{"id":96826,"date":"2024-10-20T12:41:16","date_gmt":"2024-10-20T04:41:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96826\/"},"modified":"2024-10-20T12:41:17","modified_gmt":"2024-10-20T04:41:17","slug":"postgresql-42710-%e9%87%8d%e8%a4%87%e7%9a%84%e5%b0%8d%e8%b1%a1-%e6%8a%a5%e9%94%99-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%a4%8d-%e8%bf%9c%e7%a8%8b%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96826\/","title":{"rendered":"PostgreSQL 42710: \u91cd\u8907\u7684\u5c0d\u8c61 \u62a5\u9519 \u6545\u969c\u4fee\u590d \u8fdc\u7a0b\u5904\u7406"},"content":{"rendered":"<h1 id=\"postgresql-42710-%e9%87%8d%e8%a4%87%e7%9a%84%e5%b0%8d%e8%b1%a1%e5%a0%b1%e9%8c%af%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-aHVExbYFnq\">PostgreSQL 42710: \u91cd\u8907\u7684\u5c0d\u8c61\u5831\u932f\u6545\u969c\u4fee\u5fa9\u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc 42710\uff0c\u9019\u901a\u5e38\u8868\u793a\u5b58\u5728\u91cd\u8907\u7684\u5c0d\u8c61\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\uff0c\u7279\u5225\u662f\u5728\u9060\u7a0b\u74b0\u5883\u4e2d\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-42710-%e7%9a%84%e5%90%ab%e7%be%a9-aHVExbYFnq\">\u932f\u8aa4\u4ee3\u78bc 42710 \u7684\u542b\u7fa9<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42710 \u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u5275\u5efa\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u5c0d\u8c61\u6642\uff0c\u4f8b\u5982\u8868\u3001\u7d22\u5f15\u6216\u7d04\u675f\u3002\u9019\u610f\u5473\u8457\u5728\u6578\u64da\u5eab\u4e2d\u5df2\u7d93\u6709\u4e00\u500b\u540c\u540d\u7684\u5c0d\u8c61\uff0c\u5c0e\u81f4\u7576\u524d\u7684\u64cd\u4f5c\u7121\u6cd5\u5b8c\u6210\u3002<\/p>\n<h3 id=\"%e5%b8%b8%e8%a6%8b%e5%a0%b4%e6%99%af-aHVExbYFnq\">\u5e38\u898b\u5834\u666f<\/h3>\n<ul>\n<li>\u5275\u5efa\u8868\u6642\u4f7f\u7528\u4e86\u5df2\u5b58\u5728\u7684\u8868\u540d\u3002<\/li>\n<li>\u5275\u5efa\u7d22\u5f15\u6642\u4f7f\u7528\u4e86\u5df2\u5b58\u5728\u7684\u7d22\u5f15\u540d\u3002<\/li>\n<li>\u5b9a\u7fa9\u7d04\u675f\u6642\u4f7f\u7528\u4e86\u5df2\u5b58\u5728\u7684\u7d04\u675f\u540d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e9%8c%af%e8%aa%a4-aHVExbYFnq\">\u5982\u4f55\u8b58\u5225\u932f\u8aa4<\/h2>\n<p>\u7576\u4f60\u57f7\u884c SQL \u8a9e\u53e5\u6642\uff0c\u5982\u679c\u9047\u5230\u932f\u8aa4 42710\uff0cPostgreSQL \u6703\u8fd4\u56de\u4e00\u689d\u932f\u8aa4\u4fe1\u606f\uff0c\u901a\u5e38\u6703\u5305\u542b\u5c0d\u8c61\u7684\u540d\u7a31\u548c\u985e\u578b\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u4f60\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ERROR:  duplicate object \"my_table\" \nSQL state: 42710<\/code><\/pre>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-aHVExbYFnq\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8-aHVExbYFnq\">1. \u78ba\u8a8d\u5c0d\u8c61\u662f\u5426\u5b58\u5728<\/h3>\n<p>\u9996\u5148\uff0c\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u5c0d\u8c61\u662f\u5426\u5df2\u7d93\u5b58\u5728\uff1a<\/p>\n<pre><code>SELECT * FROM pg_catalog.pg_tables