{"id":171103,"date":"2024-11-06T23:57:17","date_gmt":"2024-11-06T15:57:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171103\/"},"modified":"2024-11-06T23:57:18","modified_gmt":"2024-11-06T15:57:18","slug":"%e6%99%ae%e9%80%9a%e7%b4%a2%e5%bc%95-pk-%e5%94%af%e4%b8%80%e6%80%a7%e7%b4%a2%e5%bc%95%ef%bc%8c%e7%94%a8%e5%93%aa%e5%80%8b%e5%a5%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171103\/","title":{"rendered":"\u666e\u901a\u7d22\u5f15 PK \u552f\u4e00\u6027\u7d22\u5f15\uff0c\u7528\u54ea\u500b\u597d\uff1f"},"content":{"rendered":"<h1 id=\"%e6%99%ae%e9%80%9a%e7%b4%a2%e5%bc%95%e8%88%87%e5%94%af%e4%b8%80%e6%80%a7%e7%b4%a2%e5%bc%95%ef%bc%9a%e7%94%a8%e5%93%aa%e5%80%8b%e5%a5%bd%ef%bc%9f-mIFGAPSRiG\">\u666e\u901a\u7d22\u5f15\u8207\u552f\u4e00\u6027\u7d22\u5f15\uff1a\u7528\u54ea\u500b\u597d\uff1f<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u500b\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u80fd\u5920\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u7576\u6211\u5011\u8ac7\u5230\u7d22\u5f15\u6642\uff0c\u901a\u5e38\u6703\u9047\u5230\u5169\u7a2e\u4e3b\u8981\u985e\u578b\uff1a\u666e\u901a\u7d22\u5f15\uff08Non-Unique Index\uff09\u548c\u552f\u4e00\u6027\u7d22\u5f15\uff08Unique Index\uff09\u3002\u9019\u5169\u8005\u5404\u6709\u5176\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\uff0c\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5b83\u5011\u7684\u5340\u5225\u3001\u512a\u7f3a\u9ede\u4ee5\u53ca\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u9078\u64c7\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e6%99%ae%e9%80%9a%e7%b4%a2%e5%bc%95%ef%bc%88non-unique-index%ef%bc%89-mIFGAPSRiG\">\u666e\u901a\u7d22\u5f15\uff08Non-Unique Index\uff09<\/h2>\n<p>\u666e\u901a\u7d22\u5f15\u662f\u4e00\u7a2e\u4e0d\u5f37\u5236\u8981\u6c42\u7d22\u5f15\u5217\u7684\u503c\u5fc5\u9808\u552f\u4e00\u7684\u7d22\u5f15\u3002\u9019\u610f\u5473\u8457\u5728\u540c\u4e00\u5217\u4e2d\u53ef\u4ee5\u5b58\u5728\u91cd\u8907\u7684\u503c\u3002\u666e\u901a\u7d22\u5f15\u7684\u4e3b\u8981\u76ee\u7684\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u7bc4\u570d\u67e5\u8a62\u6216\u6392\u5e8f\u6642\u3002<\/p>\n<h3 id=\"%e5%84%aa%e9%bb%9e-mIFGAPSRiG\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\uff1a<\/strong>\u666e\u901a\u7d22\u5f15\u80fd\u5920\u52a0\u901f\u67e5\u8a62\u64cd\u4f5c\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u8cc7\u6599\u8868\u4e2d\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u5141\u8a31\u5728\u7d22\u5f15\u5217\u4e2d\u5b58\u5728\u91cd\u8907\u503c\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u91cd\u8907\u6578\u64da\u7684\u5834\u666f\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-mIFGAPSRiG\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u7121\u6cd5\u4fdd\u8b49\u6578\u64da\u552f\u4e00\u6027\uff1a<\/strong>\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002<\/li>\n<li><strong>\u984d\u5916\u7684\u5b58\u5132\u958b\u92b7\uff1a<\/strong>\u96d6\u7136\u666e\u901a\u7d22\u5f15\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u4f46\u4e5f\u6703\u4f54\u7528\u984d\u5916\u7684\u5b58\u5132\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%94%af%e4%b8%80%e6%80%a7%e7%b4%a2%e5%bc%95%ef%bc%88unique-index%ef%bc%89-mIFGAPSRiG\">\u552f\u4e00\u6027\u7d22\u5f15\uff08Unique Index\uff09<\/h2>\n<p>\u552f\u4e00\u6027\u7d22\u5f15\u5247\u8981\u6c42\u7d22\u5f15\u5217\u7684\u6bcf\u500b\u503c\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u8a72\u5217\u4e2d\u4e0d\u5141\u8a31\u6709\u91cd\u8907\u7684\u503c\u3002\u9019\u7a2e\u7d22\u5f15\u901a\u5e38\u7528\u65bc\u9700\u8981\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u7684\u5834\u666f\uff0c\u4f8b\u5982\u7528\u6236\u540d\u6216\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7b49\u3002<\/p>\n<h3 