{"id":160137,"date":"2024-11-03T20:35:20","date_gmt":"2024-11-03T12:35:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160137\/"},"modified":"2024-11-03T20:35:21","modified_gmt":"2024-11-03T12:35:21","slug":"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-for-update","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160137\/","title":{"rendered":"OceanBase \u6559\u7a0b\uff1aOceanBase FOR UPDATE"},"content":{"rendered":"<h1 id=\"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-for-update-GegSKjOolM\">OceanBase \u6559\u7a0b\uff1aOceanBase FOR UPDATE<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cOceanBase \u4f5c\u70ba\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u5206\u4f48\u5f0f\u6578\u64da\u5eab\uff0c\u8d8a\u4f86\u8d8a\u53d7\u5230\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u9752\u775e\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u9ad8\u64f4\u5c55\u6027\u7684\u61c9\u7528\u5834\u666f\u4e2d\uff0cOceanBase \u7684\u8868\u73fe\u5c24\u70ba\u7a81\u51fa\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e OceanBase \u4e2d\u7684 FOR UPDATE \u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u7528\u6cd5\u53ca\u61c9\u7528\u5834\u666f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-for-update%ef%bc%9f-GegSKjOolM\">\u4ec0\u9ebc\u662f FOR UPDATE\uff1f<\/h2>\n<p>FOR UPDATE \u662f\u4e00\u500b SQL \u8a9e\u53e5\uff0c\u7528\u65bc\u9396\u5b9a\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u884c\uff0c\u4ee5\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u5c0d\u9019\u4e9b\u884c\u9032\u884c\u4fee\u6539\u3002\u9019\u5728\u9700\u8981\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u60c5\u6cc1\u4e0b\u5c24\u70ba\u91cd\u8981\u3002\u7576\u4e00\u500b\u4e8b\u52d9\u4f7f\u7528 FOR UPDATE \u9396\u5b9a\u67d0\u4e9b\u884c\u6642\uff0c\u5176\u4ed6\u4e8b\u52d9\u5c07\u7121\u6cd5\u5c0d\u9019\u4e9b\u884c\u9032\u884c\u66f4\u65b0\u6216\u522a\u9664\uff0c\u76f4\u5230\u9396\u5b9a\u7684\u4e8b\u52d9\u5b8c\u6210\u3002<\/p>\n<h2 id=\"oceanbase-%e4%b8%ad%e7%9a%84-for-update-%e8%aa%9e%e6%b3%95-GegSKjOolM\">OceanBase \u4e2d\u7684 FOR UPDATE \u8a9e\u6cd5<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0cFOR UPDATE \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d WHERE \u689d\u4ef6 FOR UPDATE;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u9078\u64c7\u7b26\u5408\u689d\u4ef6\u7684\u6240\u6709\u884c\u4e26\u9396\u5b9a\u5b83\u5011\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE user_id = 1 FOR UPDATE;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u67e5\u8a62\u5c07\u9396\u5b9a user_id \u70ba 1 \u7684\u7528\u6236\u884c\uff0c\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u5c0d\u8a72\u884c\u9032\u884c\u4fee\u6539\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-for-update-%e7%9a%84%e5%a0%b4%e6%99%af-GegSKjOolM\">\u4f7f\u7528 FOR UPDATE \u7684\u5834\u666f<\/h2>\n<p>\u4f7f\u7528 FOR UPDATE \u7684\u5834\u666f\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e8b\u52d9\u8655\u7406\uff1a<\/strong>\u5728\u591a\u500b\u6b65\u9a5f\u7684\u4e8b\u52d9\u4e2d\uff0c\u78ba\u4fdd\u5728\u66f4\u65b0\u6578\u64da\u4e4b\u524d\u4e0d\u6703\u6709\u5176\u4ed6\u4e8b\u52d9\u5c0d\u5176\u9032\u884c\u4fee\u6539\u3002<\/li>\n<li><strong>\u9632\u6b62\u5e7b\u8b80\uff1a<\/strong>\u5728\u8b80\u53d6\u6578\u64da\u5f8c\u9032\u884c\u66f4\u65b0\u6642\uff0c\u4f7f\u7528 FOR UPDATE \u53ef\u4ee5\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u63d2\u5165\u65b0\u6578\u64da\uff0c\u5f9e\u800c\u907f\u514d\u5e7b\u8b80\u73fe\u8c61\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u9700\u8981\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 FOR UPDATE \u53ef\u4ee5\u9396\u5b9a\u6578\u64da\uff0c\u907f\u514d\u4e26\u767c\u4fee\u6539\u5c0e\u81f4\u7684\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-GegSKjOolM\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 FOR UPDATE \u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u9396\u5b9a\u7bc4\u570d\uff1a<\/strong>FOR UPDATE \u53ea\u6703\u9396\u5b9a\u67e5\u8a62\u7d50\u679c\u4e2d\u7684\u884c\uff0c\u56e0\u6b64\u9700\u8981\u8b39\u614e\u8a2d\u8a08\u67e5\u8a62\u689d\u4ef6\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u9396\u5b9a\u3002<\/li>\n<li><strong>\u6b7b\u9396\u98a8\u96aa\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u4f7f\u7528 FOR UPDATE \u53ef\u80fd\u6703\u5c0e\u81f4\u6b7b\u9396\uff0c\u56e0\u6b64\u9700\u8981\u5408\u7406\u8a2d\u8a08\u4e8b\u52d9\u7684\u57f7\u884c\u9806\u5e8f\u3002<\/li>\n<li><strong>\u6027\u80fd\u5f71\u97ff\uff1a<\/strong>\u9396\u5b9a\u884c\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9577\u6642\u9593\u6301\u6709\u9396\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5176\u4ed6\u4e8b\u52d9\u7684\u7b49\u5f85\u6642\u9593\u589e\u52a0\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-GegSKjOolM\">\u7d50\u8ad6<\/h2>\n<p>FOR UPDATE \u662f OceanBase \u4e2d\u4e00\u500b\u91cd\u8981\u7684 SQL \u8a9e\u53e5\uff0c\u80fd\u5920\u6709\u6548\u5730\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5728\u9ad8\u4e26\u767c\u7684\u61c9\u7528\u5834\u666f\u4e2d\uff0c\u5408\u7406\u4f7f\u7528 FOR UPDATE \u53ef\u4ee5\u6709\u6548\u9632\u6b62\u6578\u64da\u885d\u7a81\u548c\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5920\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3 OceanBase \u4e2d\u7684 FOR UPDATE \u8a9e\u53e5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u53ca\u5176\u4ed6\u76f8\u95dc\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to use OceanBase FOR UPDATE in this comprehensive tutorial, enhancing your database management skills with practical examples and tips.<\/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-160137","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160137","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=160137"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160137\/revisions"}],"predecessor-version":[{"id":160138,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160137\/revisions\/160138"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}