{"id":91996,"date":"2024-10-19T01:55:19","date_gmt":"2024-10-18T17:55:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/91996\/"},"modified":"2024-10-19T01:55:19","modified_gmt":"2024-10-18T17:55:19","slug":"ora-38420-%e5%ad%98%e5%84%b2%e7%9a%84%e5%b1%ac%e6%80%a7%e5%ad%90%e8%a1%a8%e9%81%94%e5%bc%8f%e7%84%a1%e6%95%88%ef%bc%9astring-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/91996\/","title":{"rendered":"ORA-38420: \u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\uff1astring ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-38420-%e5%ad%98%e5%84%b2%e7%9a%84%e5%b1%ac%e6%80%a7%e5%ad%90%e8%a1%a8%e9%81%94%e5%bc%8f%e7%84%a1%e6%95%88%ef%bc%9astring-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0-WLfPNfrcYx\">ORA-38420: \u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\uff1astring ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528Oracle\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662fORA-38420\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207\u5b58\u5132\u7684\u5c6c\u6027\uff08Stored Attribute\uff09\u6709\u95dc\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u865b\u64ec\u5217\u6216\u7269\u5316\u8996\u5716\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eORA-38420\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\u3002<\/p>\n<h2 id=\"ora-38420%e7%9a%84%e5%8e%9f%e5%9b%a0-WLfPNfrcYx\">ORA-38420\u7684\u539f\u56e0<\/h2>\n<p>ORA-38420\u932f\u8aa4\u7684\u4e3b\u8981\u539f\u56e0\u662f\u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\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\u3002<\/li>\n<li>\u8868\u9054\u5f0f\u4e2d\u5305\u542b\u4e86\u4e0d\u652f\u6301\u7684\u51fd\u6578\u6216\u904b\u7b97\u7b26\u3002<\/li>\n<li>\u5f15\u7528\u4e86\u4e0d\u5b58\u5728\u7684\u5217\u6216\u8868\u3002<\/li>\n<li>\u5728\u7269\u5316\u8996\u5716\u4e2d\uff0c\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u67e5\u8a62\u8a9e\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u60a8\u5728\u5275\u5efa\u4e00\u500b\u865b\u64ec\u5217\u6642\uff0c\u4f7f\u7528\u4e86\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE TABLE example (\n    id NUMBER,\n    name VARCHAR2(50),\n    virtual_col AS (name || ' - ' || id)\n);<\/code><\/pre>\n<p>\u5982\u679c\u5728\u9019\u500b\u8868\u4e2d\uff0c\u60a8\u5617\u8a66\u4f7f\u7528\u4e00\u500b\u4e0d\u652f\u6301\u7684\u51fd\u6578\uff0c\u5247\u53ef\u80fd\u6703\u5c0e\u81f4ORA-38420\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e9%8c%af%e8%aa%a4-WLfPNfrcYx\">\u5982\u4f55\u8b58\u5225\u932f\u8aa4<\/h2>\n<p>\u7576\u60a8\u9047\u5230ORA-38420\u932f\u8aa4\u6642\uff0cOracle\u6578\u64da\u5eab\u6703\u8fd4\u56de\u4e00\u689d\u932f\u8aa4\u6d88\u606f\uff0c\u901a\u5e38\u6703\u5305\u542b\u5177\u9ad4\u7684\u5b50\u8868\u9054\u5f0f\u3002\u9019\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ORA-38420: \u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\uff1a'name || ' - ' || id'<\/code><\/pre>\n<p>\u9019\u689d\u6d88\u606f\u544a\u8a34\u60a8\uff0c\u554f\u984c\u51fa\u5728\u865b\u64ec\u5217\u7684\u5b9a\u7fa9\u4e0a\u3002\u60a8\u9700\u8981\u6aa2\u67e5\u8a72\u8868\u9054\u5f0f\uff0c\u78ba\u4fdd\u6240\u6709\u5f15\u7528\u7684\u5217\u548c\u51fd\u6578\u90fd\u662f\u6709\u6548\u7684\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-WLfPNfrcYx\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u4fee\u5fa9ORA-38420\u932f\u8aa4\u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li><strong>\u6aa2\u67e5\u8868\u9054\u5f0f\uff1a<\/strong>\u9996\u5148\uff0c\u4ed4\u7d30\u6aa2\u67e5\u5f15\u767c\u932f\u8aa4\u7684\u8868\u9054\u5f0f\uff0c\u78ba\u4fdd\u6240\u6709\u5217\u548c\u51fd\u6578\u90fd\u662f\u6b63\u78ba\u7684\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u5b50\u8868\u9054\u5f0f\uff1a<\/strong>\u53ef\u4ee5\u5728SQL\u67e5\u8a62\u4e2d\u55ae\u7368\u6e2c\u8a66\u5b50\u8868\u9054\u5f0f\uff0c\u4ee5\u78ba\u4fdd\u5176\u8fd4\u56de\u6b63\u78ba\u7684\u7d50\u679c\u3002<\/li>\n<li><strong>\u67e5\u770b\u6578\u64da\u985e\u578b\uff1a<\/strong>\u78ba\u4fdd\u6240\u6709\u53c3\u8207\u904b\u7b97\u7684\u5217\u5177\u6709\u517c\u5bb9\u7684\u6578\u64da\u985e\u578b\u3002<\/li>\n<li><strong>\u67e5\u95b1\u6587\u6a94\uff1a<\/strong>\u53c3\u8003Oracle\u5b98\u65b9\u6587\u6a94\uff0c\u4e86\u89e3\u652f\u6301\u7684\u51fd\u6578\u548c\u904b\u7b97\u7b26\u3002<\/li>\n<li><strong>\u91cd\u5efa\u7269\u5316\u8996\u5716\uff1a<\/strong>\u5982\u679c\u932f\u8aa4\u767c\u751f\u5728\u7269\u5316\u8996\u5716\u4e2d\uff0c\u8003\u616e\u522a\u9664\u4e26\u91cd\u65b0\u5275\u5efa\u8a72\u8996\u5716\u3002<\/li>\n<\/ol>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e7%9a%84%e8%80%83%e9%87%8f-WLfPNfrcYx\">\u9060\u7a0b\u8655\u7406\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u9032\u884c\u9060\u7a0b\u8655\u7406\u4f86\u89e3\u6c7aORA-38420\u932f\u8aa4\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u6216SSH\u9023\u63a5\u5230\u6578\u64da\u5eab\u4f3a\u670d\u5668\u3002<\/li>\n<li>\u6aa2\u67e5\u6578\u64da\u5eab\u65e5\u8a8c\u4ee5\u7372\u53d6\u66f4\u591a\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li>\u57f7\u884c\u5fc5\u8981\u7684SQL\u67e5\u8a62\u4f86\u4fee\u5fa9\u554f\u984c\u3002<\/li>\n<\/ul>\n<p>\u5728\u9032\u884c\u9060\u7a0b\u8655\u7406\u6642\uff0c\u78ba\u4fdd\u60a8\u64c1\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u57f7\u884c\u6240\u9700\u7684\u64cd\u4f5c\uff0c\u4e26\u4e14\u5728\u9032\u884c\u4efb\u4f55\u66f4\u6539\u4e4b\u524d\uff0c\u6700\u597d\u5148\u5099\u4efd\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WLfPNfrcYx\">\u7e3d\u7d50<\/h2>\n<p>ORA-38420\u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u8868\u9054\u5f0f\u3001\u6e2c\u8a66\u5b50\u8868\u9054\u5f0f\u4ee5\u53ca\u78ba\u4fdd\u6578\u64da\u985e\u578b\u7684\u517c\u5bb9\u6027\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5982\u679c\u9700\u8981\u9032\u884c\u9060\u7a0b\u8655\u7406\uff0c\u8acb\u78ba\u4fdd\u64c1\u6709\u9069\u7576\u7684\u6b0a\u9650\u548c\u5099\u4efd\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-38420 \u932f\u8aa4\uff0c\u4e86\u89e3\u5b58\u5132\u7684\u5c6c\u6027\u5b50\u8868\u9054\u5f0f\u7121\u6548\u7684\u539f\u56e0\u53ca\u9060\u7a0b\u8655\u7406\u65b9\u6cd5\uff0c\u5feb\u901f\u4fee\u5fa9 Oracle \u6545\u969c\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-91996","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91996","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=91996"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91996\/revisions"}],"predecessor-version":[{"id":91997,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91996\/revisions\/91997"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=91996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=91996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=91996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}