{"id":195809,"date":"2024-11-13T18:05:18","date_gmt":"2024-11-13T10:05:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195809\/"},"modified":"2024-11-13T18:05:19","modified_gmt":"2024-11-13T10:05:19","slug":"%e5%9c%a8sqlite%e4%b8%ad%e9%80%9a%e9%81%8ereplace%e4%be%86%e5%af%a6%e7%8f%be%e6%8f%92%e5%85%a5%e5%92%8c%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195809\/","title":{"rendered":"\u5728SQLite\u4e2d\u901a\u904eReplace\u4f86\u5be6\u73fe\u63d2\u5165\u548c\u66f4\u65b0"},"content":{"rendered":"<h1 id=\"%e5%9c%a8sqlite%e4%b8%ad%e9%80%9a%e9%81%8ereplace%e4%be%86%e5%af%a6%e7%8f%be%e6%8f%92%e5%85%a5%e5%92%8c%e6%9b%b4%e6%96%b0-vLKjfrCerM\">\u5728SQLite\u4e2d\u901a\u904eReplace\u4f86\u5be6\u73fe\u63d2\u5165\u548c\u66f4\u65b0<\/h1>\n<p>SQLite\u662f\u4e00\u7a2e\u8f15\u91cf\u7d1a\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u5b83\u7684\u7c21\u55ae\u6027\u548c\u9ad8\u6548\u6027\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u5feb\u901f\u5730\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u5728SQLite\u4e2d\uff0c\u7576\u9700\u8981\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u6642\uff0c\u901a\u5e38\u6703\u4f7f\u7528INSERT\u548cUPDATE\u8a9e\u53e5\u3002\u7136\u800c\uff0cSQLite\u9084\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70baREPLACE\u7684\u8a9e\u53e5\uff0c\u9019\u4f7f\u5f97\u63d2\u5165\u548c\u66f4\u65b0\u64cd\u4f5c\u8b8a\u5f97\u66f4\u52a0\u9748\u6d3b\u548c\u9ad8\u6548\u3002<\/p>\n<h2 id=\"replace%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-vLKjfrCerM\">REPLACE\u8a9e\u53e5\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>REPLACE\u8a9e\u53e5\u7684\u529f\u80fd\u985e\u4f3c\u65bcINSERT\uff0c\u4f46\u5b83\u6703\u5728\u63d2\u5165\u65b0\u884c\u4e4b\u524d\u6aa2\u67e5\u662f\u5426\u5b58\u5728\u5177\u6709\u76f8\u540c\u4e3b\u9375\u7684\u884c\u3002\u5982\u679c\u5b58\u5728\uff0c\u5247\u6703\u522a\u9664\u8a72\u884c\u4e26\u63d2\u5165\u65b0\u884c\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u63d2\u5165\u65b0\u884c\u3002\u9019\u4f7f\u5f97REPLACE\u8a9e\u53e5\u5728\u9700\u8981\u66f4\u65b0\u73fe\u6709\u6578\u64da\u6216\u63d2\u5165\u65b0\u6578\u64da\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h3 id=\"replace%e8%aa%9e%e5%8f%a5%e7%9a%84%e8%aa%9e%e6%b3%95-vLKjfrCerM\">REPLACE\u8a9e\u53e5\u7684\u8a9e\u6cd5<\/h3>\n<pre><code>REPLACE INTO \u8868\u540d (\u52171, \u52172, ...) VALUES (\u503c1, \u503c2, ...);<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u8868\u540d\u662f\u8981\u64cd\u4f5c\u7684\u6578\u64da\u8868\uff0c\u52171\u3001\u52172\u7b49\u662f\u8981\u63d2\u5165\u6216\u66f4\u65b0\u7684\u5217\uff0c\u800c\u503c1\u3001\u503c2\u7b49\u662f\u5c0d\u61c9\u7684\u503c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8replace%e7%9a%84%e7%a4%ba%e4%be%8b-vLKjfrCerM\">\u4f7f\u7528REPLACE\u7684\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>users<\/code>\u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INTEGER PRIMARY KEY,\n    name TEXT,\n    email TEXT\n);<\/code><\/pre>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u60f3\u8981\u63d2\u5165\u4e00\u500b\u65b0\u7528\u6236\uff0c\u6216\u8005\u5982\u679c\u7528\u6236\u5df2\u7d93\u5b58\u5728\uff0c\u5247\u66f4\u65b0\u5176\u4fe1\u606f\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528REPLACE\u8a9e\u53e5\u4f86\u5be6\u73fe\u9019\u4e00\u9ede\uff1a<\/p>\n<pre><code>REPLACE INTO users (id, name, email) VALUES (1, '\u5f35\u4e09', 'zhangsan@example.com');<\/code><\/pre>\n<p>\u5982\u679c\u7528\u6236ID\u70ba1\u7684\u7528\u6236\u5df2\u7d93\u5b58\u5728\uff0c\u9019\u689d\u8a9e\u53e5\u5c07\u522a\u9664\u8a72\u7528\u6236\u7684\u820a\u8a18\u9304\uff0c\u7136\u5f8c\u63d2\u5165\u65b0\u7684\u8a18\u9304\u3002\u5982\u679c\u7528\u6236ID\u70ba1\u7684\u7528\u6236\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u76f4\u63a5\u63d2\u5165\u9019\u689d\u65b0\u8a18\u9304\u3002<\/p>\n<h2 id=\"replace%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-vLKjfrCerM\">REPLACE\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136REPLACE\u8a9e\u53e5\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\u7d04\u675f\uff1a<\/strong>REPLACE\u8a9e\u53e5\u4f9d\u8cf4\u65bc\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\u4f86\u5224\u65b7\u662f\u5426\u9700\u8981\u66f4\u65b0\u3002\u5982\u679c\u6c92\u6709\u8a2d\u7f6e\u4e3b\u9375\u6216\u552f\u4e00\u7d04\u675f\uff0cREPLACE\u5c07\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<li><strong>\u6578\u64da\u4e1f\u5931\uff1a<\/strong>\u4f7f\u7528REPLACE\u6642\uff0c\u820a\u7684\u884c\u6703\u88ab\u522a\u9664\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u3002\u5982\u679c\u9700\u8981\u4fdd\u7559\u820a\u6578\u64da\uff0c\u61c9\u8003\u616e\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>REPLACE\u8a9e\u53e5\u5728\u522a\u9664\u820a\u884c\u548c\u63d2\u5165\u65b0\u884c\u4e4b\u9593\u6703\u7522\u751f\u984d\u5916\u7684\u958b\u92b7\uff0c\u56e0\u6b64\u5728\u9ad8\u983b\u7387\u7684\u6578\u64da\u64cd\u4f5c\u4e2d\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 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