{"id":173105,"date":"2024-11-07T15:43:18","date_gmt":"2024-11-07T07:43:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173105\/"},"modified":"2024-11-07T15:43:19","modified_gmt":"2024-11-07T07:43:19","slug":"%e5%a6%82%e4%bd%95%e6%88%90%e7%82%ba%e4%b8%80%e5%90%8dsql%e9%96%8b%e7%99%bc%e4%ba%ba%e5%93%a1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173105\/","title":{"rendered":"\u5982\u4f55\u6210\u70ba\u4e00\u540dSQL\u958b\u767c\u4eba\u54e1"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%88%90%e7%82%ba%e4%b8%80%e5%90%8dsql%e9%96%8b%e7%99%bc%e4%ba%ba%e5%93%a1-cjsorElByX\">\u5982\u4f55\u6210\u70ba\u4e00\u540dSQL\u958b\u767c\u4eba\u54e1<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u6578\u64da\u5eab\u7ba1\u7406\u548c\u64cd\u4f5c\u7684\u6838\u5fc3\u5de5\u5177\u4e4b\u4e00\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0cSQL\u958b\u767c\u4eba\u54e1\u7684\u9700\u6c42\u6301\u7e8c\u589e\u9577\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6210\u70ba\u4e00\u540dSQL\u958b\u767c\u4eba\u54e1\uff0c\u6db5\u84cb\u6240\u9700\u7684\u6280\u80fd\u3001\u5b78\u7fd2\u8cc7\u6e90\u4ee5\u53ca\u5be6\u8e10\u5efa\u8b70\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3sql%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-cjsorElByX\">1. 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Server\u3002<\/li>\n<li><strong>\u8868\uff08Table\uff09<\/strong>\uff1a\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u4ee5\u8868\u7684\u5f62\u5f0f\u5b58\u5132\uff0c\u6bcf\u500b\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\u3002<\/li>\n<li><strong>\u67e5\u8a62\uff08Query\uff09<\/strong>\uff1a\u4f7f\u7528SQL\u8a9e\u8a00\u4f86\u6aa2\u7d22\u6216\u64cd\u4f5c\u6578\u64da\u7684\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%ad%b8%e7%bf%92sql%e8%aa%9e%e8%a8%80-cjsorElByX\">2. \u5b78\u7fd2SQL\u8a9e\u8a00<\/h2>\n<p>\u5b78\u7fd2SQL\u7684\u6700\u4f73\u65b9\u5f0f\u662f\u901a\u904e\u5be6\u8e10\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- \u5275\u5efa\u4e00\u500b\u540d\u70bausers\u7684\u8868\nCREATE TABLE users (\n    id INT PRIMARY KEY,\n    name VARCHAR(100),\n    email VARCHAR(100)\n);\n\n-- \u63d2\u5165\u6578\u64da\nINSERT INTO users (id, name, email) VALUES (1, '\u5f35\u4e09', 'zhangsan@example.com');\n\n-- \u67e5\u8a62\u6578\u64da\nSELECT * FROM users WHERE id = 1;<\/code><\/pre>\n<p>\u5efa\u8b70\u4f7f\u7528\u5728\u7dda\u5e73\u53f0\u5982Codecademy\u3001LeetCode\u6216W3Schools\u9032\u884cSQL\u7df4\u7fd2\uff0c\u9019\u4e9b\u5e73\u53f0\u63d0\u4f9b\u4e92\u52d5\u5f0f\u7684\u5b78\u7fd2\u74b0\u5883\u3002<\/p>\n<h2 id=\"3-%e6%b7%b1%e5%85%a5%e5%ad%b8%e7%bf%92%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-cjsorElByX\">3. \u6df1\u5165\u5b78\u7fd2\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u9664\u4e86\u5b78\u7fd2SQL\u8a9e\u8a00\u672c\u8eab\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u539f\u5247\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u9019\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6b63\u898f\u5316\uff08Normalization\uff09<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u8a2d\u8a08\u6578