WHERE tablename = 'my_table';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u8fd4\u56de\u4e86\u5c0d\u8c61\uff0c\u5247\u8868\u793a\u8a72\u5c0d\u8c61\u78ba\u5be6\u5b58\u5728\u3002<\/p>\n<h3 id=\"2-%e5%88%aa%e9%99%a4%e6%88%96%e9%87%8d%e5%91%bd%e5%90%8d%e5%b0%8d%e8%b1%a1-aHVExbYFnq\">2. \u522a\u9664\u6216\u91cd\u547d\u540d\u5c0d\u8c61<\/h3>\n<p>\u5982\u679c\u78ba\u5b9a\u4e0d\u518d\u9700\u8981\u8a72\u5c0d\u8c61\uff0c\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u5b83\uff1a<\/p>\n<pre><code>DROP TABLE my_table;<\/code><\/pre>\n<p>\u5982\u679c\u9700\u8981\u4fdd\u7559\u8a72\u5c0d\u8c61\uff0c\u53ef\u4ee5\u8003\u616e\u91cd\u547d\u540d\uff1a<\/p>\n<pre><code>ALTER TABLE my_table RENAME TO my_table_old;<\/code><\/pre>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e5%89%b5%e5%bb%ba%e8%aa%9e%e5%8f%a5-aHVExbYFnq\">3. \u4fee\u6539\u5275\u5efa\u8a9e\u53e5<\/h3>\n<p>\u5728\u5275\u5efa\u65b0\u5c0d\u8c61\u6642\uff0c\u78ba\u4fdd\u4f7f\u7528\u552f\u4e00\u7684\u540d\u7a31\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE my_new_table (...);<\/code><\/pre>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e7%9a%84%e8%80%83%e9%87%8f-aHVExbYFnq\">\u9060\u7a0b\u8655\u7406\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u9060\u7a0b\u74b0\u5883\u4e2d\uff0c\u8655\u7406 PostgreSQL \u932f\u8aa4\u6642\u9700\u8981\u7279\u5225\u6ce8\u610f\u9023\u63a5\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u9060\u7a0b\u9023\u63a5\u7684\u7a69\u5b9a\u6027\uff0c\u907f\u514d\u56e0\u7db2\u7d61\u554f\u984c\u5c0e\u81f4\u7684\u64cd\u4f5c\u4e2d\u65b7\u3002<\/li>\n<li>\u5728\u9032\u884c\u4efb\u4f55\u522a\u9664\u6216\u4fee\u6539\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u907f\u514d\u90e8\u5206\u64cd\u4f5c\u6210\u529f\u800c\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-aHVExbYFnq\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42710 \u901a\u5e38\u662f\u7531\u65bc\u5c0d\u8c61\u91cd\u8907\u9020\u6210\u7684\uff0c\u901a\u904e\u78ba\u8a8d\u5c0d\u8c61\u7684\u5b58\u5728\u3001\u522a\u9664\u6216\u91cd\u547d\u540d\u5c0d\u8c61\u4ee5\u53ca\u4fee\u6539\u5275\u5efa\u8a9e\u53e5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5728\u9060\u7a0b\u8655\u7406\u6642\uff0c\u4fdd\u6301\u9023\u63a5\u7a69\u5b9a\u548c\u6578\u64da\u4e00\u81f4\u6027\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u652f\u6301\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3PostgreSQL 42710\u9519\u8bef\uff1a\u91cd\u8907\u7684\u5c0d\u8c61\u62a5\u9519\u7684\u6545\u969c\u4fee\u590d\u4e0e\u8fdc\u7a0b\u5904\u7406\u65b9\u6cd5\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u7a33\u5b9a\u8fd0\u884c\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-96826","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96826","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=96826"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96826\/revisions"}],"predecessor-version":[{"id":96827,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96826\/revisions\/96827"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}