{"id":178994,"date":"2024-11-08T22:07:20","date_gmt":"2024-11-08T14:07:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178994\/"},"modified":"2024-11-08T22:07:21","modified_gmt":"2024-11-08T14:07:21","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a42704-undefined_object%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178994\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42704 &#8211; undefined_object\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a42704-undefined_object-nHXNFKNIoK\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42704 &#8211; undefined_object<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc 42704\uff0c\u8868\u793a\u300cundefined_object\u300d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u4e86\u4e0d\u5b58\u5728\u7684\u5c0d\u8c61\uff0c\u4f8b\u5982\u8868\u3001\u5217\u6216\u7d22\u5f15\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u4fee\u5fa9\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-42704-%e7%9a%84%e5%8e%9f%e5%9b%a0-nHXNFKNIoK\">\u932f\u8aa4\u4ee3\u78bc 42704 \u7684\u539f\u56e0<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42704 \u901a\u5e38\u8868\u793a\u67e5\u8a62\u4e2d\u5f15\u7528\u7684\u5c0d\u8c61\u672a\u88ab\u5b9a\u7fa9\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u5c0d\u8c61\u540d\u7a31\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u5728 SQL \u67e5\u8a62\u4e2d\u5c0d\u5c0d\u8c61\u540d\u7a31\u7684\u62fc\u5beb\u4e0d\u6b63\u78ba\uff0cPostgreSQL \u5c07\u7121\u6cd5\u627e\u5230\u8a72\u5c0d\u8c61\u3002<\/li>\n<li><strong>\u5c0d\u8c61\u4e0d\u5b58\u5728\uff1a<\/strong>\u5982\u679c\u60a8\u5617\u8a66\u8a2a\u554f\u7684\u8868\u6216\u5217\u5df2\u88ab\u522a\u9664\u6216\u5f9e\u672a\u5275\u5efa\uff0c\u5247\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u6a21\u5f0f\uff1a<\/strong>PostgreSQL \u652f\u6301\u591a\u500b\u6a21\u5f0f\uff08schema\uff09\uff0c\u5982\u679c\u5c0d\u8c61\u5b58\u5728\u65bc\u4e0d\u540c\u7684\u6a21\u5f0f\u4e2d\uff0c\u4f46\u67e5\u8a62\u672a\u6307\u5b9a\u6b63\u78ba\u7684\u6a21\u5f0f\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5927\u5c0f\u5beb\u654f\u611f\u554f\u984c\uff1a<\/strong>PostgreSQL \u5c0d\u65bc\u672a\u52a0\u5f15\u865f\u7684\u5c0d\u8c61\u540d\u7a31\u662f\u5927\u5c0f\u5beb\u4e0d\u654f\u611f\u7684\uff0c\u4f46\u5982\u679c\u4f7f\u7528\u4e86\u5f15\u865f\uff0c\u5247\u5c0d\u8c61\u540d\u7a31\u5c07\u8b8a\u5f97\u5927\u5c0f\u5beb\u654f\u611f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-42704-nHXNFKNIoK\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc 42704<\/h2>\n<p>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42704 \u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u932f\u8aa4\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%b0%8d%e8%b1%a1%e5%90%8d%e7%a8%b1%e7%9a%84%e6%8b%bc%e5%af%ab-nHXNFKNIoK\">1. \u6aa2\u67e5\u5c0d\u8c61\u540d\u7a31\u7684\u62fc\u5beb<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5 SQL \u67e5\u8a62\u4e2d\u5c0d\u5c0d\u8c61\u540d\u7a31\u7684\u62fc\u5beb\u662f\u5426\u6b63\u78ba\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u8acb\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u6b63\u78ba\u5f15\u7528\u5b83\uff1a<\/p>\n<pre><code>SELECT * FROM employees;<\/code><\/pre>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e5%b0%8d%e8%b1%a1%e6%98%af%e5%90%a6%e5%ad%98%e5%9c%a8-nHXNFKNIoK\">2. \u78ba\u8a8d\u5c0d\u8c61\u662f\u5426\u5b58\u5728<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u5c0d\u8c61\u662f\u5426\u5b58\u5728\uff1a<\/p>\n<pre><code>SELECT * FROM information_schema.tables WHERE table_name = 'employees';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u70ba\u7a7a\uff0c\u5247\u8868\u793a\u8a72\u8868\u4e0d\u5b58\u5728\uff0c\u60a8\u9700\u8981\u5275\u5efa\u5b83\u6216\u6aa2\u67e5\u5176\u4ed6\u53ef\u80fd\u7684\u932f\u8aa4\u3002<\/p>\n<h3 id=\"3-%e6%8c%87%e5%ae%9a%e6%ad%a3%e7%a2%ba%e7%9a%84%e6%a8%a1%e5%bc%8f-nHXNFKNIoK\">3. \u6307\u5b9a\u6b63\u78ba\u7684\u6a21\u5f0f<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u5c0d\u8c61\u5b58\u5728\u65bc\u7279\u5b9a\u7684\u6a21\u5f0f\u4e2d\uff0c\u8acb\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u6307\u5b9a\u8a72\u6a21\u5f0f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM public.employees;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd PostgreSQL \u80fd\u5920\u627e\u5230\u6b63\u78ba\u7684\u5c0d\u8c61\u3002<\/p>\n<h3 id=\"4-%e8%99%95%e7%90%86%e5%a4%a7%e5%b0%8f%e5%af%ab%e6%95%8f%e6%84%9f%e5%95%8f%e9%a1%8c-nHXNFKNIoK\">4. \u8655\u7406\u5927\u5c0f\u5beb\u654f\u611f\u554f\u984c<\/h3>\n<p>\u5982\u679c\u60a8\u5728\u5275\u5efa\u5c0d\u8c61\u6642\u4f7f\u7528\u4e86\u5f15\u865f\uff0c\u8acb\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u4e5f\u4f7f\u7528\u76f8\u540c\u7684\u5927\u5c0f\u5beb\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>\"Employees\"<\/code> \u7684\u8868\uff0c\u5247\u67e5\u8a62\u61c9\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>SELECT * FROM \"Employees\";<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nHXNFKNIoK\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42704 &#8211; undefined_object \u901a\u5e38\u662f\u7531\u65bc\u5c0d\u8c61\u540d\u7a31\u62fc\u5beb\u932f\u8aa4\u3001\u5c0d\u8c61\u4e0d\u5b58\u5728\u3001\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u6a21\u5f0f\u6216\u5927\u5c0f\u5beb\u654f\u611f\u554f\u984c\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u5c0d\u8c61\u540d\u7a31\u3001\u78ba\u8a8d\u5c0d\u8c61\u5b58\u5728\u3001\u6307\u5b9a\u6b63\u78ba\u7684\u6a21\u5f0f\u4ee5\u53ca\u8655\u7406\u5927\u5c0f\u5beb\u554f\u984c\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u4e14\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u958b\u767c\u6e2c\u8a66\u9084\u662f\u751f\u7522\u74b0\u5883\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42704 &#8211; undefined_object\uff0c\u89e3\u6c7a\u8cc7\u6599\u5eab\u4e2d\u5c0d\u8c61\u672a\u5b9a\u7fa9\u7684\u554f\u984c\uff0c\u6062\u5fa9\u6b63\u5e38\u904b\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-178994","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178994","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=178994"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178994\/revisions"}],"predecessor-version":[{"id":178995,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178994\/revisions\/178995"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}