{"id":178986,"date":"2024-11-08T22:03:23","date_gmt":"2024-11-08T14:03:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178986\/"},"modified":"2024-11-08T22:03:24","modified_gmt":"2024-11-08T14:03:24","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%9a42622-name_too_long%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178986\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42622 &#8211; name_too_long\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%9a42622-name_too_long%ef%bc%9f-QOcUVFiAGo\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42622 &#8211; name_too_long\uff1f<\/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 42622\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u986f\u793a\u70ba &#8220;name_too_long&#8221;\u3002\u9019\u500b\u932f\u8aa4\u7684\u51fa\u73fe\u901a\u5e38\u662f\u56e0\u70ba\u5728\u5275\u5efa\u6578\u64da\u5eab\u5c0d\u8c61\uff08\u5982\u8868\u3001\u5217\u3001\u7d22\u5f15\u7b49\uff09\u6642\uff0c\u6240\u4f7f\u7528\u7684\u540d\u7a31\u8d85\u904e\u4e86 PostgreSQL \u7684\u9650\u5236\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"postgresql-%e5%90%8d%e7%a8%b1%e9%95%b7%e5%ba%a6%e9%99%90%e5%88%b6-QOcUVFiAGo\">PostgreSQL \u540d\u7a31\u9577\u5ea6\u9650\u5236<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u5c0d\u65bc\u5c0d\u8c61\u540d\u7a31\u7684\u9577\u5ea6\u6709\u660e\u78ba\u7684\u9650\u5236\u3002\u6839\u64da\u5b98\u65b9\u6587\u6a94\uff0c\u5c0d\u8c61\u540d\u7a31\u7684\u6700\u5927\u9577\u5ea6\u70ba 63 \u500b\u5b57\u7b26\u3002\u5982\u679c\u60a8\u5617\u8a66\u5275\u5efa\u4e00\u500b\u540d\u7a31\u8d85\u904e\u9019\u500b\u9650\u5236\u7684\u5c0d\u8c61\uff0c\u5247\u6703\u6536\u5230\u932f\u8aa4\u4ee3\u78bc 42622\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e5%a0%b4%e6%99%af-QOcUVFiAGo\">\u5e38\u898b\u5834\u666f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u5c0e\u81f4 &#8220;name_too_long&#8221; \u932f\u8aa4\u7684\u5e38\u898b\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u5275\u5efa\u8868\u6642\uff1a<\/strong>\u7576\u60a8\u4f7f\u7528 CREATE TABLE \u8a9e\u53e5\u6642\uff0c\u5982\u679c\u8868\u540d\u6216\u5217\u540d\u8d85\u904e 63 \u500b\u5b57\u7b26\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5275\u5efa\u7d22\u5f15\u6642\uff1a<\/strong>\u985e\u4f3c\u5730\uff0c\u7576\u60a8\u5275\u5efa\u7d22\u5f15\u6642\uff0c\u7d22\u5f15\u540d\u7a31\u4e5f\u5fc5\u9808\u9075\u5faa\u76f8\u540c\u7684\u9577\u5ea6\u9650\u5236\u3002<\/li>\n<li><strong>\u4f7f\u7528\u8907\u96dc\u7684\u547d\u540d\u898f\u5247\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u4f7f\u7528\u904e\u65bc\u8907\u96dc\u7684\u547d\u540d\u898f\u5247\uff0c\u5c0e\u81f4\u540d\u7a31\u904e\u9577\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-QOcUVFiAGo\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42622 \u7684\u65b9\u6cd5\u4e3b\u8981\u662f\u7e2e\u77ed\u5c0d\u8c61\u540d\u7a31\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u6b65\u9a5f\u548c\u5efa\u8b70\uff1a<\/p>\n<h3 id=\"1-%e7%b8%ae%e7%9f%ad%e5%90%8d%e7%a8%b1-QOcUVFiAGo\">1. \u7e2e\u77ed\u540d\u7a31<\/h3>\n<p>\u6aa2\u67e5\u60a8\u5275\u5efa\u7684\u5c0d\u8c61\u540d\u7a31\uff0c\u4e26\u78ba\u4fdd\u5b83\u5011\u4e0d\u8d85\u904e 63 \u500b\u5b57\u7b26\u3002\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u7c21\u77ed\u7684\u7e2e\u5beb\u6216\u7c21\u5316\u540d\u7a31\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE very_long_table_name_that_exceeds_limit (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(255)\n);\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u6539\u70ba\uff1a<\/p>\n<pre><code>CREATE TABLE short_name (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(255)\n);\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%88%a5%e5%90%8d-QOcUVFiAGo\">2. \u4f7f\u7528\u5225\u540d<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5225\u540d\u4f86\u7c21\u5316\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5728 SELECT \u8a9e\u53e5\u4e2d\u4f7f\u7528 AS \u4f86\u7d66\u5217\u6216\u8868\u6307\u5b9a\u7c21\u77ed\u7684\u5225\u540d\uff1a<\/p>\n<pre><code>SELECT very_long_column_name AS short_name FROM very_long_table_name;\n<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e8%87%aa%e5%8b%95%e7%94%9f%e6%88%90%e7%9a%84%e5%90%8d%e7%a8%b1-QOcUVFiAGo\">3. \u6aa2\u67e5\u81ea\u52d5\u751f\u6210\u7684\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u60a8\u4f7f\u7528 ORM\uff08\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff09\u5de5\u5177\uff0c\u8acb\u6aa2\u67e5\u81ea\u52d5\u751f\u6210\u7684\u540d\u7a31\u662f\u5426\u8d85\u904e\u9650\u5236\u3002\u60a8\u53ef\u4ee5\u5728\u914d\u7f6e\u4e2d\u8a2d\u7f6e\u81ea\u5b9a\u7fa9\u540d\u7a31\u6216\u4f7f\u7528\u7c21\u77ed\u7684\u547d\u540d\u898f\u5247\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QOcUVFiAGo\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42622 &#8211; name_too_long \u901a\u5e38\u662f\u7531\u65bc\u5c0d\u8c61\u540d\u7a31\u8d85\u904e\u4e86 63 \u500b\u5b57\u7b26\u7684\u9650\u5236\u3002\u901a\u904e\u7e2e\u77ed\u540d\u7a31\u3001\u4f7f\u7528\u5225\u540d\u4ee5\u53ca\u6aa2\u67e5\u81ea\u52d5\u751f\u6210\u7684\u540d\u7a31\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u4e86\u89e3\u9019\u4e9b\u9650\u5236\u548c\u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u60a8\u7684\u6578\u64da\u5eab\u7ba1\u7406\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42622 &#8211; name_too_long\uff0c\u89e3\u6c7a\u540d\u7a31\u904e\u9577\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u9806\u5229\u9032\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-178986","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178986","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=178986"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178986\/revisions"}],"predecessor-version":[{"id":178987,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178986\/revisions\/178987"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}