{"id":178682,"date":"2024-11-08T20:00:19","date_gmt":"2024-11-08T12:00:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178682\/"},"modified":"2024-11-08T20:00:20","modified_gmt":"2024-11-08T12:00:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a22004-null_value_not_allowed%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178682\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a22004 &#8211; null_value_not_allowed\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a22004-null_value_not_allowed%ef%bc%9f-ZsHrvnXzFF\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a22004 &#8211; null_value_not_allowed\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\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\u78bc22004\uff0c\u8a72\u932f\u8aa4\u7684\u5177\u9ad4\u4fe1\u606f\u70ba\u201cnull_value_not_allowed\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u5c07NULL\u503c\u63d2\u5165\u5230\u4e0d\u5141\u8a31NULL\u7684\u5217\u4e2d\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u4fee\u5fa9\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc22004%e7%9a%84%e6%88%90%e5%9b%a0-ZsHrvnXzFF\">\u932f\u8aa4\u4ee3\u78bc22004\u7684\u6210\u56e0<\/h2>\n<p>PostgreSQL\u662f\u4e00\u500b\u5f37\u5927\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u689d\u4ef6\u3002\u5728\u8a2d\u8a08\u6578\u64da\u8868\u6642\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u70ba\u67d0\u4e9b\u5217\u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6\uff0c\u4f8b\u5982\u4e0d\u5141\u8a31NULL\u503c\u3002\u7576\u61c9\u7528\u7a0b\u5e8f\u5617\u8a66\u5c07NULL\u503c\u63d2\u5165\u9019\u4e9b\u5217\u6642\uff0c\u5c31\u6703\u89f8\u767c\u932f\u8aa4\u4ee3\u78bc22004\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u60c5\u6cc1\uff0c\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u7684\u767c\u751f\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u8868\u8a2d\u8a08\u554f\u984c\uff1a<\/strong>\u5728\u5275\u5efa\u6578\u64da\u8868\u6642\uff0c\u67d0\u4e9b\u5217\u88ab\u8a2d\u7f6e\u70baNOT NULL\uff0c\u4f46\u5728\u63d2\u5165\u6578\u64da\u6642\u537b\u672a\u63d0\u4f9b\u76f8\u61c9\u7684\u503c\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u932f\u8aa4\uff1a<\/strong>\u61c9\u7528\u7a0b\u5e8f\u5728\u8655\u7406\u6578\u64da\u6642\uff0c\u672a\u80fd\u6b63\u78ba\u6aa2\u67e5\u6216\u8655\u7406NULL\u503c\uff0c\u5c0e\u81f4\u5617\u8a66\u63d2\u5165NULL\u3002<\/li>\n<li><strong>\u6578\u64da\u9077\u79fb\u554f\u984c\uff1a<\/strong>\u5728\u6578\u64da\u9077\u79fb\u904e\u7a0b\u4e2d\uff0c\u67d0\u4e9b\u503c\u53ef\u80fd\u672a\u88ab\u6b63\u78ba\u8f49\u63db\u6216\u586b\u5145\uff0c\u5c0e\u81f4NULL\u503c\u7684\u51fa\u73fe\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%bc22004-ZsHrvnXzFF\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc22004<\/h2>\n<p>\u4fee\u5fa9\u6b64\u932f\u8aa4\u7684\u95dc\u9375\u5728\u65bc\u78ba\u4fdd\u6240\u6709\u4e0d\u5141\u8a31NULL\u7684\u5217\u5728\u63d2\u5165\u6578\u64da\u6642\u90fd\u6709\u6709\u6548\u7684\u503c\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%e6%95%b8%e6%93%9a%e8%a1%a8%e7%b5%90%e6%a7%8b-ZsHrvnXzFF\">1. \u6aa2\u67e5\u6578\u64da\u8868\u7d50\u69cb<\/h3>\n<pre><code>-- \u6aa2\u67e5\u8868\u7d50\u69cb\nd \u8868\u540d\n<\/code><\/pre>\n<p>\u4f7f\u7528\u4e0a\u8ff0\u547d\u4ee4\u6aa2\u67e5\u6578\u64da\u8868\u7684\u7d50\u69cb\uff0c\u78ba\u4fdd\u6240\u6709\u4e0d\u5141\u8a31NULL\u7684\u5217\u90fd\u5df2\u6b63\u78ba\u8a2d\u7f6e\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e7%9a%84%e5%ae%8c%e6%95%b4%e6%80%a7-ZsHrvnXzFF\">2. \u78ba\u8a8d\u63d2\u5165\u6578\u64da\u7684\u5b8c\u6574\u6027<\/h3>\n<p>\u5728\u63d2\u5165\u6578\u64da\u4e4b\u524d\uff0c\u61c9\u8a72\u6aa2\u67e5\u6240\u6709\u5fc5\u586b\u5b57\u6bb5\u662f\u5426\u90fd\u6709\u6709\u6548\u7684\u503c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u9032\u884c\u63d2\u5165\u64cd\u4f5c\uff1a<\/p>\n<pre><code>INSERT INTO \u8868\u540d (\u52171, \u52172, \u52173) VALUES (\u503c1, \u503c2, \u503c3);\n<\/code><\/pre>\n<p>\u78ba\u4fdd\u5728VALUES\u4e2d\u63d0\u4f9b\u7684\u6240\u6709\u503c\u90fd\u4e0d\u662fNULL\u3002<\/p>\n<h3 id=\"3-%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e9%82%8f%e8%bc%af%e6%aa%a2%e6%9f%a5-ZsHrvnXzFF\">3. \u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u6aa2\u67e5<\/h3>\n<p>\u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u7684\u908f\u8f2f\uff0c\u78ba\u4fdd\u5728\u8655\u7406\u6578\u64da\u6642\u4e0d\u6703\u610f\u5916\u5730\u5c07NULL\u503c\u50b3\u905e\u5230\u6578\u64da\u5eab\u4e2d\u3002\u53ef\u4ee5\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u4f86\u6aa2\u67e5\u503c\u662f\u5426\u70baNULL\uff1a<\/p>\n<pre><code>if (value != null) {\n    \/\/ \u57f7\u884c\u63d2\u5165\u64cd\u4f5c\n}\n<\/code><\/pre>\n<h3 id=\"4-%e6%95%b8%e6%93%9a%e9%81%b7%e7%a7%bb%e5%92%8c%e6%b8%85%e7%90%86-ZsHrvnXzFF\">4. \u6578\u64da\u9077\u79fb\u548c\u6e05\u7406<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u767c\u751f\u5728\u6578\u64da\u9077\u79fb\u904e\u7a0b\u4e2d\uff0c\u5247\u9700\u8981\u6aa2\u67e5\u9077\u79fb\u8173\u672c\uff0c\u78ba\u4fdd\u6240\u6709\u5fc5\u8981\u7684\u6578\u64da\u90fd\u5df2\u6b63\u78ba\u8f49\u79fb\u3002\u53ef\u4ee5\u4f7f\u7528UPDATE\u8a9e\u53e5\u4f86\u586b\u5145\u7f3a\u5931\u7684\u503c\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d SET \u5217\u540d = '\u9810\u8a2d\u503c' WHERE \u5217\u540d IS NULL;\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ZsHrvnXzFF\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc22004 &#8211; null_value_not_allowed\u901a\u5e38\u662f\u7531\u65bc\u5617\u8a66\u5c07NULL\u503c\u63d2\u5165\u4e0d\u5141\u8a31NULL\u7684\u5217\u800c\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u6578\u64da\u8868\u7d50\u69cb\u3001\u78ba\u8a8d\u63d2\u5165\u6578\u64da\u7684\u5b8c\u6574\u6027\u3001\u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u4ee5\u53ca\u9032\u884c\u6578\u64da\u9077\u79fb\u548c\u6e05\u7406\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\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<a href=\"https:\/\/server.hk\">VPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc22004 &#8211; null_value_not_allowed\uff0c\u89e3\u6c7a\u6578\u64da\u5eab\u4e2d\u7684\u7a7a\u503c\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\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-178682","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178682","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=178682"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178682\/revisions"}],"predecessor-version":[{"id":178683,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178682\/revisions\/178683"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}