{"id":172533,"date":"2024-11-07T13:55:17","date_gmt":"2024-11-07T05:55:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172533\/"},"modified":"2024-11-07T13:55:18","modified_gmt":"2024-11-07T05:55:18","slug":"%e5%a6%82%e4%bd%95%e7%b7%a8%e5%af%absql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e4%bb%a3%e7%a2%bc-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e7%9a%84%e4%bb%a3%e7%a2%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172533\/","title":{"rendered":"\u5982\u4f55\u7de8\u5bebSQL\u6578\u64da\u5eab\u4e8b\u52d9\u4ee3\u78bc (\u6578\u64da\u5eab\u4e8b\u52d9\u7684\u4ee3\u78bc)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e7%b7%a8%e5%af%absql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e4%bb%a3%e7%a2%bc-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%e7%9a%84%e4%bb%a3%e7%a2%bc-yYfvqLWRIx\">\u5982\u4f55\u7de8\u5bebSQL\u6578\u64da\u5eab\u4e8b\u52d9\u4ee3\u78bc (\u6578\u64da\u5eab\u4e8b\u52d9\u7684\u4ee3\u78bc)<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6578\u64da\u5eab\u4e8b\u52d9\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002\u4e8b\u52d9\u662f\u4e00\u7d44\u64cd\u4f5c\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u9019\u7a2e\u7279\u6027\u5728\u8655\u7406\u91d1\u878d\u4ea4\u6613\u3001\u8a02\u55ae\u8655\u7406\u7b49\u5834\u666f\u4e2d\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u7de8\u5bebSQL\u6578\u64da\u5eab\u4e8b\u52d9\u4ee3\u78bc\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e4%ba%8b%e5%8b%99%ef%bc%9f-yYfvqLWRIx\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u4e8b\u52d9\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u4e8b\u52d9\u662f\u4e00\u500b\u908f\u8f2f\u64cd\u4f5c\u55ae\u5143\uff0c\u5177\u6709\u4ee5\u4e0b\u56db\u500b\u7279\u6027\uff0c\u901a\u5e38\u7a31\u70baACID\u7279\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u539f\u5b50\u6027 (Atomicity)<\/strong>\uff1a\u4e8b\u52d9\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u57f7\u884c\uff0c\u8981\u9ebc\u5168\u90e8\u4e0d\u57f7\u884c\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027 (Consistency)<\/strong>\uff1a\u4e8b\u52d9\u7684\u57f7\u884c\u5fc5\u9808\u4f7f\u6578\u64da\u5eab\u5f9e\u4e00\u500b\u4e00\u81f4\u7684\u72c0\u614b\u8f49\u8b8a\u5230\u53e6\u4e00\u500b\u4e00\u81f4\u7684\u72c0\u614b\u3002<\/li>\n<li><strong>\u9694\u96e2\u6027 (Isolation)<\/strong>\uff1a\u540c\u6642\u57f7\u884c\u7684\u4e8b\u52d9\u4e0d\u61c9\u76f8\u4e92\u5e72\u64fe\u3002<\/li>\n<li><strong>\u6301\u4e45\u6027 (Durability)<\/strong>\uff1a\u4e00\u65e6\u4e8b\u52d9\u63d0\u4ea4\uff0c\u5176\u7d50\u679c\u662f\u6c38\u4e45\u6027\u7684\uff0c\u5373\u4f7f\u7cfb\u7d71\u5d29\u6f70\u4e5f\u4e0d\u6703\u4e1f\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b7%a8%e5%af%absql%e4%ba%8b%e5%8b%99%e4%bb%a3%e7%a2%bc%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-yYfvqLWRIx\">\u7de8\u5bebSQL\u4e8b\u52d9\u4ee3\u78bc\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u7de8\u5beb\u4e8b\u52d9\u4ee3\u78bc\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u958b\u59cb\u4e8b\u52d9<\/li>\n<li>\u57f7\u884c\u6240\u9700\u7684SQL\u64cd\u4f5c<\/li>\n<li>\u6839\u64da\u64cd\u4f5c\u7d50\u679c\u6c7a\u5b9a\u63d0\u4ea4\u6216\u56de\u6efe\u4e8b\u52d9<\/li>\n<\/ol>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8mysql%e7%b7%a8%e5%af%ab%e4%ba%8b%e5%8b%99%e4%bb%a3%e7%a2%bc-yYfvqLWRIx\">\u793a\u4f8b\uff1a\u4f7f\u7528MySQL\u7de8\u5beb\u4e8b\u52d9\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528MySQL\u7684\u7c21\u55ae\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u7de8\u5beb\u4e8b\u52d9\u4ee3\u78bc\uff1a<\/p>\n<pre><code>START