{"id":7807,"date":"2024-11-14T11:08:34","date_gmt":"2024-11-14T03:08:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7807\/"},"modified":"2024-11-14T11:08:34","modified_gmt":"2024-11-14T03:08:34","slug":"mysql%e6%97%a5%e6%9c%9f%e5%8c%b9%e9%85%8d%ef%bc%9a%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%e9%9a%8f%e6%9c%ba%e6%9c%88%e4%bb%bd%e6%95%b0%e6%8d%ae%e6%9f%a5%e8%af%a2%e9%97%ae%e9%a2%98%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7807\/","title":{"rendered":"MySQL\u65e5\u671f\u5339\u914d\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u6708\u4efd\u6570\u636e\u67e5\u8be2\u95ee\u9898\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173124452570989.jpg\" class=\"aligncenter\" title=\"MySQL\u65e5\u671f\u5339\u914d\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u6708\u4efd\u6570\u636e\u67e5\u8be2\u95ee\u9898\uff1f\u63d2\u56fe\" alt=\"MySQL\u65e5\u671f\u5339\u914d\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u6708\u4efd\u6570\u636e\u67e5\u8be2\u95ee\u9898\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u4f7f\u7528with\u89e3\u51b3\u65e5\u671f\u5339\u914d\u53ca\u968f\u673a\u6708\u4efd\u95ee\u9898<\/strong><\/p>\n<p>\u539f\u59cbsql\u9047\u5230\u8be1\u5f02\u60c5\u51b5\uff0c\u67e5\u8be2\u4e0d\u5230\u9884\u671f\u7684\u968f\u673a\u6708\u4efd\u6570\u636e\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0cmysql 8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u6cd5\uff1a\u4f7f\u7528with\u8bed\u53e5\u3002<\/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> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u7136\u800c\uff0c\u66f4\u597d\u7684\u89e3\u51b3\u65b9\u6848\u662f\uff1a<\/p>\n<ol>\n<li> <strong>\u4ee3\u7801\u751f\u6210\u67e5\u8be2\u6761\u4ef6<\/strong>\uff1a\u5728\u4ee3\u7801\u4e2d\u751f\u6210\u968f\u673a\u6708\u4efd\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u3002<\/li>\n<li> <strong>\u907f\u514d\u4f7f\u7528\u51fd\u6570\u7d22\u5f15<\/strong>\uff1adate_format()\u4f1a\u963b\u6b62\u7d22\u5f15\u4f7f\u7528\uff0c\u5bfc\u81f4\u67e5\u8be2\u53d8\u6162\u3002\u5982\u679c\u6570\u636e\u91cf\u5927\uff0c\u5efa\u8bae\u5916\u90e8\u4f20\u5165\u65e5\u671f\u53c2\u6570\u5e76\u4f7f\u7528between\u6761\u4ef6\u3002<\/li>\n<\/ol>\n<pre>select *\nfrom teacher\nwhere create_time between '2024-01-01 00:00:00' and '2024-01-31 23:59:59'<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ol>\n<li> <strong>\u521b\u5efa\u7d22\u5f15<\/strong>\uff1a\u4e3acreate_time\u5217\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ol>\n<pre>alter table teacher add index (create_time);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u51b3mysql\u4e2d\u7684\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u95ee\u9898\uff0c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fMySQL\u65e5\u671f\u5339\u914d\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u6708\u4efd\u6570\u636e\u67e5\u8be2\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":"<p>\u4f7f\u7528with\u89e3\u51b3\u65e5\u671f\u5339\u914d\u53ca\u968f\u673a\u6708\u4efd\u95ee\u9898 \u539f\u59cbsql\u9047\u5230\u8be1\u5f02\u60c5\u51b5\uff0c\u67e5\u8be2\u4e0d\u5230\u9884\u671f\u7684\u968f\u673a\u6708\u4efd\u6570\u636e\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0cmysql 8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u6cd5\uff1a\u4f7f\u7528with\u8bed\u53e5\u3002 with mo1 as (select date_format(date_add(&#8216;2023-11-01&#8217;, interval floor(rand() * datediff(curdate(), &#8216;2023-11-01&#8217;)) day), &#8216;%y-%m&#8217;) as month) select * from teacher join mo1 on mo1.month = date_format(create_time, &#8216;%y-%m&#8217;) \u767b\u5f55\u540e\u590d\u5236 \u7136\u800c\uff0c\u66f4\u597d\u7684\u89e3\u51b3\u65b9\u6848\u662f\uff1a \u4ee3\u7801\u751f\u6210\u67e5\u8be2\u6761\u4ef6\uff1a\u5728\u4ee3\u7801\u4e2d\u751f\u6210\u968f\u673a\u6708\u4efd\uff0c\u800c\u4e0d\u662f\u4f7f\u7528\u3002 \u907f\u514d\u4f7f\u7528\u51fd\u6570\u7d22\u5f15\uff1adate_format()\u4f1a\u963b\u6b62\u7d22\u5f15\u4f7f\u7528\uff0c\u5bfc\u81f4\u67e5\u8be2\u53d8\u6162\u3002\u5982\u679c\u6570\u636e\u91cf\u5927\uff0c\u5efa\u8bae\u5916\u90e8\u4f20\u5165\u65e5\u671f\u53c2\u6570\u5e76\u4f7f\u7528between\u6761\u4ef6\u3002 select * from teacher where create_time between &#8216;2024-01-01 00:00:00&#8217; and &#8216;2024-01-31 23:59:59&#8217; \u767b\u5f55\u540e\u590d\u5236 \u521b\u5efa\u7d22\u5f15\uff1a\u4e3acreate_time\u5217\u521b\u5efa\u7d22\u5f15\u3002 alter table teacher add index (create_time); \u767b\u5f55\u540e\u590d\u5236 \u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u51b3mysql\u4e2d\u7684\u65e5\u671f\u5339\u914d\u548c\u968f\u673a\u6708\u4efd\u95ee\u9898\uff0c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002 \u4ee5\u4e0a\u5c31\u662fMySQL\u65e5\u671f\u5339\u914d\uff1a\u5982\u4f55\u89e3\u51b3\u968f\u673a\u6708\u4efd\u6570\u636e\u67e5\u8be2\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},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7807","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7807","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=7807"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7807\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7807"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7807"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7807"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}