{"id":94488,"date":"2026-08-14T15:49:58","date_gmt":"2026-08-14T07:49:58","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/94488.html"},"modified":"2026-08-14T15:49:58","modified_gmt":"2026-08-14T07:49:58","slug":"error-invalid-input-syntax-for-type-integer-a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/94488.html","title":{"rendered":"ERROR: invalid input syntax for type integer: \u201ca\u201c"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u73af\u5883<\/li>\n<li>\u75c7\u72b6<\/li>\n<li>\u95ee\u9898\u539f\u56e0<\/li>\n<li>\u89e3\u51b3\u65b9\u6848<\/li>\n<\/ul>\n<h2>\u73af\u5883<\/h2>\n<p>\u7cfb\u7edf\u5e73\u53f0&#xff1a;\u94f6\u6cb3\u9e92\u9e9f &#xff08;\u9cb2\u9e4f&#xff09; \u7248\u672c&#xff1a;4.5<\/p>\n<h2>\u75c7\u72b6<\/h2>\n<p>\u6267\u884c\u4e0b\u9762SQL\u8bed\u53e5\u65f6&#xff0c;\u62a5 \u201c\u65e0\u6548\u7684\u7c7b\u578b integer \u8f93\u5165\u8bed\u6cd5\u201d \u7684\u9519\u8bef&#xff0c;\u8be6\u7ec6\u5982\u4e0b&#xff1a;<\/p>\n<p>db_test<span class=\"token operator\">&#061;<\/span><span class=\"token comment\"># select * from t1 where v &#061; &#039;a&#039;;<\/span><br \/>\nERROR:  invalid input syntax <span class=\"token keyword\">for<\/span> <span class=\"token keyword\">type<\/span> <span class=\"token keyword\">integer<\/span>: <span class=\"token string\">&#034;a&#034;<\/span><br \/>\nLINE <span class=\"token number\">1<\/span>: <span class=\"token keyword\">select<\/span> <span class=\"token operator\">*<\/span> <span class=\"token keyword\">from<\/span> t1 <span class=\"token keyword\">where<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;a&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8bd1\u6587&#xff1a;<br \/>\n\u9519\u8bef:  \u65e0\u6548\u7684\u7c7b\u578b <span class=\"token keyword\">integer<\/span> \u8f93\u5165\u8bed\u6cd5: <span class=\"token string\">&#034;a&#034;<\/span><br \/>\n\u7b2c<span class=\"token number\">1<\/span>\u884c<span class=\"token keyword\">select<\/span> <span class=\"token operator\">*<\/span> <span class=\"token keyword\">from<\/span> t1 <span class=\"token keyword\">where<\/span> v <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;a&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h2>\u95ee\u9898\u539f\u56e0<\/h2>\n<p>\u6709\u4e24\u70b9\u539f\u56e0&#xff1a;<\/p>\n<p>1\u3001\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u4e86 varchar&#061;integer \u7684\u64cd\u4f5c\u7b26&#xff1b;<\/p>\n<p>2\u3001SQL\u8bed\u53e5\u7684\u6761\u4ef6\u503c \u2018a\u2019 \u6ca1\u6709\u6307\u5b9a\u6570\u636e\u7c7b\u578b&#xff0c;\u5728\u6570\u636e\u5e93\u4e2d\u89e3\u6790\u4e3aunknown&#xff0c;\u8868\u5b57\u6bb5 v \u662fvarchar\u7c7b\u578b\u3002<\/p>\n<p>\u57fa\u4e8e\u4ee5\u4e0a\u4e24\u70b9&#xff0c;\u5728\u9009\u62e9\u5019\u9009\u64cd\u4f5c\u7b26\u65f6&#xff0c;\u9009\u62e9\u4e86 varchar&#061;integer \u7684\u64cd\u4f5c\u7b26&#xff0c;\u800c \u2018a\u2019 \u4e0d\u662f\u6570\u5b57&#xff0c;\u6240\u4ee5\u8f6cinteger\u62a5\u9519\u3002<\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>\u65b9\u6848\u4e00&#xff1a;<\/p>\n<p>\u5bf9\u56fa\u5b9a\u503c \u2018a\u2019 \u6307\u5b9a\u4e3a\u5de6\u4fa7\u5b57\u6bb5 v \u7684\u6570\u636e\u7c7b\u578b&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>db_test&#061;# select * from t1 where v &#061; \u2018a\u2019::varchar; id | v &#8212;-\u00b1\u2013 (0 rows) \u65b9\u6848\u4e8c&#xff1a;<\/p>\n<p>\u5982\u679c varchar&#061;integer \u7684\u64cd\u4f5c\u7b26\u4e0d\u9700\u8981&#xff0c;\u5219\u76f4\u63a5\u5220\u9664\u5b83\u3002<\/p>\n<p>db_test&#061;# drop operator schemaname.&#061;(varchar, integer); \u65b9\u6848\u4e09&#xff1a;<\/p>\n<p>\u5982\u679c\u4e1a\u52a1\u4e0a\u5b58\u5728 varchar&#061;integer \u7684\u64cd\u4f5c&#xff0c;\u5219\u5efa\u8bae\u8bc4\u4f30 varchar \u548c integer \u54ea\u79cd\u7c7b\u578b\u4f7f\u7528\u9891\u7387\u9ad8&#xff0c;\u7136\u540e\u628a\u8868\u5b57\u6bb5\u6216\u8005\u4f20\u5165\u7684\u6570\u636e\u4fee\u6539\u4e3a\u7edf\u4e00\u7684\u6570\u636e\u7c7b\u578b&#xff0c;\u540c\u65f6\u5220\u9664 varchar&#061;integer \u7684\u64cd\u4f5c\u7b26\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u73af\u5883\u75c7\u72b6\u95ee\u9898\u539f\u56e0\u89e3\u51b3\u65b9\u6848\u73af\u5883<br \/>\n\u7cfb\u7edf\u5e73\u53f0&#xff1a;\u94f6\u6cb3\u9e92\u9e9f &#xff08;\u9cb2\u9e4f&#xff09; \u7248\u672c&#xff1a;4.5<br \/>\n\u75c7\u72b6<br \/>\n\u6267\u884c\u4e0b\u9762SQL\u8bed\u53e5\u65f6&#xff0c;\u62a5 \u201c\u65e0\u6548\u7684\u7c7b\u578b integer \u8f93\u5165\u8bed\u6cd5\u201d \u7684\u9519\u8bef&#xff0c;\u8be6\u7ec6\u5982\u4e0b&#xff1a;<br \/>\ndb_test# select * from t1 where v  a;<br \/>\nERROR:  invalid input syntax for type integer: \\&#8221;a\\&#8221;<br \/>\nLINE 1: se<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9432,954,100],"topic":[],"class_list":["post-94488","post","type-post","status-publish","format-standard","hentry","category-server","tag-9432","tag-postgresql","tag-100"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ERROR: invalid input syntax for type integer: \u201ca\u201c - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/94488.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ERROR: invalid input syntax for type integer: \u201ca\u201c - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u76ee\u5f55\u73af\u5883\u75c7\u72b6\u95ee\u9898\u539f\u56e0\u89e3\u51b3\u65b9\u6848\u73af\u5883 \u7cfb\u7edf\u5e73\u53f0&#xff1a;\u94f6\u6cb3\u9e92\u9e9f &#xff08;\u9cb2\u9e4f&#xff09; 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