{"id":200979,"date":"2025-05-06T14:05:03","date_gmt":"2025-05-06T06:05:03","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200979\/"},"modified":"2025-05-06T14:05:03","modified_gmt":"2025-05-06T06:05:03","slug":"mysql-%e6%97%a5%e6%9c%9f%e6%af%94%e8%be%83%e5%92%8c%e9%9a%8f%e6%9c%ba%e6%9c%88%e4%bb%bd%e7%9a%84%e5%9b%b0%e6%83%91%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e6%88%91%e7%9a%84-sql-%e6%9f%a5%e8%af%a2%e7%bb%93","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200979\/","title":{"rendered":"MySQL \u65e5\u671f\u6bd4\u8f83\u548c\u968f\u673a\u6708\u4efd\u7684\u56f0\u60d1\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684 SQL \u67e5\u8be2\u7ed3\u679c\u603b\u662f\u53d8\u5316\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u65e5\u671f\u6bd4\u8f83\u548c\u968f\u673a\u6708\u4efd\u7684\u56f0\u60d1\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684 SQL \u67e5\u8be2\u7ed3\u679c\u603b\u662f\u53d8\u5316\uff1f<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u4e3b\u8981\u8bb2\u89e3\u4e86\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u4e3b\u673a\u5b9d\u8d1d\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241124\/173241275667428554a6aa8.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u795e\u79d8\u7684 mysql \u5339\u914d\u95ee\u9898\uff1a\u63ed\u79d8\u65e5\u671f\u6bd4\u8f83\u548c\u968f\u673a\u6708\u4efd<\/strong><\/p>\n<p>\u5728 mysql \u4e2d\uff0c\u4e00\u5219\u8be1\u5f02\u7684 sql \u67e5\u8be2\u5f15\u8d77\u4e86\u56f0\u6270\uff1a<\/p>\n<pre>select *\nfrom  teacher\nwhere \ndate_format(date_add('2023-11-01',interval floor(rand() * datediff (curdate(), '2023-11-01')) day),'%y-%m') = date_format(create_time, '%y-%m');<\/pre>\n<p>\u76ee\u6807\u662f\u67e5\u8be2\u4ece\u7ed9\u5b9a\u6708\u4efd\u5230\u73b0\u5728\u7684\u65f6\u95f4\u6bb5\u5185\uff0c\u968f\u673a\u9009\u53d6\u67d0\u4e2a\u6708\u7684\u6570\u636e\u3002\u7136\u800c\uff0c\u7ed3\u679c\u5374\u4ee4\u4eba\u7591\u60d1\u3002<\/p>\n<p>\u95ee\u9898\u6839\u6e90\u5728\u4e8e\u968f\u673a\u6708\u4efd\u90e8\u5206\u7684 sql \u8bed\u53e5\u3002\u6bcf\u6b21\u6267\u884c\u67e5\u8be2\u65f6\uff0crand \u51fd\u6570\u90fd\u4f1a\u91cd\u65b0\u8ba1\u7b97\uff0c\u5bfc\u81f4\u6bcf\u6b21\u968f\u673a\u6708\u4efd\u4e0d\u540c\u3002\u4e3a\u4e86\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u5229\u7528 mysql 8 \u7684 with \u8bed\u53e5\uff1a<\/p>\n<pre>with mo1 as (select DATE_FORMAT(DATE_ADD('2023-11-01', INTERVAL FLOOR(RAND() * DATEDIFF(CURDATE(), '2023-11-01')) DAY),\n                                '%Y-%m') as month)\n\nSELECT *\nFROM teacher\n         join mo1 on mo1.month = DATE_FORMAT(create_time, '%Y-%m')<\/pre>\n<p>\u867d\u7136\u8fd9\u89e3\u51b3\u4e86\u95ee\u9898\uff0c\u4f46\u8fd8\u6709\u66f4\u4f18\u5316\u7684\u65b9\u6848\uff1a<\/p>\n<ul>\n<li><strong>\u907f\u514d\u4f7f\u7528\u51fd\u6570\u7d22\u5f15\uff1a<\/strong>\u51fd\u6570\u7d22\u5f15\u7684\u6027\u80fd\u5e76\u4e0d\u7406\u60f3\uff0c\u4e0d\u5982\u76f4\u63a5\u4e3a create_time \u5217\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5916\u90e8\u53c2\u6570\uff1a<\/strong>\u5c06\u968f\u673a\u6708\u4efd\u4f5c\u4e3a\u5916\u90e8\u53c2\u6570\u4f20\u5165\uff0c\u800c\u4e0d\u662f\u5728 sql \u8bed\u53e5\u4e2d\u8ba1\u7b97\u3002<\/li>\n<li><strong>\u4f7f\u7528 between \u6bd4\u8f83\uff1a<\/strong>\u5c06\u521b\u5efa\u65e5\u671f\u8303\u56f4\u8865\u5168\uff0c\u4f7f\u7528 between \u6bd4\u8f83\uff0c\u5e76\u4e3a create_time \u5217\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8 mysql \u67e5\u8be2\u6548\u7387\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u56f0\u60d1\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aMySQL \u65e5\u671f\u6bd4\u8f83\u548c\u968f\u673a\u6708\u4efd\u7684\u56f0\u60d1\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684 SQL \u67e5\u8be2\u7ed3\u679c\u603b\u662f\u53d8\u5316\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u65e5\u671f\u6bd4\u8f83\u548c\u968f\u673a\u6708\u4efd\u7684&#46;&#46;&#46;<\/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-200979","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200979","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=200979"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200979\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}