{"id":20406,"date":"2024-01-02T05:11:20","date_gmt":"2024-01-02T05:11:20","guid":{"rendered":"https:\/\/server.hk\/blog\/20406\/"},"modified":"2024-11-14T10:39:30","modified_gmt":"2024-11-14T02:39:30","slug":"postgresql-command-release-savepoint","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20406\/","title":{"rendered":"PostgreSQL \u6307\u4ee4\uff1aRELEASE SAVEPOINT"},"content":{"rendered":"

PostgreSQL \u6307\u4ee4\uff1aRELEASE SAVEPOINT<\/h1>\n

PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u548c\u6307\u4ee4\u4f86\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u5176\u4e2d\u4e00\u500b\u6307\u4ee4\u662f RELEASE SAVEPOINT<\/code>\uff0c\u5b83\u5141\u8a31\u4f7f\u7528\u8005\u79fb\u9664\u5728\u4ea4\u6613\u4e2d\u5148\u524d\u5b9a\u7fa9\u7684\u5132\u5b58\u9ede\u3002<\/p>\n

\u4e86\u89e3\u5132\u5b58\u9ede<\/h2>\n

\u5728 PostgreSQL \u4e2d\uff0c\u5132\u5b58\u9ede\u662f\u4ea4\u6613\u4e2d\u7684\u4e00\u500b\u5177\u540d\u9ede\uff0c\u5141\u8a31\u4f60\u5728\u9700\u8981\u6642\u56de\u6efe\u5230\u8a72\u9ede\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5c07\u4ea4\u6613\u5206\u6210\u8f03\u5c0f\u3001\u66f4\u6613\u65bc\u7ba1\u7406\u90e8\u5206\u7684\u65b9\u5f0f\uff0c\u65b9\u4fbf\u8655\u7406\u932f\u8aa4\u4e26\u57f7\u884c\u90e8\u5206\u56de\u6efe\u3002<\/p>\n

\u5132\u5b58\u9ede\u5728\u57f7\u884c\u591a\u500b\u64cd\u4f5c\u7684\u8907\u96dc\u4ea4\u6613\u4e2d\u7279\u5225\u6709\u7528\uff0c\u7576\u9047\u5230\u932f\u8aa4\u6642\uff0c\u53ea\u9700\u8981\u64a4\u92b7\u90e8\u5206\u66f4\u6539\u5373\u53ef\u3002<\/p>\n

\u4f7f\u7528 RELEASE SAVEPOINT<\/h2>\n

RELEASE SAVEPOINT<\/code> \u6307\u4ee4\u7528\u65bc\u79fb\u9664\u5132\u5b58\u9ede\u4ee5\u53ca\u8a72\u4ea4\u6613\u4e2d\u6240\u6709\u5f8c\u7e8c\u7684\u5132\u5b58\u9ede\u3002\u4f7f\u7528\u8a72\u6307\u4ee4\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n

RELEASE SAVEPOINT savepoint_name;\r\n<\/code><\/pre>\n
\u9019\u88e1\u7684 savepoint_name<\/code> \u662f\u4f60\u60f3\u8981\u79fb\u9664\u7684\u5132\u5b58\u9ede\u540d\u7a31\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u91cb\u653e\u5132\u5b58\u9ede\u4e26\u4e0d\u6703\u81ea\u52d5\u63d0\u4ea4\u4ea4\u6613\u3002\u91cb\u653e\u5132\u5b58\u9ede\u5f8c\u7684\u66f4\u6539\u4ecd\u7136\u8655\u65bc\u5f85\u5b9a\u72c0\u614b\uff0c\u76f4\u5230\u4f60\u660e\u78ba\u63d0\u4ea4\u4ea4\u6613\u70ba\u6b62\u3002<\/p>\n
\u7bc4\u4f8b<\/h2>\n
\u8b93\u6211\u5011\u901a\u904e\u4e00\u500b\u7bc4\u4f8b\u4f86\u66f4\u597d\u5730\u7406\u89e3 RELEASE SAVEPOINT<\/code> \u6307\u4ee4\u7684\u904b\u4f5c\u65b9\u5f0f\uff1a<\/p>\n
BEGIN;\r\nINSERT INTO employees (id, name) VALUES (1, 'John');\r\nSAVEPOINT sp1;\r\nINSERT INTO employees (id, name) VALUES (2, 'Jane');\r\nSAVEPOINT sp2;\r\nINSERT INTO employees (id, name) VALUES (3, 'Mike');\r\nRELEASE SAVEPOINT sp2;\r\nINSERT INTO employees (id, name) VALUES (4, 'Sarah');\r\nCOMMIT;\r\n<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 BEGIN<\/code> \u6307\u4ee4\u555f\u52d5\u4e00\u500b\u4ea4\u6613\u3002\u7136\u5f8c\uff0c\u6211\u5011\u5728 “employees” \u8868\u4e2d\u63d2\u5165\u4e09\u7b46\u8a18\u9304\uff0c\u4e26\u5b9a\u7fa9\u4e86\u5169\u500b\u5132\u5b58\u9ede\uff1asp1<\/code> \u548c sp2<\/code>\u3002<\/p>\n
\u7576\u6211\u5011\u4f7f\u7528 RELEASE SAVEPOINT<\/code> \u91cb\u653e sp2<\/code> \u5f8c\uff0csp2<\/code> \u4e4b\u5f8c\u7684\u66f4\u6539\u4ecd\u7136\u8655\u65bc\u5f85\u5b9a\u72c0\u614b\u3002\u6700\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 COMMIT<\/code> \u6307\u4ee4\u63d0\u4ea4\u4ea4\u6613\uff0c\u61c9\u7528\u5728\u4ea4\u6613\u4e2d\u6240\u505a\u7684\u6240\u6709\u66f4\u6539\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
PostgreSQL \u4e2d\u7684 RELEASE SAVEPOINT<\/code> \u6307\u4ee4\u63d0\u4f9b\u4e86\u4e00\u7a2e\u79fb\u9664\u5728\u4ea4\u6613\u4e2d\u5148\u524d\u5b9a\u7fa9\u7684\u5132\u5b58\u9ede\u7684\u65b9\u5f0f\u3002\u5b83\u5141\u8a31\u5c0d\u4ea4\u6613\u9032\u884c\u66f4\u7d30\u7dfb\u7684\u63a7\u5236\uff0c\u5f9e\u800c\u5728\u5fc5\u8981\u6642\u66f4\u8f15\u9b06\u5730\u8655\u7406\u932f\u8aa4\u4e26\u9032\u884c\u90e8\u5206\u56de\u6efe\u3002<\/p>\n
\u82e5\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc PostgreSQL \u53ca\u5176\u529f\u80fd\uff0c\u5efa\u8b70\u63a2\u7d22 \u9999\u6e2f VPS \u8a17\u7ba1<\/a>\u3002\u4ed6\u5011\u63d0\u4f9b\u7684\u9802\u7d1a VPS \u89e3\u6c7a\u65b9\u6848\u80fd\u8b93\u4f60\u5728\u53ef\u9760\u7684\u8a17\u7ba1\u74b0\u5883\u4e2d\u9ad4\u9a57 PostgreSQL \u7684\u5f37\u5927\u548c\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
PostgreSQL \u6307\u4ee4\uff1aRE...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20406","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20406","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=20406"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20406\/revisions"}],"predecessor-version":[{"id":24371,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20406\/revisions\/24371"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}