe\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE SEQUENCE non_primary_seq;\n\nCREATE TABLE example (\n    id SERIAL PRIMARY KEY,\n    non_primary_auto_increment_field INT DEFAULT nextval('non_primary_seq')\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u5e8f\u5217 `non_primary_seq`\uff0c\u4e26\u5c07\u5176\u7528\u4f5c `non_primary_auto_increment_field` \u7684\u9ed8\u8a8d\u503c\u3002<\/p>\n<h3 id=\"sql-server-VEtTPXsvFl\">SQL Server<\/h3>\n<p>\u5728SQL Server\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u8a08\u7b97\u5217\u4f86\u5be6\u73fe\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE example (\n    id INT IDENTITY(1,1) PRIMARY KEY,\n    non_primary_auto_increment_field AS (ROW_NUMBER() OVER (ORDER BY id))\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c`non_primary_auto_increment_field` \u662f\u4e00\u500b\u8a08\u7b97\u5217\uff0c\u4f7f\u7528 `ROW_NUMBER()` \u51fd\u6578\u81ea\u52d5\u751f\u6210\u552f\u4e00\u503c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-VEtTPXsvFl\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u6642\uff0c\u9700\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u81ea\u589e\u908f\u8f2f\u4e0d\u6703\u5c0e\u81f4\u91cd\u8907\u503c\u3002<\/li>\n<li>\u8003\u616e\u6027\u80fd\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002<\/li>\n<li>\u6e2c\u8a66\u89f8\u767c\u5668\u6216\u5e8f\u5217\u7684\u884c\u70ba\uff0c\u4ee5\u78ba\u4fdd\u5176\u6309\u9810\u671f\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VEtTPXsvFl\">\u7e3d\u7d50<\/h2>\n<p>\u8a2d\u7f6e\u6578\u64da\u5eab\u4e2d\u7684\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\u53ef\u4ee5\u70ba\u6578\u64da\u7ba1\u7406\u63d0\u4f9b\u9748\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u89f8\u767c\u5668\u3001\u5e8f\u5217\u9084\u662f\u8a08\u7b97\u5217\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u548c\u696d\u52d9\u9700\u6c42\u3002\u4e86\u89e3\u9019\u4e9b\u6280\u8853\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u8a2d\u7f6e\u975e\u4e3b\u9375\u81ea\u589e\u5b57\u6bb5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u63d2\u5165\u904e\u7a0b\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-187890","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187890","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=187890"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187890\/revisions"}],"predecessor-version":[{"id":187891,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187890\/revisions\/187891"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}