{"id":200507,"date":"2025-05-06T11:59:24","date_gmt":"2025-05-06T03:59:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200507\/"},"modified":"2025-05-06T11:59:24","modified_gmt":"2025-05-06T03:59:24","slug":"mysql-mvcc%e4%b8%8b%ef%bc%8cupdate%e5%90%8eselect%e4%b8%ba%e4%bd%95%e8%83%bd%e8%af%bb%e5%88%b0%e5%b7%b2%e6%8f%90%e4%ba%a4%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200507\/","title":{"rendered":"MySQL MVCC\u4e0b\uff0cUPDATE\u540eSELECT\u4e3a\u4f55\u80fd\u8bfb\u5230\u5df2\u63d0\u4ea4\u6570\u636e\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL MVCC\u4e0b\uff0cUPDATE\u540eSELECT\u4e3a\u4f55\u80fd\u8bfb\u5230\u5df2\u63d0\u4ea4\u6570\u636e\uff1f<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u4e3b\u8981\u8bb2\u89e3\u4e86\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u4e3b\u673a\u5b9d\u8d1d\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241107\/1730940506672c0e5aa8340.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>MVVC\u9694\u79bb\u7ea7\u522b\u4e0b\uff0cSELECT\u4e3a\u4ec0\u4e48\u5728UPDATE\u540e\u53ef\u4ee5\u8bfb\u5230\uff1f<\/strong><\/p>\n<p>\u5728MySQL\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u4e3aMVCC\u65f6\uff0c\u4e8b\u52a1A\u6267\u884cUPDATE\u64cd\u4f5c\u540e\uff0c\u4e8b\u52a1B\u6267\u884cSELECT\u64cd\u4f5c\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\uff0cB\u662f\u8bfb\u4e0d\u5230A\u66f4\u65b0\u7684\u6570\u636e\u7684\u3002\u4f46\u6709\u4e00\u4e2a\u4f8b\u5916\u7684\u60c5\u51b5\u662f\uff0cB\u53ef\u4ee5\u8bfb\u5230A\u5728UPDATE\u64cd\u4f5c<strong>\u63d0\u4ea4\u540e<\/strong>\u5199\u5165\u7684\u6570\u636e\u3002<\/p>\n<p><strong>\u539f\u56e0\u5206\u6790\uff1a<\/strong><\/p>\n<p>MVVC\u7684\u8bfb\u64cd\u4f5c\u4f1a\u57fa\u4e8e\u4e8b\u52a1ID\u751f\u6210\u4e00\u4e2a\u5feb\u7167\uff0c\u5e76\u6309\u7167\u5982\u4e0b\u89c4\u5219\u67e5\u627e\u6570\u636e\uff1a<\/p>\n<ul>\n<li><strong>\u89c4\u52191\uff1a<\/strong> \u6309\u4e8b\u52a1ID\u548c\u5feb\u7167\u8bfb\u533a\u95f4\u67e5\u627e\u6570\u636e\uff0c\u5982\u679c\u627e\u5230\u76ee\u6807\u6570\u636e\uff0c\u5219\u8fd4\u56de\u3002<\/li>\n<li><strong>\u89c4\u52192\uff1a<\/strong> 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<\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL MVCC\u4e0b\uff0cUPDA&#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-200507","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200507","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=200507"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200507\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200507"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200507"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200507"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}