{"id":144061,"date":"2024-11-01T04:01:17","date_gmt":"2024-10-31T20:01:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/144061\/"},"modified":"2024-11-01T04:01:18","modified_gmt":"2024-10-31T20:01:18","slug":"sql-%e6%9b%bf%e6%8f%9b%e8%aa%9e%e5%8f%a5%e8%aa%9e%e6%b3%95%e8%aa%aa%e6%98%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/144061\/","title":{"rendered":"SQL \u66ff\u63db\u8a9e\u53e5\u8a9e\u6cd5\u8aaa\u660e"},"content":{"rendered":"<h1 id=\"sql-%e6%9b%bf%e6%8f%9b%e8%aa%9e%e5%8f%a5%e8%aa%9e%e6%b3%95%e8%aa%aa%e6%98%8e-kVgDCCoSWK\">SQL \u66ff\u63db\u8a9e\u53e5\u8a9e\u6cd5\u8aaa\u660e<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u64cd\u4f5c\u548c\u67e5\u8a62\u8cc7\u6599\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u66ff\u63db\u8a9e\u53e5\uff08REPLACE\uff09\u662f SQL \u4e2d\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u8cc7\u6599\u8868\u4e2d\u66f4\u65b0\u8cc7\u6599\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39 SQL \u66ff\u63db\u8a9e\u53e5\u7684\u8a9e\u6cd5\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"replace-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-kVgDCCoSWK\">REPLACE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>REPLACE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>REPLACE INTO \u8868\u540d (\u6b04\u4f4d1, \u6b04\u4f4d2, ...) VALUES (\u503c1, \u503c2, ...);<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<strong>\u8868\u540d<\/strong> \u662f\u4f60\u8981\u64cd\u4f5c\u7684\u8cc7\u6599\u8868\u540d\u7a31\uff0c<strong>\u6b04\u4f4d<\/strong> \u662f\u4f60\u8981\u66f4\u65b0\u7684\u6b04\u4f4d\u540d\u7a31\uff0c\u800c<strong>\u503c<\/strong> \u662f\u4f60\u8981\u63d2\u5165\u6216\u66ff\u63db\u7684\u8cc7\u6599\u3002<\/p>\n<h2 id=\"replace-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-kVgDCCoSWK\">REPLACE \u8a9e\u53e5\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>REPLACE \u8a9e\u53e5\u7684\u5de5\u4f5c\u539f\u7406\u985e\u4f3c\u65bc INSERT \u8a9e\u53e5\uff0c\u4f46\u6709\u4e00\u500b\u91cd\u8981\u7684\u5340\u5225\uff1a\u5982\u679c\u8cc7\u6599\u8868\u4e2d\u5df2\u7d93\u5b58\u5728\u5177\u6709\u76f8\u540c\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u7684\u8a18\u9304\uff0cREPLACE \u8a9e\u53e5\u6703\u5148\u522a\u9664\u8a72\u8a18\u9304\uff0c\u7136\u5f8c\u63d2\u5165\u65b0\u7684\u8a18\u9304\u3002\u9019\u610f\u5473\u8457\uff0cREPLACE \u8a9e\u53e5\u53ef\u4ee5\u7528\u4f86\u66f4\u65b0\u73fe\u6709\u7684\u8a18\u9304\uff0c\u6216\u8005\u5728\u8a18\u9304\u4e0d\u5b58\u5728\u6642\u63d2\u5165\u65b0\u8a18\u9304\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-kVgDCCoSWK\">\u7bc4\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <strong>users<\/strong> \u7684\u8cc7\u6599\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT PRIMARY KEY,\n    name VARCHAR(100),\n    email VARCHAR(100)\n);<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u66ff\u63db\u4e00\u500b\u7528\u6236\u7684\u8cc7\u6599\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7684 REPLACE \u8a9e\u53e5\uff1a<\/p>\n<pre><code>REPLACE INTO users (id, name, email) VALUES (1, '\u5f35\u4e09', 'zhangsan@example.com');<\/code><\/pre>\n<p>\u5982\u679c\u8cc7\u6599\u8868\u4e2d\u5df2\u7d93\u5b58\u5728 id \u70ba 1 \u7684\u7528\u6236\uff0c\u9019\u689d\u8a9e\u53e5\u5c07\u6703\u522a\u9664\u8a72\u7528\u6236\u7684\u820a\u8cc7\u6599\uff0c\u7136\u5f8c\u63d2\u5165\u65b0\u7684\u8cc7\u6599\u3002\u5982\u679c id \u70ba 1 \u7684\u7528\u6236\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u76f4\u63a5\u63d2\u5165\u9019\u689d\u65b0\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-kVgDCCoSWK\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\uff1a<\/strong>REPLACE \u8a9e\u53e5\u4f9d\u8cf4\u65bc\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u4f86\u5224\u65b7\u662f\u5426\u9700\u8981\u66ff\u63db\u8cc7\u6599\u3002\u5982\u679c\u6c92\u6709\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\uff0cREPLACE \u8a9e\u53e5\u5c07\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u7531\u65bc REPLACE \u8a9e\u53e5\u6703\u5148\u522a\u9664\u820a\u8a18\u9304\u518d\u63d2\u5165\u65b0\u8a18\u9304\uff0c\u56e0\u6b64\u5728\u8655\u7406\u5927\u91cf\u8cc7\u6599\u6642\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8003\u616e\u4f7f\u7528 UPDATE \u8a9e\u53e5\u53ef\u80fd\u66f4\u70ba\u5408\u9069\u3002<\/li>\n<li><strong>\u89f8\u767c\u5668\u5f71\u97ff\uff1a<\/strong>\u5982\u679c\u8cc7\u6599\u8868\u4e0a\u6709\u89f8\u767c\u5668\uff0cREPLACE \u8a9e\u53e5\u7684\u57f7\u884c\u53ef\u80fd\u6703\u89f8\u767c\u9019\u4e9b\u89f8\u767c\u5668\uff0c\u5c0e\u81f4\u610f\u5916\u7684\u884c\u70ba\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-kVgDCCoSWK\">\u7d50\u8ad6<\/h2>\n<p>REPLACE \u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8cc7\u6599\u5eab\u4e2d\u6709\u6548\u5730\u66f4\u65b0\u548c\u63d2\u5165\u8cc7\u6599\u3002\u4e86\u89e3\u5176\u8a9e\u6cd5\u548c\u5de5\u4f5c\u539f\u7406\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7ba1\u7406\u8cc7\u6599\u5eab\u4e2d\u7684\u8cc7\u6599\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u8cc7\u6599\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u8cc7\u6599\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 SQL \u66ff\u63db\u8a9e\u53e5\u7684\u8a9e\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u66f4\u65b0\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-144061","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144061","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=144061"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144061\/revisions"}],"predecessor-version":[{"id":144062,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144061\/revisions\/144062"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=144061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=144061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=144061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}