{"id":176675,"date":"2024-11-08T12:18:19","date_gmt":"2024-11-08T04:18:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176675\/"},"modified":"2024-11-08T12:18:20","modified_gmt":"2024-11-08T04:18:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e9%8d%b5key%e7%9a%84%e9%87%8d%e8%a4%87%e6%a2%9d%e7%9b%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176675\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e9%8d%b5key%e7%9a%84%e9%87%8d%e8%a4%87%e6%a2%9d%e7%9b%ae-mNrrScECMW\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u7d93\u5e38\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u201c\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u63d2\u5165\u4e00\u689d\u8a18\u9304\u6642\uff0c\u800c\u8a72\u8a18\u9304\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u5df2\u7d93\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5982\u4f55\u4fee\u5fa9\u5b83\uff0c\u4ee5\u53ca\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u4f86\u907f\u514d\u672a\u4f86\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-mNrrScECMW\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u7576\u4f60\u5728MySQL\u4e2d\u63d2\u5165\u6578\u64da\u6642\uff0c\u5982\u679c\u8a72\u6578\u64da\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u8207\u5df2\u5b58\u5728\u7684\u6578\u64da\u885d\u7a81\uff0c\u5c31\u6703\u51fa\u73fe\u201c\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\u201d\u932f\u8aa4\u3002\u9019\u901a\u5e38\u662f\u7531\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8907\u7684\u6578\u64da\u63d2\u5165\uff1a<\/strong>\u7576\u4f60\u5617\u8a66\u63d2\u5165\u4e00\u689d\u5df2\u5b58\u5728\u7684\u8a18\u9304\u6642\uff0c\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u932f\u8aa4\u7684\u6578\u64da\u8655\u7406\u908f\u8f2f\uff1a<\/strong>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u80fd\u5b58\u5728\u908f\u8f2f\u932f\u8aa4\uff0c\u5c0e\u81f4\u91cd\u8907\u63d2\u5165\u76f8\u540c\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u9077\u79fb\u6216\u5c0e\u5165\u554f\u984c\uff1a<\/strong>\u5728\u5f9e\u5176\u4ed6\u6578\u64da\u6e90\u5c0e\u5165\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u91cd\u8907\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e6%ad%a4%e9%8c%af%e8%aa%a4-mNrrScECMW\">\u5982\u4f55\u4fee\u5fa9\u6b64\u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9\u201c\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\u201d\u932f\u8aa4\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a-mNrrScECMW\">1. \u6aa2\u67e5\u6578\u64da<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u4f60\u8981\u63d2\u5165\u7684\u6578\u64da\u662f\u5426\u5df2\u7d93\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT * FROM your_table WHERE your_unique_key = 'value';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u8fd4\u56de\u4e86\u73fe\u6709\u7684\u8a18\u9304\uff0c\u5247\u9700\u8981\u8003\u616e\u66f4\u65b0\u8a72\u8a18\u9304\u800c\u4e0d\u662f\u63d2\u5165\u65b0\u8a18\u9304\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8insert-ignore-mNrrScECMW\">2. \u4f7f\u7528INSERT IGNORE<\/h3>\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u5728\u63d2\u5165\u6642\u5ffd\u7565\u91cd\u8907\u7684\u689d\u76ee\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT IGNORE\u8a9e\u53e5\u3002\u9019\u6a23\uff0c\u5982\u679c\u63d2\u5165\u7684\u6578\u64da\u5df2\u7d93\u5b58\u5728\uff0cMySQL\u5c07\u4e0d\u6703\u5831\u932f\uff0c\u800c\u662f\u7c21\u55ae\u5730\u5ffd\u7565\u8a72\u64cd\u4f5c\uff1a<\/p>\n<pre><code>INSERT IGNORE INTO your_table (your_unique_key, other_column) VALUES ('value', 'other_value');<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8on-duplicate-key-update-mNrrScECMW\">3. \u4f7f\u7528ON DUPLICATE KEY UPDATE<\/h3>\n<p>\u53e6\u4e00\u7a2e\u89e3\u6c7a\u65b9\u6848\u662f\u4f7f\u7528ON DUPLICATE KEY UPDATE\u8a9e\u53e5\u3002\u9019\u6a23\uff0c\u5982\u679c\u63d2\u5165\u7684\u6578\u64da\u5df2\u7d93\u5b58\u5728\uff0cMySQL\u5c07\u66f4\u65b0\u8a72\u8a18\u9304\uff0c\u800c\u4e0d\u662f\u5831\u932f\uff1a<\/p>\n<pre><code>INSERT INTO your_table (your_unique_key, other_column) VALUES ('value', 'other_value')\nON DUPLICATE KEY UPDATE other_column = 'new_value';<\/code><\/pre>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e9%81%b7%e7%a7%bb%e6%88%96%e5%b0%8e%e5%85%a5%e9%81%8e%e7%a8%8b-mNrrScECMW\">4. \u6aa2\u67e5\u6578\u64da\u9077\u79fb\u6216\u5c0e\u5165\u904e\u7a0b<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u767c\u751f\u5728\u6578\u64da\u9077\u79fb\u6216\u5c0e\u5165\u904e\u7a0b\u4e2d\uff0c\u8acb\u6aa2\u67e5\u5c0e\u5165\u7684\u6578\u64da\u662f\u5426\u5b58\u5728\u91cd\u8907\u7684\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u3002\u78ba\u4fdd\u5728\u5c0e\u5165\u4e4b\u524d\u6e05\u7406\u6578\u64da\uff0c\u4e26\u4f7f\u7528\u9069\u7576\u7684\u5de5\u5177\u4f86\u8655\u7406\u91cd\u8907\u9805\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-mNrrScECMW\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u70ba\u4e86\u907f\u514d\u672a\u4f86\u51fa\u73fe\u201c\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\u201d\u932f\u8aa4\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u552f\u4e00\u7d04\u675f\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u4e2d\u8a2d\u7f6e\u552f\u4e00\u7d04\u675f\uff0c\u4ee5\u9632\u6b62\u91cd\u8907\u6578\u64da\u7684\u63d2\u5165\u3002<\/li>\n<li><strong>\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u5b9a\u671f\u57f7\u884c\u6578\u64da\u5b8c\u6574\u6027\u6aa2\u67e5\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u6e96\u78ba\u6027\u3002<\/li>\n<li><strong>\u512a\u5316\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\uff1a<\/strong>\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u6b63\u78ba\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u8907\u63d2\u5165\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mNrrScECMW\">\u7e3d\u7d50<\/h2>\n<p>\u4fee\u5fa9MySQL\u4e2d\u7684\u201c\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\u201d\u932f\u8aa4\u9700\u8981\u4ed4\u7d30\u6aa2\u67e5\u6578\u64da\u548c\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u3002\u901a\u904e\u4f7f\u7528\u9069\u7576\u7684SQL\u8a9e\u53e5\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u6b64\u985e\u554f\u984c\u7684\u767c\u751f\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4\uff1a\u9375&#8217;key&#8217;\u7684\u91cd\u8907\u689d\u76ee\uff0c\u89e3\u6c7a\u6578\u64da\u5eab\u4e2d\u7684\u91cd\u8907\u9375\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\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-176675","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176675","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=176675"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176675\/revisions"}],"predecessor-version":[{"id":176676,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176675\/revisions\/176676"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}