{"id":162817,"date":"2024-11-04T18:15:20","date_gmt":"2024-11-04T10:15:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162817\/"},"modified":"2024-11-04T18:15:21","modified_gmt":"2024-11-04T10:15:21","slug":"%e6%95%99%e4%bd%a0%e8%bc%95%e9%ac%86%e6%93%8d%e4%bd%9c%ef%bc%9asql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a2%9e%e5%8a%a0%e5%a0%b1%e5%90%8d%e4%ba%ba%e6%95%b8%ef%bc%88%e5%a6%82%e4%bd%95%e7%94%a8sql%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162817\/","title":{"rendered":"\u6559\u4f60\u8f15\u9b06\u64cd\u4f5c\uff1aSQL\u6578\u64da\u5eab\u589e\u52a0\u5831\u540d\u4eba\u6578\uff08\u5982\u4f55\u7528SQL\u6578\u64da\u5eab\u589e\u52a0\u5831\u540d\u4eba\u6578\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%99%e4%bd%a0%e8%bc%95%e9%ac%86%e6%93%8d%e4%bd%9c%ef%bc%9asql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a2%9e%e5%8a%a0%e5%a0%b1%e5%90%8d%e4%ba%ba%e6%95%b8-ykWiCrWnNN\">\u6559\u4f60\u8f15\u9b06\u64cd\u4f5c\uff1aSQL\u6578\u64da\u5eab\u589e\u52a0\u5831\u540d\u4eba\u6578<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u8a31\u591a\u4f01\u696d\u548c\u7d44\u7e54\u90fd\u4f9d\u8cf4\u6578\u64da\u5eab\u4f86\u7ba1\u7406\u5176\u696d\u52d9\u904b\u4f5c\u3002\u7121\u8ad6\u662f\u5831\u540d\u7cfb\u7d71\u3001\u6703\u54e1\u7ba1\u7406\u9084\u662f\u6d3b\u52d5\u767b\u8a18\uff0cSQL\u6578\u64da\u5eab\u90fd\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528SQL\u6578\u64da\u5eab\u4f86\u589e\u52a0\u5831\u540d\u4eba\u6578\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 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id=\"%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-ykWiCrWnNN\">\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb<\/h2>\n<p>\u5728\u958b\u59cb\u589e\u52a0\u5831\u540d\u4eba\u6578\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a2d\u8a08\u6578\u64da\u5eab\u7684\u7d50\u69cb\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cregistrations\u201d\u7684\u8868\u683c\uff0c\u7528\u65bc\u5b58\u5132\u5831\u540d\u4fe1\u606f\u3002\u9019\u500b\u8868\u683c\u53ef\u80fd\u5305\u542b\u4ee5\u4e0b\u6b04\u4f4d\uff1a<\/p>\n<ul>\n<li><strong>id<\/strong>\uff1a\u5831\u540d\u7684\u552f\u4e00\u8b58\u5225\u78bc<\/li>\n<li><strong>event_name<\/strong>\uff1a\u6d3b\u52d5\u540d\u7a31<\/li>\n<li><strong>participant_name<\/strong>\uff1a\u53c3\u52a0\u8005\u59d3\u540d<\/li>\n<li><strong>registration_date<\/strong>\uff1a\u5831\u540d\u65e5\u671f<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u5275\u5efa\u9019\u500b\u8868\u683c\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE TABLE registrations (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    event_name VARCHAR(255) NOT NULL,\n    participant_name VARCHAR(255) NOT NULL,\n    registration_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);<\/code><\/pre>\n<h2 id=\"%e5%a2%9e%e5%8a%a0%e5%a0%b1%e5%90%8d%e4%ba%ba%e6%95%b8-ykWiCrWnNN\">\u589e\u52a0\u5831\u540d\u4eba\u6578<\/h2>\n<p>\u7576\u6211\u5011\u9700\u8981\u589e\u52a0\u5831\u540d\u4eba\u6578\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT\u8a9e\u53e5\u5c07\u65b0\u53c3\u52a0\u8005\u7684\u4fe1\u606f\u63d2\u5165\u5230\u201cregistrations\u201d\u8868\u683c\u4e2d\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u65b0\u5831\u540d\u7684SQL\u8a9e\u53e5\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO registrations (event_name, participant_name) \nVALUES ('2023\u5e74\u5ea6\u79d1\u6280\u8ad6\u58c7', '\u5f35\u4e09');<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6703\u5728\u201cregistrations\u201d\u8868\u683c\u4e2d\u65b0\u589e\u4e00\u689d\u8a18\u9304\uff0c\u8868\u793a\u53c3\u52a0\u8005\u5f35\u4e09\u5831\u540d\u53c3\u52a02023\u5e74\u5ea6\u79d1\u6280\u8ad6\u58c7\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e5%a0%b1%e5%90%8d%e4%ba%ba%e6%95%b8-ykWiCrWnNN\">\u67e5\u8a62\u5831\u540d\u4eba\u6578<\/h2>\n<p>\u70ba\u4e86\u67e5\u770b\u67d0\u500b\u6d3b\u52d5\u7684\u5831\u540d\u4eba\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528SELECT\u8a9e\u53e5\u4f86\u67e5\u8a62\u201cregistrations\u201d\u8868\u683c\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u7279\u5b9a\u6d3b\u52d5\u5831\u540d\u4eba\u6578\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT COUNT(*) AS total_participants \nFROM registrations \nWHERE event_name = '2023\u5e74\u5ea6\u79d1\u6280\u8ad6\u58c7';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de2023\u5e74\u5ea6\u79d1\u6280\u8ad6\u58c7\u7684\u5831\u540d\u4eba\u6578\u3002<\/p>\n<h2 id=\"%e6%9b%b4%e6%96%b0%e5%a0%b1%e5%90%8d%e4%bf%a1%e6%81%af-ykWiCrWnNN\">\u66f4\u65b0\u5831\u540d\u4fe1\u606f<\/h2>\n<p>\u5982\u679c\u9700\u8981\u66f4\u65b0\u67d0\u4f4d\u53c3\u52a0\u8005\u7684\u5831\u540d\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u53c3\u52a0\u8005\u59d3\u540d\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>UPDATE registrations \nSET participant_name = '\u674e\u56db' \nWHERE id = 1;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6703\u628aid\u70ba1\u7684\u53c3\u52a0\u8005\u59d3\u540d\u66f4\u65b0\u70ba\u674e\u56db\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e5%a0%b1%e5%90%8d%e4%bf%a1%e6%81%af-ykWiCrWnNN\">\u522a\u9664\u5831\u540d\u4fe1\u606f<\/h2>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u67d0\u4f4d\u53c3\u52a0\u8005\u7684\u5831\u540d\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u522a\u9664\u5831\u540d\u7684SQL\u8a9e\u53e5\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>DELETE FROM registrations \nWHERE id = 1;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6703\u522a\u9664id\u70ba1\u7684\u5831\u540d\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ykWiCrWnNN\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u7684\u4ecb\u7d39\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u4f7f\u7528SQL\u6578\u64da\u5eab\u4f86\u7ba1\u7406\u5831\u540d\u4eba\u6578\u662f\u76f8\u5c0d\u7c21\u55ae\u7684\u3002\u7121\u8ad6\u662f\u589e\u52a0\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u9084\u662f\u522a\u9664\u5831\u540d\u4fe1\u606f\uff0cSQL\u8a9e\u8a00\u90fd\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u652f\u6301\u3002\u5c0d\u65bc\u9700\u8981\u7ba1\u7406\u5927\u91cf\u5831\u540d\u6578\u64da\u7684\u4f01\u696d\u548c\u7d44\u7e54\u4f86\u8aaa\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u7d44\u7e54\uff0c\u5408\u9069\u7684\u4f3a\u670d\u5668\u9078\u64c7\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\uff0c\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u8f15\u9b06\u4f7f\u7528SQL\u6578\u64da\u5eab\u589e\u52a0\u5831\u540d\u4eba\u6578\uff0c\u638c\u63e1\u7c21\u55ae\u64cd\u4f5c\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-162817","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162817","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=162817"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162817\/revisions"}],"predecessor-version":[{"id":162818,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162817\/revisions\/162818"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}