{"id":96820,"date":"2024-10-20T12:38:16","date_gmt":"2024-10-20T04:38:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96820\/"},"modified":"2024-10-20T12:38:17","modified_gmt":"2024-10-20T04:38:17","slug":"postgresql-42701-%e9%87%8d%e8%a4%87%e7%9a%84%e5%88%97-%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\/96820\/","title":{"rendered":"PostgreSQL 42701: \u91cd\u8907\u7684\u5217 \u62a5\u9519 \u6545\u969c\u4fee\u590d \u8fdc\u7a0b\u5904\u7406"},"content":{"rendered":"<h1 id=\"postgresql-42701-%e9%87%8d%e8%a4%87%e7%9a%84%e5%88%97%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-BlTPfTZDvk\">PostgreSQL 42701: \u91cd\u8907\u7684\u5217\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\u4fbf\u662f\u300c<code>42701<\/code>: \u91cd\u8907\u7684\u5217\u300d\u5831\u932f\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u57f7\u884c SQL \u67e5\u8a62\u6642\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u6216 <code>INSERT<\/code> \u8a9e\u53e5\u6642\uff0c\u7576\u67e5\u8a62\u4e2d\u5305\u542b\u4e86\u91cd\u8907\u7684\u5217\u540d\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u6210\u56e0\u3001\u89e3\u6c7a\u65b9\u6848\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u9060\u7a0b\u8655\u7406\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e6%88%90%e5%9b%a0-BlTPfTZDvk\">\u932f\u8aa4\u6210\u56e0<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc <code>42701<\/code> \u901a\u5e38\u8868\u793a\u5728 SQL \u67e5\u8a62\u4e2d\u51fa\u73fe\u4e86\u91cd\u8907\u7684\u5217\u540d\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>SELECT \u8a9e\u53e5\u4e2d\u7684\u91cd\u8907\u5217\u540d\uff1a<\/strong>\u7576\u5728 <code>SELECT<\/code> \u8a9e\u53e5\u4e2d\u9078\u64c7\u4e86\u76f8\u540c\u7684\u5217\u591a\u6b21\u6642\uff0c\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>SELECT column_name, column_name FROM table_name;<\/code><\/pre>\n<ul>\n<li><strong>INSERT \u8a9e\u53e5\u4e2d\u7684\u91cd\u8907\u5217\u540d\uff1a<\/strong>\u5728 <code>INSERT<\/code> \u8a9e\u53e5\u4e2d\uff0c\u5982\u679c\u6307\u5b9a\u4e86\u91cd\u8907\u7684\u5217\u540d\uff0c\u4e5f\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>INSERT INTO table_name (column_name, column_name) VALUES (value1, value2);<\/code><\/pre>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-BlTPfTZDvk\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 PostgreSQL \u7684 <code>42701<\/code> \u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u6aa2\u67e5 SQL \u67e5\u8a62\u4e26\u78ba\u4fdd\u6c92\u6709\u91cd\u8907\u7684\u5217\u540d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u4fee\u5fa9\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5-sql-%e6%9f%a5%e8%a9%a2-BlTPfTZDvk\">1. \u6aa2\u67e5 SQL \u67e5\u8a62<\/h3>\n<p>\u9996\u5148\uff0c\u4ed4\u7d30\u6aa2\u67e5\u5f15\u767c\u932f\u8aa4\u7684 SQL \u67e5\u8a62\u3002\u78ba\u4fdd\u5728 <code>SELECT<\/code> \u6216 <code>INSERT<\/code> \u8a9e\u53e5\u4e2d\u6c92\u6709\u91cd\u8907\u7684\u5217\u540d\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u6aa2\u67e5\uff1a<\/p>\n<ul>\n<li>\u9010\u884c\u6aa2\u67e5\u5217\u540d\uff0c\u78ba\u4fdd\u6bcf\u500b\u5217\u540d\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li>\u4f7f\u7528 SQL \u7de8\u8f2f\u5668\u7684\u8a9e\u6cd5\u9ad8\u4eae\u529f\u80fd\uff0c\u5e6b\u52a9\u8b58\u5225\u91cd\u8907\u7684\u5217\u540d\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e4%bf%ae%e6%94%b9%e6%9f%a5%e8%a9%a2-BlTPfTZDvk\">2. \u4fee\u6539\u67e5\u8a62<\/h3>\n<p>\u4e00\u65e6\u767c\u73fe\u91cd\u8907\u7684\u5217\u540d\uff0c\u61c9\u7acb\u5373\u4fee\u6539\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5c07\u91cd\u8907\u7684\u5217\u540d\u522a\u9664\u6216\u91cd\u547d\u540d\uff1a<\/p>\n<pre><code>SELECT DISTINCT column_name FROM table_name;<\/code><\/pre>\n<h3 id=\"3-%e6%b8%ac%e8%a9%a6%e4%bf%ae%e5%be%a9-BlTPfTZDvk\">3. \u6e2c\u8a66\u4fee\u5fa9<\/h3>\n<p>\u5728\u4fee\u6539\u67e5\u8a62\u5f8c\uff0c\u91cd\u65b0\u57f7\u884c SQL \u8a9e\u53e5\u4ee5\u78ba\u8a8d\u554f\u984c\u662f\u5426\u5df2\u89e3\u6c7a\u3002\u5982\u679c\u4ecd\u7136\u51fa\u73fe\u932f\u8aa4\uff0c\u5247\u9700\u8981\u518d\u6b21\u6aa2\u67e5\u67e5\u8a62\u3002<\/p>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-BlTPfTZDvk\">\u9060\u7a0b\u8655\u7406<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u9060\u7a0b\u8655\u7406 PostgreSQL \u6578\u64da\u5eab\u4ee5\u89e3\u6c7a <code>42701<\/code> \u932f\u8aa4\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 SSH \u9023\u63a5\u5230\u4f3a\u670d\u5668\uff1a<\/strong>\u78ba\u4fdd\u60a8\u6709\u6b0a\u9650\u8a2a\u554f\u6578\u64da\u5eab\u6240\u5728\u7684\u4f3a\u670d\u5668\uff0c\u4e26\u4f7f\u7528 SSH \u9032\u884c\u9023\u63a5\u3002<\/li>\n<li><strong>\u4f7f\u7528 psql \u5de5\u5177\uff1a<\/strong>\u5728\u9023\u63a5\u5230\u4f3a\u670d\u5668\u5f8c\uff0c\u4f7f\u7528 <code>psql<\/code> \u5de5\u5177\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u547d\u4ee4\u9032\u5165 psql \u74b0\u5883\uff1a<\/li>\n<\/ul>\n<pre><code>psql -U username -d database_name<\/code><\/pre>\n<ul>\n<li><strong>\u57f7\u884c\u4fee\u5fa9\u67e5\u8a62\uff1a<\/strong>\u5728 psql \u74b0\u5883\u4e2d\u57f7\u884c\u4fee\u5fa9\u5f8c\u7684 SQL \u67e5\u8a62\uff0c\u6aa2\u67e5\u662f\u5426\u4ecd\u7136\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BlTPfTZDvk\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684 <code>42701<\/code> \u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc SQL \u67e5\u8a62\u4e2d\u5b58\u5728\u91cd\u8907\u7684\u5217\u540d\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u548c\u4fee\u6539\u67e5\u8a62\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u6b64\u5916\uff0c\u5c0d\u65bc\u9700\u8981\u9060\u7a0b\u8655\u7406\u7684\u60c5\u6cc1\uff0c\u4f7f\u7528 SSH \u548c psql \u5de5\u5177\u53ef\u4ee5\u65b9\u4fbf\u5730\u9032\u884c\u6545\u969c\u6392\u9664\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3PostgreSQL 42701\u9519\u8bef\uff1a\u91cd\u8907\u7684\u5217\u62a5\u9519\uff0c\u63d0\u4f9b\u6545\u969c\u4fee\u590d\u548c\u8fdc\u7a0b\u5904\u7406\u65b9\u6848\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u64cd\u4f5c\u987a\u5229\u8fdb\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-96820","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96820","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=96820"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96820\/revisions"}],"predecessor-version":[{"id":96821,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96820\/revisions\/96821"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}