{"id":96886,"date":"2024-10-20T13:11:16","date_gmt":"2024-10-20T05:11:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96886\/"},"modified":"2024-10-20T13:11:17","modified_gmt":"2024-10-20T05:11:17","slug":"postgresql-p0002-%e6%9c%aa%e6%89%be%e5%88%b0%e6%95%b8%e6%93%9a-%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\/96886\/","title":{"rendered":"PostgreSQL P0002: \u672a\u627e\u5230\u6578\u64da \u62a5\u9519 \u6545\u969c\u4fee\u590d \u8fdc\u7a0b\u5904\u7406"},"content":{"rendered":"<h1 id=\"postgresql-p0002-%e6%9c%aa%e6%89%be%e5%88%b0%e6%95%b8%e6%93%9a%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-nIIkvlGsUj\">PostgreSQL P0002: \u672a\u627e\u5230\u6578\u64da\u5831\u932f\u6545\u969c\u4fee\u5fa9\u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662fP0002\uff1a\u672a\u627e\u5230\u6578\u64da\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8868\u793a\u5728\u57f7\u884c\u67e5\u8a62\u6642\uff0c\u7cfb\u7d71\u7121\u6cd5\u627e\u5230\u6240\u8acb\u6c42\u7684\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\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\u8655\u7406\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-nIIkvlGsUj\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>PostgreSQL\u7684P0002\u932f\u8aa4\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u5f15\u8d77\uff1a<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u8a9e\u6cd5\u932f\u8aa4\uff1a<\/strong>\u5982\u679cSQL\u67e5\u8a62\u7684\u8a9e\u6cd5\u4e0d\u6b63\u78ba\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u7121\u6cd5\u6b63\u78ba\u6aa2\u7d22\u3002<\/li>\n<li><strong>\u6578\u64da\u4e0d\u5b58\u5728\uff1a<\/strong>\u67e5\u8a62\u7684\u689d\u4ef6\u53ef\u80fd\u904e\u65bc\u56b4\u683c\uff0c\u5c0e\u81f4\u6c92\u6709\u7b26\u5408\u689d\u4ef6\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6b0a\u9650\u554f\u984c\uff1a<\/strong>\u7528\u6236\u53ef\u80fd\u6c92\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u8a2a\u554f\u7279\u5b9a\u7684\u6578\u64da\u8868\u6216\u6578\u64da\u884c\u3002<\/li>\n<li><strong>\u9023\u63a5\u554f\u984c\uff1a<\/strong>\u5728\u9060\u7a0b\u8655\u7406\u6642\uff0c\u7db2\u7d61\u9023\u63a5\u4e0d\u7a69\u5b9a\u6216\u914d\u7f6e\u932f\u8aa4\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u7121\u6cd5\u6aa2\u7d22\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%85%e9%9a%9c%e6%8e%92%e9%99%a4%e6%ad%a5%e9%a9%9f-nIIkvlGsUj\">\u6545\u969c\u6392\u9664\u6b65\u9a5f<\/h2>\n<p>\u7576\u9047\u5230P0002\u932f\u8aa4\u6642\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u6545\u969c\u6392\u9664\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%9f%a5%e8%a9%a2%e8%aa%9e%e6%b3%95-nIIkvlGsUj\">1. \u6aa2\u67e5\u67e5\u8a62\u8a9e\u6cd5<\/h3>\n<pre><code>SELECT * FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u78ba\u4fddSQL\u67e5\u8a62\u7684\u8a9e\u6cd5\u6b63\u78ba\uff0c\u4e26\u4e14\u6240\u6709\u7684\u8868\u540d\u548c\u5217\u540d\u90fd\u62fc\u5beb\u7121\u8aa4\u3002<\/p>\n<h3 id=\"2-%e9%a9%97%e8%ad%89%e6%95%b8%e6%93%9a%e5%ad%98%e5%9c%a8%e6%80%a7-nIIkvlGsUj\">2. \u9a57\u8b49\u6578\u64da\u5b58\u5728\u6027<\/h3>\n<p>\u4f7f\u7528\u7c21\u55ae\u7684\u67e5\u8a62\u4f86\u6aa2\u67e5\u6578\u64da\u662f\u5426\u5b58\u5728\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT