{"id":6776,"date":"2024-11-14T10:31:16","date_gmt":"2024-11-14T02:31:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6776\/"},"modified":"2024-11-14T10:31:16","modified_gmt":"2024-11-14T02:31:16","slug":"%e5%a6%82%e4%bd%95%e6%89%be%e5%87%ba%e5%9c%a8%e7%89%b9%e5%ae%9a%e6%97%a5%e6%9c%9f%e5%86%85%e5%a7%8b%e7%bb%88%e6%9c%89%e5%ba%93%e5%ad%98%e7%9a%84%e5%95%86%e5%ba%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6776\/","title":{"rendered":"\u5982\u4f55\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/172991865774455.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u627e\u51fa\u5df2\u77e5\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97<\/strong><\/p>\n<p>\u6211\u4eec\u6709\u4e00\u4e2a\u8868\u683c\uff0c\u5176\u4e2d\u8bb0\u5f55\u4e86\u5546\u5e97\u3001\u65e5\u671f\u548c\u5546\u54c1\u5e93\u5b58\u4fe1\u606f\u3002\u73b0\u5728\uff0c\u6211\u4eec\u9700\u8981\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\uff089 \u6708 1 \u65e5\u30012 \u65e5\u548c 3 \u65e5\uff09\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 sql \u67e5\u8be2\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u601d\u8def\uff1a<\/p>\n<ol>\n<li> <strong>\u4f7f\u7528 union \u5b50\u67e5\u8be2\u521b\u5efa\u4e00\u5f20\u4e34\u65f6\u8868\uff1a<\/strong>\u5bf9\u4e8e\u6bcf\u4e2a\u9700\u8981\u68c0\u67e5\u7684\u65e5\u671f\uff0c\u521b\u5efa\u4e00\u4e2a\u5b50\u67e5\u8be2\u4ee5\u8fd4\u56de\u5546\u5e97\u5217\u8868\u3002\u7136\u540e\uff0c\u4f7f\u7528 union \u64cd\u4f5c\u7b26\u5c06\u8fd9\u4e9b\u5b50\u67e5\u8be2\u7684\u7ed3\u679c\u5408\u5e76\u5230\u4e00\u5f20\u4e34\u65f6\u8868\u4e2d\u3002<\/li>\n<li> <strong>\u5bf9\u5546\u5e97\u8fdb\u884c\u5206\u7ec4\u8ba1\u6570\uff1a<\/strong>\u4f7f\u7528 group by \u5b50\u53e5\u6309\u5546\u5e97\u5206\u7ec4\u4e34\u65f6\u8868\u4e2d\u7684\u8bb0\u5f55\u3002\u7136\u540e\uff0c\u4f7f\u7528 count(distinct \u65e5\u671f) \u51fd\u6570\u8ba1\u7b97\u6bcf\u4e2a\u5546\u5e97\u5728\u4e0d\u540c\u65e5\u671f\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/li>\n<li> <strong>\u7b5b\u9009\u8ba1\u6570\u7b49\u4e8e\u65e5\u671f\u6570\u91cf\u7684\u5546\u5e97\uff1a<\/strong>\u4f7f\u7528 having \u5b50\u53e5\u8fc7\u6ee4\u7ed3\u679c\uff0c\u4ec5\u4fdd\u7559\u8ba1\u6570\u7b49\u4e8e\u68c0\u67e5\u65e5\u671f\u6570\u91cf\uff08\u5728\u672c\u4f8b\u4e2d\u4e3a 3\uff09\u7684\u5546\u5e97\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u67e5\u8be2\uff1a<\/p>\n<pre>SELECT DISTINCT \u5546\u5e97\nFROM (\n    SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f='2021-09-01'\n    UNION\n    SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f='2021-09-02'\n    UNION\n    SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f='2021-09-03'\n) AS tab\nGROUP BY \u5546\u5e97\nHAVING COUNT(DISTINCT \u65e5\u671f)=3;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u4e2a\u67e5\u8be2\u5c06\u8fd4\u56de 9 \u6708 1 \u65e5\u30012 \u65e5\u548c 3 \u65e5\u90fd\u6709\u5e93\u5b58\u7684\u5546\u5e97\u5217\u8868\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\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>\u5982\u4f55\u627e\u51fa\u5df2\u77e5\u65e5\u671f\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97 \u6211\u4eec\u6709\u4e00\u4e2a\u8868\u683c\uff0c\u5176\u4e2d\u8bb0\u5f55\u4e86\u5546\u5e97\u3001\u65e5\u671f\u548c\u5546\u54c1\u5e93\u5b58\u4fe1\u606f\u3002\u73b0\u5728\uff0c\u6211\u4eec\u9700\u8981\u627e\u51fa\u5728\u7279\u5b9a\u65e5\u671f\uff089 \u6708 1 \u65e5\u30012 \u65e5\u548c 3 \u65e5\uff09\u5185\u59cb\u7ec8\u6709\u5e93\u5b58\u7684\u5546\u5e97\u3002 \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 sql \u67e5\u8be2\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u601d\u8def\uff1a \u4f7f\u7528 union \u5b50\u67e5\u8be2\u521b\u5efa\u4e00\u5f20\u4e34\u65f6\u8868\uff1a\u5bf9\u4e8e\u6bcf\u4e2a\u9700\u8981\u68c0\u67e5\u7684\u65e5\u671f\uff0c\u521b\u5efa\u4e00\u4e2a\u5b50\u67e5\u8be2\u4ee5\u8fd4\u56de\u5546\u5e97\u5217\u8868\u3002\u7136\u540e\uff0c\u4f7f\u7528 union \u64cd\u4f5c\u7b26\u5c06\u8fd9\u4e9b\u5b50\u67e5\u8be2\u7684\u7ed3\u679c\u5408\u5e76\u5230\u4e00\u5f20\u4e34\u65f6\u8868\u4e2d\u3002 \u5bf9\u5546\u5e97\u8fdb\u884c\u5206\u7ec4\u8ba1\u6570\uff1a\u4f7f\u7528 group by \u5b50\u53e5\u6309\u5546\u5e97\u5206\u7ec4\u4e34\u65f6\u8868\u4e2d\u7684\u8bb0\u5f55\u3002\u7136\u540e\uff0c\u4f7f\u7528 count(distinct \u65e5\u671f) \u51fd\u6570\u8ba1\u7b97\u6bcf\u4e2a\u5546\u5e97\u5728\u4e0d\u540c\u65e5\u671f\u51fa\u73b0\u7684\u6b21\u6570\u3002 \u7b5b\u9009\u8ba1\u6570\u7b49\u4e8e\u65e5\u671f\u6570\u91cf\u7684\u5546\u5e97\uff1a\u4f7f\u7528 having \u5b50\u53e5\u8fc7\u6ee4\u7ed3\u679c\uff0c\u4ec5\u4fdd\u7559\u8ba1\u6570\u7b49\u4e8e\u68c0\u67e5\u65e5\u671f\u6570\u91cf\uff08\u5728\u672c\u4f8b\u4e2d\u4e3a 3\uff09\u7684\u5546\u5e97\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u67e5\u8be2\uff1a SELECT DISTINCT \u5546\u5e97 FROM ( SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f=&#8217;2021-09-01&#8242; UNION SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f=&#8217;2021-09-02&#8242; UNION SELECT \u5546\u5e97 FROM \u8868 WHERE \u65e5\u671f=&#8217;2021-09-03&#8242; ) AS [&hellip;]<\/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-6776","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6776","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=6776"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6776\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}