{"id":7794,"date":"2024-11-14T17:04:33","date_gmt":"2024-11-14T09:04:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7794\/"},"modified":"2024-11-14T17:04:33","modified_gmt":"2024-11-14T09:04:33","slug":"mysql%e6%97%a5%e6%9c%9f%e5%8c%b9%e9%85%8d%e5%92%8c%e9%9a%8f%e6%9c%ba%e6%9c%88%e4%bb%bd%e6%9f%a5%e8%af%a2%ef%bc%9a%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%e9%9a%8f%e6%9c%ba%e5%87%bd%e6%95%b0%e5%af%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7794\/","title":{"rendered":"MySQL\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u67e5\u8be2\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u51fd\u6570\u5bfc\u81f4\u7ed3\u679c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff1f"},"content":{"rendered":"

\"MySQL\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u67e5\u8be2\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u51fd\u6570\u5bfc\u81f4\u7ed3\u679c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff1f\u63d2\u56fe\"<\/p>\n

MySQL\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u67e5\u8be2\u96be\u9898<\/strong><\/p>\n

\u4f60\u7684SQL\u67e5\u8be2 `<\/p>\n

SELECT *<br>FROM teacher<br>WHERE DATE_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
  \u767b\u5f55\u540e\u590d\u5236  ` \u610f\u56fe\u4ece\u7ed9\u5b9a\u6708\u4efd\u5230\u73b0\u5728\u7684\u65f6\u95f4\u6bb5\u5185\u968f\u673a\u67e5\u8be2\u67d0\u4e2a\u6708\u7684\u6570\u636e\uff0c\u4f46\u8fd4\u56de\u7684\u7ed3\u679c\u5374\u6709\u51fa\u5165\u3002 <\/p>\n
\u95ee\u9898\u6839\u6e90<\/strong><\/p>\n
\u95ee\u9898\u5728\u4e8eSQL\u8bed\u53e5\u4e2d\u7684RAND()\u51fd\u6570\u3002\u5b83\u5728\u6bcf\u4e00\u6b21WHERE\u67e5\u8be2\u65f6\u90fd\u4f1a\u91cd\u65b0\u6267\u884c\uff0c\u5bfc\u81f4\u968f\u673a\u65e5\u671f\u8303\u56f4\u6bcf\u6b21\u90fd\u4e0d\u540c\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u67e5\u8be2\u7ed3\u679c\u5c31\u96be\u4ee5\u9884\u6d4b\u3002<\/p>\n
\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n
\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u65b9\u6cd5\u662f\u5728MySQL 8\u4e2d\u4f7f\u7528WITH\u8bed\u53e5\uff0c\u5c06RAND()\u51fd\u6570\u7684\u6267\u884c\u9650\u5236\u4e3a\u4e00\u6b21\u3002\u4fee\u6539\u540e\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n
`<\/p>\n
WITH mo1 AS (<br>  SELECT DATE_FORMAT(DATE_ADD('2023-11-01', INTERVAL FLOOR(RAND() * DATEDIFF(CURDATE(), '2023-11-01')) DAY), '%Y-%m') AS month<br>)<br>SELECT *<br>FROM teacher<br>JOIN mo1 ON mo1.month = DATE_FORMAT(create_time, '%Y-%m');<br><\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236  ` <\/p>\n
\u4f18\u5316\u5efa\u8bae<\/strong><\/p>\n
\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u4ecd\u6709\u6539\u8fdb\u7684\u7a7a\u95f4\uff1a<\/p>\n
    \n
  • \u5c06\u52a8\u6001\u751f\u6210\u7684\u65e5\u671f\u8303\u56f4\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165SQL\u8bed\u53e5\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5199\u5728SQL\u8bed\u53e5\u4e2d\uff0c\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n
