{"id":200102,"date":"2025-05-06T11:30:10","date_gmt":"2025-05-06T03:30:10","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200102\/"},"modified":"2025-05-06T11:30:10","modified_gmt":"2025-05-06T03:30:10","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e4%bd%bf%e7%94%a8%e8%8c%83%e5%9b%b4%e5%92%8c%e7%89%b9%e6%80%a7%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200102\/","title":{"rendered":"MySQL\u6570\u636e\u5e93\u7684\u4f7f\u7528\u8303\u56f4\u548c\u7279\u6027\u8be6\u89e3"},"content":{"rendered":"

<\/b> <\/p>\n

MySQL\u6570\u636e\u5e93\u7684\u4f7f\u7528\u8303\u56f4\u548c\u7279\u6027\u8be6\u89e3<\/h1>\n

MySQL\u6570\u636e\u5e93\u662f\u4e00\u79cd\u8f7b\u91cf\u7ea7\u3001\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7f51\u7ad9\u5f00\u53d1\u3001\u6570\u636e\u5206\u6790\u3001\u65e5\u5fd7\u7ba1\u7406\u7b49\u9886\u57df\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8MySQL\u5728\u4e0d\u540c\u9886\u57df\u7684\u5177\u4f53\u529f\u80fd\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u5168\u9762\u4e86\u89e3MySQL\u7684\u5e94\u7528\u8303\u56f4\u548c\u7279\u6027\u3002<\/p>\n

MySQL\u6570\u636e\u5e93\u7684\u5e94\u7528\u9886\u57df\u53ca\u529f\u80fd\u4ecb\u7ecd<\/p>\n

MySQL\u6570\u636e\u5e93\u4f5c\u4e3a\u4e00\u79cd\u8f7b\u91cf\u7ea7\u3001\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u4e2a\u9886\u57df\uff0c\u5305\u62ec\u7f51\u7ad9\u5f00\u53d1\u3001\u6570\u636e\u5206\u6790\u3001\u65e5\u5fd7\u7ba1\u7406\u7b49\u591a\u4e2a\u9886\u57df\u3002\u672c\u6587\u5c06\u4ecb\u7ecdMySQL\u6570\u636e\u5e93\u5728\u4e0d\u540c\u5e94\u7528\u9886\u57df\u4e2d\u7684\u5177\u4f53\u529f\u80fd\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

1. \u7f51\u7ad9\u5f00\u53d1<\/strong><\/p>\n

MySQL\u6570\u636e\u5e93\u5728\u7f51\u7ad9\u5f00\u53d1\u4e2d\u626e\u6f14\u7740\u91cd\u8981\u89d2\u8272\uff0c\u7528\u4e8e\u5b58\u50a8\u7f51\u7ad9\u7684\u7528\u6237\u4fe1\u606f\u3001\u6587\u7ae0\u5185\u5bb9\u3001\u8bc4\u8bba\u7b49\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u7528\u6237\u4fe1\u606f\u8868\u7684\u521b\u5efa\u548c\u67e5\u8be2\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

-- \u521b\u5efa\u7528\u6237\u4fe1\u606f\u8868\nCREATE TABLE users (\n    id INT PRIMARY KEY,\n    username VARCHAR(50),\n    email VARCHAR(100)\n);\n\n-- \u63d2\u5165\u7528\u6237\u4fe1\u606f\u8bb0\u5f55\nINSERT INTO users (id, username, email) VALUES (1, 'JohnDoe', 'johndoe@example.com');\n\n-- \u67e5\u8be2\u7528\u6237\u4fe1\u606f\nSELECT * FROM users;<\/pre>\n
2. \u6570\u636e\u5206\u6790<\/strong><\/p>\n
MySQL\u6570\u636e\u5e93\u4e5f\u5e38\u7528\u4e8e\u6570\u636e\u5206\u6790\uff0c\u901a\u8fc7SQL\u67e5\u8be2\u8bed\u8a00\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9\u5927\u91cf\u6570\u636e\u8fdb\u884c\u7b5b\u9009\u3001\u5206\u7ec4\u3001\u7edf\u8ba1\u7b49\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u9500\u552e\u6570\u636e\u7edf\u8ba1\u7684\u4f8b\u5b50\uff1a<\/p>\n
-- \u67e5\u8be2\u6bcf\u4e2a\u6708\u7684\u9500\u552e\u603b\u989d\nSELECT \n    MONTH(date) AS month,\n    SUM(amount) AS total_sales\nFROM sales\nGROUP BY MONTH(date);<\/pre>\n
3. \u65e5\u5fd7\u7ba1\u7406<\/strong><\/p>\n
\u5728\u7cfb\u7edf\u5f00\u53d1\u4e2d\uff0c\u65e5\u5fd7\u8bb0\u5f55\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u73af\uff0c\u800cMySQL\u6570\u636e\u5e93\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u7cfb\u7edf\u4ea7\u751f\u7684\u5404\u7c7b\u65e5\u5fd7\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u65e5\u5fd7\u8868\u7684\u521b\u5efa\u548c\u63d2\u5165\u8bb0\u5f55\u7684\u793a\u4f8b\uff1a<\/p>\n
-- \u521b\u5efa\u65e5\u5fd7\u8868\nCREATE TABLE logs (\n    id INT PRIMARY KEY,\n    time DATETIME,\n    message TEXT\n);\n\n-- \u63d2\u5165\u65e5\u5fd7\u8bb0\u5f55\nINSERT INTO logs (id, time, message) VALUES (1, '2022-01-01 12:00:00', 'An error occurred');\n\n-- \u67e5\u8be2\u6700\u8fd1\u7684\u65e5\u5fd7\u8bb0\u5f55\nSELECT * FROM logs ORDER BY time DESC LIMIT 10;<\/pre>\n
\u603b\u4e4b\uff0cMySQL\u6570\u636e\u5e93\u5728\u5404\u4e2a\u9886\u57df\u4e2d\u90fd\u6709\u7740\u91cd\u8981\u7684\u5e94\u7528\u4ef7\u503c\uff0c\u65e0\u8bba\u662f\u7f51\u7ad9\u5f00\u53d1\u3001\u6570\u636e\u5206\u6790\u8fd8\u662f\u65e5\u5fd7\u7ba1\u7406\uff0c\u90fd\u79bb\u4e0d\u5f00MySQL\u6570\u636e\u5e93\u7684\u652f\u6301\u3002\u901a\u8fc7\u672c\u6587\u4ecb\u7ecd\u7684\u529f\u80fd\u53ca\u4ee3\u7801\u793a\u4f8b\uff0c\u76f8\u4fe1\u8bfb\u8005\u5bf9MySQL\u7684\u5e94\u7528\u9886\u57df\u6709\u4e86\u66f4\u6e05\u6670\u7684\u8ba4\u8bc6\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300aMySQL\u6570\u636e\u5e93\u7684\u4f7f\u7528\u8303\u56f4\u548c\u7279\u6027\u8be6\u89e3\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8emysql,\u5e94\u7528,\u529f\u80fd\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
MySQL\u6570\u636e\u5e93\u7684\u4f7f\u7528\u8303\u56f4\u548c\u7279\u6027...<\/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-200102","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200102","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=200102"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200102\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}