{"id":162985,"date":"2024-11-04T19:41:23","date_gmt":"2024-11-04T11:41:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162985\/"},"modified":"2024-11-04T19:41:24","modified_gmt":"2024-11-04T11:41:24","slug":"%e6%95%99%e6%82%a8%e8%87%aa%e5%ae%9a%e7%be%a9sql%e5%87%bd%e6%95%b8%e6%a8%99%e7%b1%a4%e5%af%a6%e7%8f%be%e9%80%a3%e7%ba%8c%e6%bb%be%e5%8b%95%e6%96%87%e7%ab%a0%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162985\/","title":{"rendered":"\u6559\u60a8\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u6a19\u7c64\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u65b9\u6cd5"},"content":{"rendered":"

\u6559\u60a8\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u6a19\u7c64\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u65b9\u6cd5<\/h1>\n

\u5728\u73fe\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u5df2\u6210\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u5167\u5bb9\u5c55\u793a\u65b9\u5f0f\u3002\u9019\u7a2e\u65b9\u5f0f\u4e0d\u50c5\u80fd\u5920\u63d0\u5347\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u5920\u589e\u52a0\u7db2\u7ad9\u7684\u4e92\u52d5\u6027\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u901a\u904e\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u6a19\u7c64\u4f86\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\uff1f<\/h2>\n

\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u662f\u4e00\u7a2e\u7528\u6236\u754c\u9762\u8a2d\u8a08\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e0d\u91cd\u65b0\u52a0\u8f09\u9801\u9762\u7684\u60c5\u6cc1\u4e0b\uff0c\u6301\u7e8c\u67e5\u770b\u6587\u7ae0\u5167\u5bb9\u3002\u9019\u7a2e\u8a2d\u8a08\u901a\u5e38\u7528\u65bc\u65b0\u805e\u7db2\u7ad9\u3001\u535a\u5ba2\u548c\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\uff0c\u80fd\u5920\u6709\u6548\u5730\u5438\u5f15\u8b80\u8005\u7684\u6ce8\u610f\u529b\u4e26\u63d0\u9ad8\u5167\u5bb9\u7684\u53ef\u8b80\u6027\u3002<\/p>\n

\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u7684\u5fc5\u8981\u6027<\/h2>\n

\u5728\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u904e\u7a0b\u4e2d\uff0c\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u6587\u7ae0\u6578\u64da\u3002\u9019\u6a23\uff0c\u6211\u5011\u53ef\u4ee5\u6839\u64da\u7528\u6236\u7684\u9700\u6c42\u52d5\u614b\u52a0\u8f09\u5167\u5bb9\uff0c\u800c\u4e0d\u5fc5\u6bcf\u6b21\u90fd\u91cd\u65b0\u67e5\u8a62\u6574\u500b\u6578\u64da\u5eab\u3002<\/p>\n

\u6b65\u9a5f\u4e00\uff1a\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb<\/h3>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u8a2d\u8a08\u4e00\u500b\u5408\u9069\u7684\u6578\u64da\u5eab\u7d50\u69cb\u4f86\u5b58\u5132\u6587\u7ae0\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6587\u7ae0\u8868\u7d50\u69cb\u793a\u4f8b\uff1a<\/p>\n

\nCREATE TABLE articles (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    title VARCHAR(255) NOT NULL,\n    content TEXT NOT NULL,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n
\u6b65\u9a5f\u4e8c\uff1a\u7de8\u5beb\u81ea\u5b9a\u7fa9SQL\u51fd\u6578<\/h3>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u7de8\u5beb\u4e00\u500b\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u4f86\u7372\u53d6\u6587\u7ae0\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684SQL\u51fd\u6578\u793a\u4f8b\uff1a<\/p>\n
\nDELIMITER \/\/\nCREATE FUNCTION get_articles(offset INT, limit INT)\nRETURNS TABLE\nBEGIN\n    RETURN (SELECT * FROM articles ORDER BY created_at DESC LIMIT offset, limit);\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n
\u9019\u500b\u51fd\u6578\u63a5\u53d7\u5169\u500b\u53c3\u6578\uff1a\u504f\u79fb\u91cf\uff08offset\uff09\u548c\u9650\u5236\uff08limit\uff09\uff0c\u4e26\u8fd4\u56de\u6307\u5b9a\u7bc4\u570d\u5167\u7684\u6587\u7ae0\u6578\u64da\u3002<\/p>\n
\u6b65\u9a5f\u4e09\uff1a\u524d\u7aef\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5<\/h3>\n
\u5728\u524d\u7aef\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528JavaScript\u4f86\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u7684\u6548\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684JavaScript\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n
\nlet offset = 0;\nconst limit = 5;\n\nfunction loadArticles() {\n    fetch(`\/api\/get_articles?offset=${offset}&limit=${limit}`)\n        .then(response => response.json())\n        .then(data => {\n            const articlesContainer = document.getElementById('articles');\n            data.forEach(article => {\n                const articleElement = document.createElement('div');\n                articleElement.innerHTML = `
${article.title}<\/h2>
${article.content}<\/p>`;\n                articlesContainer.appendChild(articleElement);\n            });\n            offset += limit;\n        });\n}\n\nwindow.addEventListener('scroll', () => {\n    if (window.innerHeight + window.scrollY >= document.body.offsetHeight) {\n        loadArticles();\n    }\n});\n\nloadArticles(); \/\/ \u521d\u59cb\u52a0\u8f09\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u6703\u5728\u7528\u6236\u6efe\u52d5\u5230\u9801\u9762\u5e95\u90e8\u6642\u81ea\u52d5\u52a0\u8f09\u66f4\u591a\u6587\u7ae0\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u6a19\u7c64\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u529f\u80fd\u3002\u9019\u4e0d\u50c5\u63d0\u5347\u4e86\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u5920\u63d0\u9ad8\u7db2\u7ad9\u7684\u4e92\u52d5\u6027\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u642d\u5efa\u9ad8\u6548\u7684\u7db2\u7ad9\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u7db2\u7ad9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u548c\u512a\u8cea\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u81ea\u5b9a\u7fa9SQL\u51fd\u6578\u6a19\u7c64\uff0c\u5be6\u73fe\u9023\u7e8c\u6efe\u52d5\u6587\u7ae0\u7684\u6280\u5de7\uff0c\u63d0\u5347\u7db2\u7ad9\u5167\u5bb9\u5c55\u793a\u6548\u679c\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-162985","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162985","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=162985"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162985\/revisions"}],"predecessor-version":[{"id":162986,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162985\/revisions\/162986"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}