TRANSACTION;  -- \u958b\u59cb\u4e8b\u52d9\n\n-- \u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u8868\u548c\u4e00\u500b\u8cec\u6236\u8868\nUPDATE users SET balance = balance - 100 WHERE user_id = 1;  -- \u5f9e\u7528\u6236\u8cec\u6236\u6263\u6b3e\nUPDATE accounts SET balance = balance + 100 WHERE account_id = 2;  -- \u5411\u53e6\u4e00\u500b\u8cec\u6236\u5b58\u6b3e\n\n-- \u6aa2\u67e5\u64cd\u4f5c\u662f\u5426\u6210\u529f\nIF (ROW_COUNT() = 2) THEN\n    COMMIT;  -- \u63d0\u4ea4\u4e8b\u52d9\nELSE\n    ROLLBACK;  -- \u56de\u6efe\u4e8b\u52d9\nEND IF;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u958b\u59cb\u4e00\u500b\u4e8b\u52d9\uff0c\u7136\u5f8c\u57f7\u884c\u5169\u500b\u66f4\u65b0\u64cd\u4f5c\u3002\u5982\u679c\u9019\u5169\u500b\u64cd\u4f5c\u90fd\u6210\u529f\uff0c\u6211\u5011\u5c31\u63d0\u4ea4\u4e8b\u52d9\uff1b\u5982\u679c\u6709\u4efb\u4f55\u4e00\u500b\u64cd\u4f5c\u5931\u6557\uff0c\u6211\u5011\u5c31\u56de\u6efe\u4e8b\u52d9\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-yYfvqLWRIx\">\u4f7f\u7528\u4e8b\u52d9\u7684\u6ce8\u610f\u4e8b\u9805<\/h3>\n<p>\u5728\u7de8\u5beb\u4e8b\u52d9\u4ee3\u78bc\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u4e8b\u52d9\u4e2d\u57f7\u884c\u7684\u64cd\u4f5c\u662f\u539f\u5b50\u6027\u7684\uff0c\u907f\u514d\u90e8\u5206\u64cd\u4f5c\u6210\u529f\u800c\u5176\u4ed6\u64cd\u4f5c\u5931\u6557\u7684\u60c5\u6cc1\u3002<\/li>\n<li>\u5728\u9577\u6642\u9593\u904b\u884c\u7684\u4e8b\u52d9\u4e2d\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9396\u5b9a\u554f\u984c\uff0c\u56e0\u6b64\u61c9\u76e1\u91cf\u7e2e\u77ed\u4e8b\u52d9\u7684\u6301\u7e8c\u6642\u9593\u3002<\/li>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u9694\u96e2\u7d1a\u5225\u4f86\u5e73\u8861\u6027\u80fd\u548c\u6578\u64da\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-yYfvqLWRIx\">\u7d50\u8ad6<\/h2>\n<p>\u7de8\u5bebSQL\u6578\u64da\u5eab\u4e8b\u52d9\u4ee3\u78bc\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u4e8b\u52d9\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u64cd\u4f5c\uff0c\u907f\u514d\u6578\u64da\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u7121\u8ad6\u662f\u5728\u91d1\u878d\u61c9\u7528\u9084\u662f\u5176\u4ed6\u9700\u8981\u9ad8\u53ef\u9760\u6027\u7684\u7cfb\u7d71\u4e2d\uff0c\u638c\u63e1\u4e8b\u52d9\u7684\u4f7f\u7528\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u7de8\u5bebSQL\u6578\u64da\u5eab\u4e8b\u52d9\u4ee3\u78bc\uff0c\u638c\u63e1\u6578\u64da\u5eab\u4e8b\u52d9\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5be6\u8e10\u6280\u5de7\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\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-172533","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172533","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=172533"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172533\/revisions"}],"predecessor-version":[{"id":172534,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172533\/revisions\/172534"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}