{"id":200388,"date":"2025-05-06T12:38:43","date_gmt":"2025-05-06T04:38:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200388\/"},"modified":"2025-05-06T12:38:43","modified_gmt":"2025-05-06T04:38:43","slug":"sql-%e4%b8%ad%e5%a6%82%e4%bd%95%e5%bf%bd%e7%95%a5%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%e4%b8%ad%e7%9a%84%e5%94%af%e4%b8%80%e9%94%ae%e5%86%b2%e7%aa%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200388\/","title":{"rendered":"SQL \u4e2d\u5982\u4f55\u5ffd\u7565\u66f4\u65b0\u64cd\u4f5c\u4e2d\u7684\u552f\u4e00\u952e\u51b2\u7a81\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>SQL \u4e2d\u5982\u4f55\u5ffd\u7565\u66f4\u65b0\u64cd\u4f5c\u4e2d\u7684\u552f\u4e00\u952e\u51b2\u7a81\uff1f<\/h1>\n<p>\u4eca\u5929\u4e3b\u673a\u5b9d\u8d1d\u7ed9\u5927\u5bb6\u5e26\u6765\u4e86\uff0c\u5176\u4e2d\u6d89\u53ca\u5230\u7684\u77e5\u8bc6\u70b9\u5305\u62ec\u7b49\u7b49\uff0c\u65e0\u8bba\u4f60\u662f\u5c0f\u767d\u8fd8\u662f\u8001\u624b\uff0c\u90fd\u9002\u5408\u770b\u4e00\u770b\u54e6~\u6709\u597d\u7684\u5efa\u8bae\u4e5f\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u82e5\u662f\u770b\u5b8c\u6709\u6240\u6536\u83b7\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u70b9\u8d5e\u652f\u6301\u5440\uff01\u4e00\u8d77\u52a0\u6cb9\u5b66\u4e60~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241103\/1730640109672778ede43e9.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>sql \u4e2d\u7684\u201cupdate ignore\u201d<\/strong><\/p>\n<p>\u5728 sql \u4e2d\uff0cinsert ignore \u8bed\u53e5\u5141\u8bb8\u5728\u63d2\u5165\u6570\u636e\u65f6\u5ffd\u7565\u552f\u4e00\u952e\u51b2\u7a81\u3002\u90a3\u4e48\uff0c\u662f\u5426\u6709\u7c7b\u4f3c\u7684\u8bed\u6cd5\u7528\u4e8e\u66f4\u65b0\u6570\u636e\u800c\u4e0d\u4ea7\u751f\u51b2\u7a81\u5462\uff1f<\/p>\n<p>\u7b54\u6848\u662f\u80af\u5b9a\u7684\uff0cupdate ignore \u8bed\u6cd5\u53ef\u4ee5\u7528\u4e8e\u6b64\u76ee\u7684\uff0c\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>UPDATE [LOW_PRIORITY] [IGNORE] table_reference\nSET assignment_list\n[WHERE where_condition]\n[ORDER BY ...]\n[LIMIT row_count]<\/pre>\n<p>ignore \u4fee\u9970\u7b26\u6307\u793a\u66f4\u65b0\u8bed\u53e5\u5373\u4f7f\u5728\u66f4\u65b0\u8fc7\u7a0b\u4e2d\u9047\u5230\u9519\u8bef\u4e5f\u4e0d\u4f1a\u4e2d\u6b62\u3002\u5bf9\u4e8e\u4e0e\u552f\u4e00\u952e\u51b2\u7a81\u7684\u884c\uff0c\u5c06\u4e0d\u8fdb\u884c\u66f4\u65b0\u3002\u5bf9\u4e8e\u56e0\u6570\u636e\u8f6c\u6362\u9519\u8bef\u800c\u5bfc\u81f4\u66f4\u65b0\u540e\u503c\u7684\u884c\u7684\uff0c\u5c06\u66f4\u65b0\u4e3a\u6700\u63a5\u8fd1\u7684\u6709\u6548\u503c\u3002<\/p>\n<p>low_priority \u4fee\u9970\u7b26\u8868\u793a\u66f4\u65b0\u8bed\u53e5\u4f18\u5148\u7ea7\u8f83\u4f4e\uff0c\u5982\u679c\u7cfb\u7edf\u8d44\u6e90\u4e0d\u8db3\uff0c\u53ef\u80fd\u4f1a\u5ef6\u8fdf\u6267\u884c\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u9700\u8981\u5728\u66f4\u65b0\u6570\u636e\u65f6\u5ffd\u7565\u552f\u4e00\u952e\u51b2\u7a81\uff0c\u53ef\u4ee5\u4f7f\u7528\u5e26\u6709 ignore \u4fee\u9970\u7b26\u7684 update \u8bed\u53e5\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aSQL \u4e2d\u5982\u4f55\u5ffd\u7565\u66f4\u65b0\u64cd\u4f5c\u4e2d\u7684\u552f\u4e00\u952e\u51b2\u7a81\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>SQL \u4e2d\u5982\u4f55\u5ffd\u7565\u66f4\u65b0\u64cd\u4f5c\u4e2d\u7684\u552f&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200388","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200388","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200388"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200388\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}