{"id":96844,"date":"2024-10-20T12:50:17","date_gmt":"2024-10-20T04:50:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96844\/"},"modified":"2024-10-20T12:50:18","modified_gmt":"2024-10-20T04:50:18","slug":"postgresql-42p07-%e9%87%8d%e8%a4%87%e7%9a%84%e8%a1%a8-%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\/96844\/","title":{"rendered":"PostgreSQL 42P07: \u91cd\u8907\u7684\u8868 \u62a5\u9519 \u6545\u969c\u4fee\u590d \u8fdc\u7a0b\u5904\u7406"},"content":{"rendered":"<h1 id=\"postgresql-42p07-%e9%87%8d%e8%a4%87%e7%9a%84%e8%a1%a8%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-CEgLdxMXlF\">PostgreSQL 42P07: \u91cd\u8907\u7684\u8868\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 42P07\uff0c\u9019\u8868\u793a\u300c\u91cd\u8907\u7684\u8868\u300d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u5275\u5efa\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u8868\u6642\u3002\u672c\u6587\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%e5%8e%9f%e5%9b%a0-CEgLdxMXlF\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42P07 \u901a\u5e38\u51fa\u73fe\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u5617\u8a66\u5275\u5efa\u4e00\u500b\u5df2\u5b58\u5728\u7684\u8868\u3002<\/li>\n<li>\u5728\u540c\u4e00\u500b\u6578\u64da\u5eab\u4e2d\uff0c\u4f7f\u7528\u76f8\u540c\u7684\u540d\u7a31\u5275\u5efa\u591a\u500b\u8868\u3002<\/li>\n<li>\u5728\u4e0d\u540c\u7684\u6a21\u5f0f\uff08schema\uff09\u4e2d\uff0c\u4f7f\u7528\u76f8\u540c\u7684\u8868\u540d\uff0c\u4f46\u672a\u6b63\u78ba\u6307\u5b9a\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u7576\u57f7\u884c\u4ee5\u4e0b SQL \u8a9e\u53e5\u6642\uff0c\u5982\u679c\u8868 &#8220;users&#8221; \u5df2\u7d93\u5b58\u5728\uff0c\u5247\u6703\u5f15\u767c\u6b64\u932f\u8aa4\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100)\n);<\/code><\/pre>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%bd%b1%e9%9f%bf-CEgLdxMXlF\">\u932f\u8aa4\u5f71\u97ff<\/h2>\n<p>\u9019\u500b\u932f\u8aa4\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u64cd\u4f5c\u5931\u6557\uff0c\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u6b63\u5e38\u904b\u884c\u3002\u7279\u5225\u662f\u5728\u9060\u7a0b\u8655\u7406\u7684\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u7121\u6cd5\u7acb\u5373\u8b58\u5225\u554f\u984c\u7684\u6839\u6e90\uff0c\u5f9e\u800c\u5ef6\u8aa4\u4e86\u958b\u767c\u9032\u5ea6\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-CEgLdxMXlF\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 PostgreSQL 42P07 \u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e8%a1%a8%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8-CEgLdxMXlF\">1. \u6aa2\u67e5\u8868\u662f\u5426\u5b58\u5728<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u78ba\u8a8d\u8a72\u8868\u662f\u5426\u5df2\u7d93\u5b58\u5728\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT * FROM information_schema.tables \nWHERE table_name = 'users';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u986f\u793a\u8a72\u8868\u5b58\u5728\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u522a\u9664\u6216\u91cd\u547d\u540d\u8a72\u8868\u3002<\/p>\n<h3 id=\"2-%e5%88%aa%e9%99%a4%e6%88%96%e9%87%8d%e5%91%bd%e5%90%8d%e8%a1%a8-CEgLdxMXlF\">2. \u522a\u9664\u6216\u91cd\u547d\u540d\u8868<\/h3>\n<p>\u5982\u679c\u78ba\u5b9a\u4e0d\u518d\u9700\u8981\u8a72\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u522a\u9664\u5b83\uff1a<\/p>\n<pre><code>DROP TABLE users;<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u5e0c\u671b\u4fdd\u7559\u8a72\u8868\uff0c\u53ef\u4ee5\u9078\u64c7\u91cd\u547d\u540d\uff1a<\/p>\n<pre><code>ALTER TABLE users RENAME TO old_users;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e4%b8%8d%e5%90%8c%e7%9a%84%e8%a1%a8%e5%90%8d-CEgLdxMXlF\">3. \u4f7f\u7528\u4e0d\u540c\u7684\u8868\u540d<\/h3>\n<p>\u5982\u679c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500b\u65b0\u8868\uff0c\u5efa\u8b70\u4f7f\u7528\u4e0d\u540c\u7684\u540d\u7a31\u4f86\u907f\u514d\u885d\u7a81\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE new_users (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100)\n);<\/code><\/pre>\n<h3 id=\"4-%e6%8c%87%e5%ae%9a%e6%a8%a1%e5%bc%8f-CEgLdxMXlF\">4. \u6307\u5b9a\u6a21\u5f0f<\/h3>\n<p>\u5982\u679c\u60a8\u5728\u4e0d\u540c\u7684\u6a21\u5f0f\u4e2d\u4f7f\u7528\u76f8\u540c\u7684\u8868\u540d\uff0c\u8acb\u78ba\u4fdd\u5728\u5275\u5efa\u8868\u6642\u6b63\u78ba\u6307\u5b9a\u6a21\u5f0f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE my_schema.users (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100)\n);<\/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-CEgLdxMXlF\">\u9060\u7a0b\u8655\u7406\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u9060\u7a0b\u8655\u7406 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u7279\u5225\u6ce8\u610f\u9023\u63a5\u7684\u914d\u7f6e\u548c\u6b0a\u9650\u8a2d\u7f6e\u3002\u78ba\u4fdd\u60a8\u64c1\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u67e5\u770b\u548c\u4fee\u6539\u6578\u64da\u5eab\u4e2d\u7684\u8868\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u7248\u672c\u63a7\u5236\u7cfb\u7d71\u4f86\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\u7684\u8b8a\u66f4\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u6b64\u985e\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-CEgLdxMXlF\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL 42P07 \u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u91cd\u8907\u7684\u8868\u540d\u5f15\u8d77\u7684\uff0c\u901a\u904e\u6aa2\u67e5\u8868\u7684\u5b58\u5728\u6027\u3001\u522a\u9664\u6216\u91cd\u547d\u540d\u8868\u3001\u4f7f\u7528\u4e0d\u540c\u7684\u8868\u540d\u4ee5\u53ca\u6b63\u78ba\u6307\u5b9a\u6a21\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5728\u9060\u7a0b\u8655\u7406\u74b0\u5883\u4e2d\uff0c\u4fdd\u6301\u826f\u597d\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7fd2\u6163\u548c\u6b0a\u9650\u8a2d\u7f6e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u6258\u7ba1\u60a8\u7684 PostgreSQL \u6578\u64da\u5eab\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3PostgreSQL 42P07\u9519\u8bef\uff1a\u91cd\u8907\u7684\u8868\u95ee\u9898\uff0c\u63d0\u4f9b\u6545\u969c\u4fee\u590d\u548c\u8fdc\u7a0b\u5904\u7406\u65b9\u6848\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u6b63\u5e38\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-96844","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96844","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=96844"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96844\/revisions"}],"predecessor-version":[{"id":96845,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96844\/revisions\/96845"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}