COUNT(*) FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u8a8d\u662f\u5426\u6709\u7b26\u5408\u689d\u4ef6\u7684\u6578\u64da\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e7%94%a8%e6%88%b6%e6%ac%8a%e9%99%90-nIIkvlGsUj\">3. \u6aa2\u67e5\u7528\u6236\u6b0a\u9650<\/h3>\n<p>\u78ba\u4fdd\u57f7\u884c\u67e5\u8a62\u7684\u7528\u6236\u64c1\u6709\u8a2a\u554f\u6240\u9700\u6578\u64da\u7684\u6b0a\u9650\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u7528\u6236\u6b0a\u9650\uff1a<\/p>\n<pre><code>SELECT has_table_privilege('username', 'table_name', 'SELECT');<\/code><\/pre>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e9%80%a3%e6%8e%a5%e7%8b%80%e6%85%8b-nIIkvlGsUj\">4. \u6aa2\u67e5\u9023\u63a5\u72c0\u614b<\/h3>\n<p>\u5728\u9060\u7a0b\u8655\u7406\u7684\u60c5\u6cc1\u4e0b\uff0c\u6aa2\u67e5\u7db2\u7d61\u9023\u63a5\u662f\u5426\u7a69\u5b9a\u3002\u53ef\u4ee5\u4f7f\u7528ping\u547d\u4ee4\u4f86\u6e2c\u8a66\u9023\u63a5\uff1a<\/p>\n<pre><code>ping your_database_host<\/code><\/pre>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-nIIkvlGsUj\">\u9060\u7a0b\u8655\u7406\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u9032\u884c\u9060\u7a0b\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u53ef\u4ee5\u6e1b\u5c11\u932f\u8aa4\u7684\u767c\u751f\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7a69\u5b9a\u7684\u7db2\u7d61\u9023\u63a5\uff1a<\/strong>\u78ba\u4fdd\u4f7f\u7528\u9ad8\u5e36\u5bec\u548c\u4f4e\u5ef6\u9072\u7684\u7db2\u7d61\u9023\u63a5\u3002<\/li>\n<li><strong>\u5b9a\u671f\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5b9a\u671f\u5099\u4efd\u6578\u64da\u53ef\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\uff0c\u4e26\u5728\u51fa\u73fe\u554f\u984c\u6642\u5feb\u901f\u6062\u5fa9\u3002<\/li>\n<li><strong>\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff1a<\/strong>\u4f7f\u7528\u76e3\u63a7\u5de5\u5177\u4f86\u8ddf\u8e2a\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-nIIkvlGsUj\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL\u7684P0002\u932f\u8aa4\u53ef\u80fd\u6703\u5c0d\u6578\u64da\u6aa2\u7d22\u9020\u6210\u56f0\u64fe\uff0c\u4f46\u901a\u904e\u6b63\u78ba\u7684\u6545\u969c\u6392\u9664\u6b65\u9a5f\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u7121\u8ad6\u662f\u5728\u672c\u5730\u9084\u662f\u9060\u7a0b\u8655\u7406\uff0c\u4e86\u89e3\u932f\u8aa4\u7684\u6839\u672c\u539f\u56e0\u4e26\u63a1\u53d6\u76f8\u61c9\u63aa\u65bd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u63d0\u4f9b\u5546\u4e5f\u975e\u5e38\u91cd\u8981\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u53ef\u4ee5\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u548c\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3PostgreSQL P0002\u9519\u8bef\uff1a\u672a\u627e\u5230\u6570\u636e\u7684\u6545\u969c\u4fee\u590d\u4e0e\u8fdc\u7a0b\u5904\u7406\u6307\u5357\uff0c\u52a9\u60a8\u5feb\u901f\u6062\u590d\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-96886","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96886","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=96886"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96886\/revisions"}],"predecessor-version":[{"id":96887,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96886\/revisions\/96887"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}