{"id":96736,"date":"2024-10-20T11:56:17","date_gmt":"2024-10-20T03:56:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96736\/"},"modified":"2024-10-20T11:56:18","modified_gmt":"2024-10-20T03:56:18","slug":"postgresql-22002-null_value_no_indicator_parameter-%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","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96736\/","title":{"rendered":"PostgreSQL 22002: null_value_no_indicator_parameter \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"postgresql-22002-null_value_no_indicator_parameter-%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-aFdJZFuukR\">PostgreSQL 22002: null_value_no_indicator_parameter \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 <code>22002: null_value_no_indicator_parameter<\/code>\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u6642\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406 NULL \u503c\u7684\u60c5\u6cc1\u4e0b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\u548c\u9060\u7a0b\u8655\u7406\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-aFdJZFuukR\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>PostgreSQL \u7684 <code>22002<\/code> \u932f\u8aa4\u4ee3\u78bc\u8868\u793a\u5728\u57f7\u884c SQL \u67e5\u8a62\u6642\u51fa\u73fe\u4e86\u554f\u984c\uff0c\u5177\u9ad4\u4f86\u8aaa\u662f\u56e0\u70ba\u7f3a\u5c11\u6307\u793a NULL \u503c\u7684\u53c3\u6578\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\uff1a\u7576\u67e5\u8a62\u4e2d\u6d89\u53ca\u7684\u6578\u64da\u985e\u578b\u8207\u6578\u64da\u5eab\u4e2d\u5b9a\u7fa9\u7684\u985e\u578b\u4e0d\u5339\u914d\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li>\u672a\u6b63\u78ba\u8655\u7406 NULL \u503c\uff1a\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u672a\u80fd\u6b63\u78ba\u8655\u7406 NULL \u503c\uff0c\u5c0e\u81f4\u67e5\u8a62\u5931\u6557\u3002<\/li>\n<li>\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u51fd\u6578\u6216\u64cd\u4f5c\uff1a\u67d0\u4e9b SQL \u51fd\u6578\u5728\u8655\u7406 NULL \u503c\u6642\u9700\u8981\u7279\u5b9a\u7684\u53c3\u6578\uff0c\u5982\u679c\u672a\u63d0\u4f9b\u9019\u4e9b\u53c3\u6578\uff0c\u5247\u6703\u5f15\u767c\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-aFdJZFuukR\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 <code>22002: null_value_no_indicator_parameter<\/code> \u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5-sql-%e6%9f%a5%e8%a9%a2-aFdJZFuukR\">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\u6240\u6709\u7684\u53c3\u6578\u90fd\u6b63\u78ba\u50b3\u905e\uff0c\u7279\u5225\u662f\u6d89\u53ca NULL \u503c\u7684\u90e8\u5206\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE id = $1;<\/code><\/pre>\n<p>\u5982\u679c $1 \u662f NULL\uff0c\u5247\u9700\u8981\u78ba\u4fdd\u67e5\u8a62\u80fd\u5920\u6b63\u78ba\u8655\u7406\u9019\u7a2e\u60c5\u6cc1\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-coalesce-%e5%87%bd%e6%95%b8-aFdJZFuukR\">2. \u4f7f\u7528 COALESCE \u51fd\u6578<\/h3>\n<p>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528 <code>COALESCE<\/code> \u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u8655\u7406 NULL \u503c\u3002\u9019\u500b\u51fd\u6578\u6703\u8fd4\u56de\u7b2c\u4e00\u500b\u975e NULL \u7684\u53c3\u6578\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT COALESCE(name, '\u672a\u77e5') FROM users WHERE id = $1;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u5373\u4f7f <code>name<\/code> \u70ba NULL\uff0c\u67e5\u8a62\u4e5f\u4e0d\u6703\u5931\u6557\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-aFdJZFuukR\">3. \u6aa2\u67e5\u6578\u64da\u985e\u578b<\/h3>\n<p>\u78ba\u4fdd\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u6578\u64da\u985e\u578b\u8207\u6578\u64da\u5eab\u4e2d\u5b9a\u7fa9\u7684\u985e\u578b\u4e00\u81f4\u3002\u5982\u679c\u9700\u8981\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>CAST<\/code> \u51fd\u6578\u9032\u884c\u985e\u578b\u8f49\u63db\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE age = CAST($1 AS INTEGER);<\/code><\/pre>\n<h3 id=\"4-%e6%9b%b4%e6%96%b0-postgresql-%e7%89%88%e6%9c%ac-aFdJZFuukR\">4. \u66f4\u65b0 PostgreSQL \u7248\u672c<\/h3>\n<p>\u6709\u6642\u5019\uff0c\u932f\u8aa4\u53ef\u80fd\u662f\u7531\u65bc PostgreSQL \u7684\u67d0\u4e9b\u7248\u672c\u5b58\u5728\u5df2\u77e5\u7684 bug\u3002\u6aa2\u67e5\u662f\u5426\u6709\u53ef\u7528\u7684\u66f4\u65b0\uff0c\u4e26\u8003\u616e\u5347\u7d1a\u5230\u6700\u65b0\u7248\u672c\u3002<\/p>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-aFdJZFuukR\">\u9060\u7a0b\u8655\u7406<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u7121\u6cd5\u76f4\u63a5\u8a2a\u554f\u6578\u64da\u5eab\u4f3a\u670d\u5668\uff0c\u9019\u6642\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9060\u7a0b\u8655\u7406\u5de5\u5177\u4f86\u89e3\u6c7a\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u9060\u7a0b\u8655\u7406\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>SSH \u9023\u63a5\uff1a<\/strong>\u901a\u904e SSH \u9023\u63a5\u5230\u4f3a\u670d\u5668\uff0c\u7136\u5f8c\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\uff08\u5982 psql\uff09\u57f7\u884c\u67e5\u8a62\u548c\u6545\u969c\u6392\u9664\u3002<\/li>\n<li><strong>\u9060\u7a0b\u684c\u9762\uff1a<\/strong>\u5982\u679c\u4f3a\u670d\u5668\u4e0a\u5b89\u88dd\u4e86\u5716\u5f62\u754c\u9762\uff0c\u53ef\u4ee5\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u5de5\u5177\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff1a<\/strong>\u4f7f\u7528\u5982 pgAdmin \u7b49\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff0c\u9019\u4e9b\u5de5\u5177\u901a\u5e38\u652f\u6301\u9060\u7a0b\u9023\u63a5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u9032\u884c\u67e5\u8a62\u548c\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-aFdJZFuukR\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684 <code>22002: null_value_no_indicator_parameter<\/code> \u932f\u8aa4\u53ef\u80fd\u6703\u5c0d\u958b\u767c\u8005\u9020\u6210\u56f0\u64fe\uff0c\u4f46\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5 SQL \u67e5\u8a62\u3001\u4f7f\u7528\u9069\u7576\u7684\u51fd\u6578\u548c\u78ba\u4fdd\u6578\u64da\u985e\u578b\u4e00\u81f4\u6027\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u6b64\u5916\uff0c\u9060\u7a0b\u8655\u7406\u5de5\u5177\u7684\u4f7f\u7528\u4e5f\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728\u7121\u6cd5\u76f4\u63a5\u8a2a\u554f\u4f3a\u670d\u5668\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u6545\u969c\u6392\u9664\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u5c07\u662f\u660e\u667a\u4e4b\u8209\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to troubleshoot and fix the PostgreSQL 22002: null_value_no_indicator_parameter error with remote handling solutions.<\/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-96736","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96736","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=96736"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96736\/revisions"}],"predecessor-version":[{"id":96737,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96736\/revisions\/96737"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}