{"id":7095,"date":"2024-11-14T11:16:46","date_gmt":"2024-11-14T03:16:46","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7095\/"},"modified":"2024-11-14T11:16:46","modified_gmt":"2024-11-14T03:16:46","slug":"%e5%a6%82%e4%bd%95%e9%ab%98%e6%95%88%e6%9f%a5%e8%af%a2%e4%b8%a4%e5%bc%a0%e6%97%a0%e7%9b%b4%e6%8e%a5%e5%85%b3%e8%81%94%e5%85%b3%e7%b3%bb%e7%9a%84%e8%a1%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7095\/","title":{"rendered":"\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173043875383335.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6570\u636e\u5e93\u67e5\u8be2\u6548\u7387\u63d0\u5347\u6280\u5de7<\/strong><\/p>\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u67e5\u8be2\u6548\u7387\u81f3\u5173\u91cd\u8981\u3002\u7279\u522b\u662f\u5f53\u8868\u4e4b\u95f4\u5b58\u5728\u5173\u7cfb\u65f6\uff0c\u4e0d\u5f53\u7684\u67e5\u8be2\u8bed\u53e5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7b1b\u5361\u5c14\u79ef\uff0c\u663e\u7740\u964d\u4f4e\u67e5\u8be2\u901f\u5ea6\u3002 <\/p>\n<p>\u5bf9\u4e8e\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n<p>\u5982\u4f55\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\uff0c\u4e14\u6ee1\u8db3\u6761\u4ef6\uff1a\u8868 a \u4e2d\u59d3\u540d\u4e3a\u201c\u5f20\u4e09\u201d\uff0c\u8868 b \u4e2d\u7701\u4efd\u4e3a\u201c\u4e0a\u6d77\u201d\uff1f <\/p>\n<p>\u793a\u4f8b sql \u8bed\u53e5\uff1a<\/p>\n<pre>select * from a\u8868, b\u8868 where a.name = '\u5f20\u4e09' and b.\u7701\u4efd = '\u4e0a\u6d77'<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5982\u679c\u6761\u4ef6\u4e3a\u7a7a\uff0c\u5219\u4f1a\u4ea7\u751f\u7b1b\u5361\u5c14\u79ef\u95ee\u9898\uff0c\u5bfc\u81f4\u6d77\u91cf\u6570\u636e\u3002 <\/p>\n<p>\u89e3\u51b3\u65b9\u6848\u4e4b\u4e00\uff1a\u5229\u7528\u7b2c\u4e09\u5f20\u8868 c\uff0c\u8be5\u8868\u4e0e a\u3001b \u90fd\u5b58\u5728\u5173\u8054\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<pre>select a.*, b.*\nfrom c\n  inner join a on c.nid = a.id\n  inner join b on c.sid = b.id\nwhere a.name = '\u5f20\u4e09' and b.\u7701\u4efd = '\u4e0a\u6d77'<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e0a\u8ff0\u67e5\u8be2\u901a\u8fc7\u5148\u5173\u8054 a \u548c c\uff0c\u518d\u5173\u8054 b\uff0c\u907f\u514d\u4e86\u7b1b\u5361\u5c14\u79ef\u3002 <\/p>\n<p>\u53e6\u5916\uff0c\u7531\u4e8e c \u548c a\u3001b \u90fd\u662f\u591a\u5bf9\u4e00\u5173\u7cfb\uff0c\u8fd8\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u67e5\u8be2\uff1a<\/p>\n<pre>select a.*, b.\u7701\u4efd\nfrom (\n  select a.*, c.sid\n  from a inner join c on a.id = c.nid\n  where a.name = '\u5f20\u4e09'\n) x\ninner join b on b.id = x.sid\nwhere b.\u7701\u4efd = '\u4e0a\u6d77'<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6837\u53ef\u4ee5\u7b80\u5316\u67e5\u8be2\uff0c\u63d0\u9ad8\u6548\u7387\u3002 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u9ad8\u6548\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\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>\u6570\u636e\u5e93\u67e5\u8be2\u6548\u7387\u63d0\u5347\u6280\u5de7 \u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u67e5\u8be2\u6548\u7387\u81f3\u5173\u91cd\u8981\u3002\u7279\u522b\u662f\u5f53\u8868\u4e4b\u95f4\u5b58\u5728\u5173\u7cfb\u65f6\uff0c\u4e0d\u5f53\u7684\u67e5\u8be2\u8bed\u53e5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7b1b\u5361\u5c14\u79ef\uff0c\u663e\u7740\u964d\u4f4e\u67e5\u8be2\u901f\u5ea6\u3002 \u5bf9\u4e8e\u4ee5\u4e0b\u95ee\u9898\uff1a \u5982\u4f55\u67e5\u8be2\u4e24\u5f20\u65e0\u76f4\u63a5\u5173\u8054\u5173\u7cfb\u7684\u8868\uff0c\u4e14\u6ee1\u8db3\u6761\u4ef6\uff1a\u8868 a \u4e2d\u59d3\u540d\u4e3a\u201c\u5f20\u4e09\u201d\uff0c\u8868 b \u4e2d\u7701\u4efd\u4e3a\u201c\u4e0a\u6d77\u201d\uff1f \u793a\u4f8b sql \u8bed\u53e5\uff1a select * from a\u8868, b\u8868 where a.name = &#8216;\u5f20\u4e09&#8217; and b.\u7701\u4efd = &#8216;\u4e0a\u6d77&#8217; \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u6761\u4ef6\u4e3a\u7a7a\uff0c\u5219\u4f1a\u4ea7\u751f\u7b1b\u5361\u5c14\u79ef\u95ee\u9898\uff0c\u5bfc\u81f4\u6d77\u91cf\u6570\u636e\u3002 \u89e3\u51b3\u65b9\u6848\u4e4b\u4e00\uff1a\u5229\u7528\u7b2c\u4e09\u5f20\u8868 c\uff0c\u8be5\u8868\u4e0e a\u3001b \u90fd\u5b58\u5728\u5173\u8054\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u67e5\u8be2\uff1a select a.*, b.* from c inner join a on c.nid = a.id inner join b on c.sid = b.id where a.name = &#8216;\u5f20\u4e09&#8217; and b.\u7701\u4efd [&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-7095","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7095","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=7095"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7095\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7095"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}