id=\"%e5%84%aa%e9%bb%9e-mIFGAPSRiG\">\u512a\u9ede<\/h3>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u552f\u4e00\u6027\u7d22\u5f15\u80fd\u5920\u9632\u6b62\u91cd\u8907\u6578\u64da\u7684\u63d2\u5165\uff0c\u78ba\u4fdd\u8cc7\u6599\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<li><strong>\u67e5\u8a62\u6027\u80fd\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u552f\u4e00\u6027\u7d22\u5f15\u7684\u67e5\u8a62\u6027\u80fd\u53ef\u80fd\u512a\u65bc\u666e\u901a\u7d22\u5f15\uff0c\u56e0\u70ba\u8cc7\u6599\u5eab\u53ef\u4ee5\u66f4\u5feb\u5730\u5b9a\u4f4d\u5230\u552f\u4e00\u7684\u503c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%bc%ba%e9%bb%9e-mIFGAPSRiG\">\u7f3a\u9ede<\/h3>\n<ul>\n<li><strong>\u9650\u5236\u6027\uff1a<\/strong>\u552f\u4e00\u6027\u7d22\u5f15\u4e0d\u5141\u8a31\u91cd\u8907\u503c\uff0c\u9019\u5728\u67d0\u4e9b\u61c9\u7528\u4e2d\u53ef\u80fd\u6703\u9020\u6210\u4e0d\u4fbf\u3002<\/li>\n<li><strong>\u6027\u80fd\u5f71\u97ff\uff1a<\/strong>\u5728\u63d2\u5165\u6216\u66f4\u65b0\u64cd\u4f5c\u6642\uff0c\u552f\u4e00\u6027\u7d22\u5f15\u53ef\u80fd\u6703\u589e\u52a0\u984d\u5916\u7684\u6027\u80fd\u958b\u92b7\uff0c\u56e0\u70ba\u8cc7\u6599\u5eab\u9700\u8981\u6aa2\u67e5\u65b0\u503c\u662f\u5426\u5df2\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%81%b8%e6%93%87%e5%bb%ba%e8%ad%b0-mIFGAPSRiG\">\u9078\u64c7\u5efa\u8b70<\/h2>\n<p>\u5728\u9078\u64c7\u4f7f\u7528\u666e\u901a\u7d22\u5f15\u9084\u662f\u552f\u4e00\u6027\u7d22\u5f15\u6642\uff0c\u61c9\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u9700\u6c42\u4f86\u6c7a\u5b9a\u3002\u5982\u679c\u60a8\u7684\u8cc7\u6599\u8868\u4e2d\u67d0\u4e00\u5217\u7684\u6578\u64da\u5fc5\u9808\u4fdd\u6301\u552f\u4e00\u6027\uff0c\u5247\u61c9\u9078\u64c7\u552f\u4e00\u6027\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u901a\u5e38\u9700\u8981\u662f\u552f\u4e00\u7684\uff0c\u56e0\u6b64\u4f7f\u7528\u552f\u4e00\u6027\u7d22\u5f15\u662f\u5408\u9069\u7684\u3002<\/p>\n<p>\u76f8\u53cd\uff0c\u5982\u679c\u60a8\u9700\u8981\u5728\u67d0\u4e00\u5217\u4e2d\u5b58\u5132\u91cd\u8907\u7684\u6578\u64da\uff0c\u4e26\u4e14\u4e3b\u8981\u76ee\u7684\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u90a3\u9ebc\u666e\u901a\u7d22\u5f15\u5c07\u662f\u66f4\u597d\u7684\u9078\u64c7\u3002\u4f8b\u5982\uff0c\u5728\u7522\u54c1\u5206\u985e\u4e2d\uff0c\u53ef\u80fd\u6703\u6709\u591a\u500b\u7522\u54c1\u5c6c\u65bc\u540c\u4e00\u985e\u5225\uff0c\u6b64\u6642\u4f7f\u7528\u666e\u901a\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-mIFGAPSRiG\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0c\u666e\u901a\u7d22\u5f15\u548c\u552f\u4e00\u6027\u7d22\u5f15\u5404\u6709\u5176\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\u3002\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\uff0c\u4e86\u89e3\u9019\u5169\u8005\u7684\u5340\u5225\u53ca\u5176\u512a\u7f3a\u9ede\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u6839\u64da\u5177\u9ad4\u7684\u696d\u52d9\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u7d22\u5f15\u985e\u578b\uff0c\u80fd\u5920\u6709\u6548\u63d0\u9ad8\u8cc7\u6599\u5eab\u7684\u6027\u80fd\u548c\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u666e\u901a\u7d22\u5f15\u9084\u662f\u552f\u4e00\u6027\u7d22\u5f15\uff0c\u6211\u5011\u7684\u5c08\u696d\u5718\u968a\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u6700\u4f73\u7684\u5efa\u8b70\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6bd4\u8f03\u666e\u901a\u7d22\u5f15\u8207PK\u552f\u4e00\u6027\u7d22\u5f15\u7684\u512a\u7f3a\u9ede\uff0c\u5e6b\u52a9\u9078\u64c7\u6700\u9069\u5408\u7684\u7d22\u5f15\u985e\u578b\u4ee5\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-171103","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171103","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=171103"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171103\/revisions"}],"predecessor-version":[{"id":171104,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171103\/revisions\/171104"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}