  • \u907f\u514d\u4f7f\u7528DATE_FORMAT()\u51fd\u6570\u5bf9\u67e5\u8be2\u5217\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5f71\u54cdMySQL\u4f7f\u7528\u7d22\u5f15\u7684\u80fd\u529b\u3002\u8f6c\u800c\u4f7f\u7528\u5916\u90e8\u4f20\u5165\u7684\u53c2\u6570\u5bf9\u65e5\u671f\u8fdb\u884c\u683c\u5f0f\u5316\u6216\u76f4\u63a5\u4f7f\u7528BETWEEN\u67e5\u8be2\u4f1a\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fMySQL\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u67e5\u8be2\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u51fd\u6570\u5bfc\u81f4\u7ed3\u679c\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    MySQL\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u67e5\u8be2\u96be\u9898 \u4f60\u7684SQL\u67e5\u8be2 ` SELECT *<br>FROM teacher<br>WHERE DATE_FORMAT(DATE_ADD(‘2023-11-01’, INTERVAL FLOOR(RAND() * DATEDIFF(CURDATE(), ‘2023-11-01’)) DAY), ‘%Y-%m’) = DATE_FORMAT(create_time, ‘%Y-%m’); \u767b\u5f55\u540e\u590d\u5236 ` \u610f\u56fe\u4ece\u7ed9\u5b9a\u6708\u4efd\u5230\u73b0\u5728\u7684\u65f6\u95f4\u6bb5\u5185\u968f\u673a\u67e5\u8be2\u67d0\u4e2a\u6708\u7684\u6570\u636e\uff0c\u4f46\u8fd4\u56de\u7684\u7ed3\u679c\u5374\u6709\u51fa\u5165\u3002 \u95ee\u9898\u6839\u6e90 \u95ee\u9898\u5728\u4e8eSQL\u8bed\u53e5\u4e2d\u7684RAND()\u51fd\u6570\u3002\u5b83\u5728\u6bcf\u4e00\u6b21WHERE\u67e5\u8be2\u65f6\u90fd\u4f1a\u91cd\u65b0\u6267\u884c\uff0c\u5bfc\u81f4\u968f\u673a\u65e5\u671f\u8303\u56f4\u6bcf\u6b21\u90fd\u4e0d\u540c\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u67e5\u8be2\u7ed3\u679c\u5c31\u96be\u4ee5\u9884\u6d4b\u3002 \u89e3\u51b3\u65b9\u6848 \u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u65b9\u6cd5\u662f\u5728MySQL 8\u4e2d\u4f7f\u7528WITH\u8bed\u53e5\uff0c\u5c06RAND()\u51fd\u6570\u7684\u6267\u884c\u9650\u5236\u4e3a\u4e00\u6b21\u3002\u4fee\u6539\u540e\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a ` WITH mo1 AS (<br> SELECT DATE_FORMAT(DATE_ADD(‘2023-11-01’, INTERVAL FLOOR(RAND() * DATEDIFF(CURDATE(), ‘2023-11-01’)) DAY), ‘%Y-%m’) AS month<br>)<br>SELECT *<br>FROM teacher<br>JOIN mo1 ON mo1.month = DATE_FORMAT(create_time, ‘%Y-%m’);<br> \u767b\u5f55\u540e\u590d\u5236 ` \u4f18\u5316\u5efa\u8bae \u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898\uff0c\u4f46\u4ecd\u6709\u6539\u8fdb\u7684\u7a7a\u95f4\uff1a \u5c06\u52a8\u6001\u751f\u6210\u7684\u65e5\u671f\u8303\u56f4\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165SQL\u8bed\u53e5\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5199\u5728SQL\u8bed\u53e5\u4e2d\uff0c\u8fd9\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002 \u907f\u514d\u4f7f\u7528DATE_FORMAT()\u51fd\u6570\u5bf9\u67e5\u8be2\u5217\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5f71\u54cdMySQL\u4f7f\u7528\u7d22\u5f15\u7684\u80fd\u529b\u3002\u8f6c\u800c\u4f7f\u7528\u5916\u90e8\u4f20\u5165\u7684\u53c2\u6570\u5bf9\u65e5\u671f\u8fdb\u884c\u683c\u5f0f\u5316\u6216\u76f4\u63a5\u4f7f\u7528BETWEEN\u67e5\u8be2\u4f1a\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7794","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=7794"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7794\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}