\u64da\u5eab\u7684\u6280\u8853\uff0c\u65e8\u5728\u6e1b\u5c11\u6578\u64da\u5197\u9918\u548c\u63d0\u9ad8\u6578\u64da\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff08Indexing\uff09<\/strong>\uff1a\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u5e73\u8861\u4f7f\u7528\u3002<\/li>\n<li><strong>\u95dc\u806f\uff08Relationships\uff09<\/strong>\uff1a\u4e86\u89e3\u5982\u4f55\u5728\u4e0d\u540c\u7684\u8868\u4e4b\u9593\u5efa\u7acb\u95dc\u806f\uff0c\u4f8b\u5982\u4e00\u5c0d\u591a\u548c\u591a\u5c0d\u591a\u95dc\u4fc2\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%af%a6%e8%b8%90%e5%92%8c%e9%a0%85%e7%9b%ae%e7%b6%93%e9%a9%97-cjsorElByX\">4. \u5be6\u8e10\u548c\u9805\u76ee\u7d93\u9a57<\/h2>\n<p>\u5be6\u8e10\u662f\u6210\u70ba\u4e00\u540d\u6210\u529fSQL\u958b\u767c\u4eba\u54e1\u7684\u95dc\u9375\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u65b9\u5f0f\u7372\u5f97\u5be6\u8e10\u7d93\u9a57\uff1a<\/p>\n<ul>\n<li><strong>\u53c3\u52a0\u958b\u6e90\u9805\u76ee<\/strong>\uff1a\u5728GitHub\u4e0a\u5c0b\u627e\u958b\u6e90\u9805\u76ee\uff0c\u8ca2\u737b\u4f60\u7684SQL\u6280\u80fd\u3002<\/li>\n<li><strong>\u5efa\u7acb\u500b\u4eba\u9805\u76ee<\/strong>\uff1a\u8a2d\u8a08\u4e00\u500b\u5c0f\u578b\u6578\u64da\u5eab\u61c9\u7528\u7a0b\u5e8f\uff0c\u4e26\u4f7f\u7528SQL\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u5be6\u7fd2\u6216\u517c\u8077\u5de5\u4f5c<\/strong>\uff1a\u5c0b\u627e\u8207\u6578\u64da\u5eab\u76f8\u95dc\u7684\u5be6\u7fd2\u6a5f\u6703\uff0c\u7372\u5f97\u5be6\u969b\u5de5\u4f5c\u7d93\u9a57\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e6%8c%81%e7%ba%8c%e5%ad%b8%e7%bf%92%e5%92%8c%e9%80%b2%e4%bf%ae-cjsorElByX\">5. 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id=\"%e7%b8%bd%e7%b5%90-cjsorElByX\">\u7e3d\u7d50<\/h2>\n<p>\u6210\u70ba\u4e00\u540dSQL\u958b\u767c\u4eba\u54e1\u9700\u8981\u624e\u5be6\u7684\u57fa\u790e\u77e5\u8b58\u3001\u5be6\u8e10\u7d93\u9a57\u548c\u6301\u7e8c\u5b78\u7fd2\u7684\u614b\u5ea6\u3002\u96a8\u8457\u6578\u64da\u9700\u6c42\u7684\u589e\u52a0\uff0cSQL\u958b\u767c\u4eba\u54e1\u7684\u8077\u696d\u524d\u666f\u975e\u5e38\u5ee3\u95ca\u3002\u5982\u679c\u4f60\u6709\u8208\u8da3\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5229\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u4f60\u7684\u6578\u64da\u5eab\u9805\u76ee\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u4f60\u5728\u6578\u64da\u7ba1\u7406\u4e0a\u53d6\u5f97\u6210\u529f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2SQL\u57fa\u790e\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u53ca\u67e5\u8a62\u6280\u5de7\uff0c\u638c\u63e1\u5be6\u8e10\u7d93\u9a57\uff0c\u6210\u70ba\u4e00\u540d\u5408\u683c\u7684SQL\u958b\u767c\u4eba\u54e1\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-173105","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173105","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=173105"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173105\/revisions"}],"predecessor-version":[{"id":173106,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173105\/revisions\/173106"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}