{"id":200313,"date":"2025-05-06T09:33:09","date_gmt":"2025-05-06T01:33:09","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200313\/"},"modified":"2025-05-06T09:33:09","modified_gmt":"2025-05-06T01:33:09","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e6%9f%a5%e8%af%a2%e6%95%b0%e6%8d%ae%e9%87%8f%e8%bf%87%e5%a4%a7%e8%af%a5%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200313\/","title":{"rendered":"\u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u91cf\u8fc7\u5927\u8be5\u5982\u4f55\u4f18\u5316\uff1f"},"content":{"rendered":"

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

\u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u91cf\u8fc7\u5927\u8be5\u5982\u4f55\u4f18\u5316\uff1f<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u5bf9\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n

<\/p>\n

sql \u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u91cf\u8fc7\u5927<\/strong><\/p>\n

\u5728\u8fdb\u884c\u6570\u636e\u7edf\u8ba1\u65f6\uff0c\u9700\u8981\u67e5\u8be2\u591a\u5f20\u8868\uff0c\u5355\u5f20\u8868\u8bb0\u5f55\u9ad8\u8fbe 200 \u4e07\u6761\u3002\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\u8bed\u53e5\uff1a<\/p>\n

select dt,num,count(*) from\n    (SELECT\n        CONCAT(YEAR (create_time),'\u5e74',WEEK(create_time),'\u5468') dt,\n        COUNT(1) AS num\n    FROM mail_record202108\n    GROUP BY dt,`to` ORDER BY WEEK(create_time))t1\ngroup by num order by dt,num;<\/pre>\n
\u4f46\u662f\uff0c\u7531\u4e8e\u6570\u636e\u91cf\u8fc7\u5927\uff0c\u5bfc\u81f4\u67e5\u8be2\u8d85\u65f6\u3002<\/p>\n
\u89e3\u51b3\u529e\u6cd5<\/strong><\/p>\n
\u4e3a\u4e86\u4f18\u5316\u67e5\u8be2\uff0c\u9700\u8981\u91c7\u53d6\u4ee5\u4e0b\u63aa\u65bd\uff1a<\/p>\n
    \n
  • \u907f\u514d\u4f7f\u7528\u51fd\u6570\uff1a<\/strong>\u51fd\u6570\u4f1a\u8ba9\u7d22\u5f15\u5931\u6548\uff0c\u5bfc\u81f4\u65e0\u6cd5\u5229\u7528\u7d22\u5f15\u52a0\u901f\u67e5\u8be2\u3002\u5c3d\u53ef\u80fd\u5728\u7d22\u5f15\u5217\u4e0a\u5b8c\u6210\u6392\u5e8f\u64cd\u4f5c\u3002<\/li>\n
  • \u5efa\u7acb\u590d\u5408\u7d22\u5f15\uff1a<\/strong>\u5bf9\u4e8e\u591a\u5217\u7d22\u5f15\uff0c\u8981\u5efa\u7acb\u590d\u5408\u7d22\u5f15\uff0c\u56e0\u4e3a mysql \u4e00\u822c\u53ea\u4f1a\u9009\u62e9\u4e00\u4e2a\u7d22\u5f15\u6765\u4f7f\u7528\u3002<\/li>\n
  • \u68c0\u67e5\u6267\u884c\u8ba1\u5212\uff1a<\/strong>\u4f7f\u7528 explain \u67e5\u770b\u6267\u884c\u8ba1\u5212\uff0c\u4e86\u89e3\u67e5\u8be2\u662f\u5982\u4f55\u6267\u884c\u7684\u3002\u6839\u636e\u6267\u884c\u8ba1\u5212\uff0c\u53ef\u4ee5\u9488\u5bf9\u6027\u5730\u8fdb\u884c\u4f18\u5316\u3002<\/li>\n<\/ul>\n
    \u6b64\u5916\uff0c\u8fd8\u9700\u8981\u8003\u8651\u4ee5\u4e0b\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n
      \n
    • \u5206\u533a\u8868\uff1a\u5c06\u6570\u636e\u6309\u65f6\u95f4\u6216\u5176\u4ed6\u7ef4\u5ea6\u8fdb\u884c\u5206\u533a\uff0c\u4ee5\u51cf\u5c11\u67e5\u8be2\u7684\u6570\u636e\u91cf\u3002<\/li>\n
    • \u4f7f\u7528\u5206\u9875\uff1a\u5c06\u67e5\u8be2\u7ed3\u679c\u5206\u4e3a\u591a\u4e2a\u9875\u9762\uff0c\u9010\u9875\u52a0\u8f7d\uff0c\u51cf\u8f7b\u670d\u52a1\u5668\u538b\u529b\u3002<\/li>\n
    • \u4f18\u5316\u670d\u52a1\u5668\u914d\u7f6e\uff1a\u589e\u52a0\u5185\u5b58\u6216 cpu \u8d44\u6e90\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n
      \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u91cf\u8fc7\u5927\u8be5\u5982\u4f55\u4f18\u5316\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
      \n
      \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      \u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u91cf\u8fc7\u5927\u8be5\u5982\u4f55\u4f18\u5316\uff1f...<\/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-200313","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200313","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=200313"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200313\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}