{"id":91502,"date":"2024-10-18T21:45:18","date_gmt":"2024-10-18T13:45:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/91502\/"},"modified":"2024-10-18T21:45:18","modified_gmt":"2024-10-18T13:45:18","slug":"ora-31012-%e7%b5%a6%e5%ae%9a%e7%9a%84-xpath-%e8%a1%a8%e9%81%94%e5%bc%8f%e4%b8%8d%e5%8f%97%e6%94%af%e6%8c%81-oracle-%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","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/91502\/","title":{"rendered":"ORA-31012: \u7d66\u5b9a\u7684 XPATH \u8868\u9054\u5f0f\u4e0d\u53d7\u652f\u6301 ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-31012-%e7%b5%a6%e5%ae%9a%e7%9a%84-xpath-%e8%a1%a8%e9%81%94%e5%bc%8f%e4%b8%8d%e5%8f%97%e6%94%af%e6%8c%81-oracle-%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-HCHFUPNlmd\">ORA-31012: \u7d66\u5b9a\u7684 XPATH \u8868\u9054\u5f0f\u4e0d\u53d7\u652f\u6301 ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f <strong>ORA-31012<\/strong> \u932f\u8aa4\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207 XML \u6578\u64da\u8655\u7406\u6709\u95dc\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 XPATH \u8868\u9054\u5f0f\u6642\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\u3002<\/p>\n<h2 id=\"ora-31012-%e9%8c%af%e8%aa%a4%e7%9a%84%e5%8e%9f%e5%9b%a0-HCHFUPNlmd\">ORA-31012 \u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>ORA-31012 \u932f\u8aa4\u7684\u5b8c\u6574\u4fe1\u606f\u70ba\uff1a\u201c\u7d66\u5b9a\u7684 XPATH \u8868\u9054\u5f0f\u4e0d\u53d7\u652f\u6301\u201d\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684 XPATH \u8a9e\u6cd5\u3002<\/li>\n<li>\u5617\u8a66\u5728\u4e0d\u652f\u6301\u7684 XML \u7d50\u69cb\u4e0a\u57f7\u884c\u67e5\u8a62\u3002<\/li>\n<li>Oracle \u6578\u64da\u5eab\u7248\u672c\u4e0d\u652f\u6301\u67d0\u4e9b XPATH \u529f\u80fd\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u7576\u4f60\u5617\u8a66\u4f7f\u7528\u4e00\u500b\u8907\u96dc\u7684 XPATH \u8868\u9054\u5f0f\u4f86\u67e5\u8a62\u4e00\u500b XML \u6587\u6a94\u6642\uff0c\u5982\u679c\u8a72\u8868\u9054\u5f0f\u5305\u542b\u4e86 Oracle \u4e0d\u652f\u6301\u7684\u529f\u80fd\uff0c\u5c31\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e5%95%8f%e9%a1%8c-HCHFUPNlmd\">\u5982\u4f55\u8b58\u5225\u554f\u984c<\/h2>\n<p>\u8981\u6709\u6548\u5730\u8b58\u5225\u554f\u984c\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u5f15\u767c\u932f\u8aa4\u7684 SQL \u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u53ef\u80fd\u5f15\u767c ORA-31012 \u932f\u8aa4\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT EXTRACTVALUE(xml_column, '\/root\/element') FROM xml_table;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c `xml_column` \u4e2d\u7684 XML \u7d50\u69cb\u4e0d\u7b26\u5408 XPATH \u8868\u9054\u5f0f\u7684\u8981\u6c42\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa4\u3002\u6aa2\u67e5 XML \u7d50\u69cb\u548c XPATH \u8868\u9054\u5f0f\u7684\u517c\u5bb9\u6027\u662f\u89e3\u6c7a\u554f\u984c\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-HCHFUPNlmd\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4fee\u5fa9 ORA-31012 \u932f\u8aa4\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5-xpath-%e8%aa%9e%e6%b3%95-HCHFUPNlmd\">1. \u6aa2\u67e5 XPATH \u8a9e\u6cd5<\/h3>\n<p>\u78ba\u4fdd\u4f60\u7684 XPATH \u8868\u9054\u5f0f\u7b26\u5408\u6a19\u6e96\u8a9e\u6cd5\u3002\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u5728\u7dda\u5de5\u5177\u4f86\u9a57\u8b49\u4f60\u7684 XPATH \u8868\u9054\u5f0f\u662f\u5426\u6b63\u78ba\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d-xml-%e7%b5%90%e6%a7%8b-HCHFUPNlmd\">2. \u78ba\u8a8d XML \u7d50\u69cb<\/h3>\n<p>\u6aa2\u67e5 XML \u6587\u6a94\u7684\u7d50\u69cb\uff0c\u78ba\u4fdd\u5b83\u8207\u4f60\u7684 XPATH \u8868\u9054\u5f0f\u76f8\u5339\u914d\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u67e5\u770b XML \u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>SELECT xml_column.getClobVal() FROM xml_table;<\/code><\/pre>\n<h3 id=\"3-%e6%9b%b4%e6%96%b0-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%89%88%e6%9c%ac-HCHFUPNlmd\">3. \u66f4\u65b0 Oracle \u6578\u64da\u5eab\u7248\u672c<\/h3>\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u7684 Oracle \u7248\u672c\u8f03\u820a\uff0c\u53ef\u80fd\u4e0d\u652f\u6301\u67d0\u4e9b XPATH \u529f\u80fd\u3002\u8003\u616e\u5347\u7d1a\u5230\u6700\u65b0\u7248\u672c\u4ee5\u7372\u5f97\u66f4\u597d\u7684\u652f\u6301\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e6%9b%bf%e4%bb%a3%e6%96%b9%e6%b3%95-HCHFUPNlmd\">4. \u4f7f\u7528\u66ff\u4ee3\u65b9\u6cd5<\/h3>\n<p>\u5982\u679c XPATH \u8868\u9054\u5f0f\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u4f86\u67e5\u8a62 XML \u6578\u64da\uff0c\u4f8b\u5982\u4f7f\u7528 `XMLTABLE` \u51fd\u6578\uff1a<\/p>\n<pre><code>SELECT * FROM XMLTABLE('\/root\/element' PASSING xml_column COLUMNS column_name VARCHAR2(100) PATH '.') AS x;<\/code><\/pre>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e7%9a%84%e8%80%83%e9%87%8f-HCHFUPNlmd\">\u9060\u7a0b\u8655\u7406\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u9032\u884c\u6545\u969c\u6392\u9664\u6642\uff0c\u7279\u5225\u662f\u5728\u9060\u7a0b\u8655\u7406\u7684\u60c5\u6cc1\u4e0b\uff0c\u78ba\u4fdd\u4f60\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u8a2a\u554f\u548c\u4fee\u6539 XML \u6578\u64da\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u6216 SSH \u9023\u63a5\u6642\uff0c\u8acb\u78ba\u4fdd\u7db2\u7d61\u9023\u63a5\u7a69\u5b9a\uff0c\u4ee5\u907f\u514d\u4e2d\u65b7\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-HCHFUPNlmd\">\u7e3d\u7d50<\/h2>\n<p>ORA-31012 \u932f\u8aa4\u901a\u5e38\u8207\u4e0d\u6b63\u78ba\u7684 XPATH \u8868\u9054\u5f0f\u6216\u4e0d\u652f\u6301\u7684 XML \u7d50\u69cb\u6709\u95dc\u3002\u901a\u904e\u6aa2\u67e5\u8a9e\u6cd5\u3001\u78ba\u8a8d XML \u7d50\u69cb\u3001\u66f4\u65b0\u6578\u64da\u5eab\u7248\u672c\u4ee5\u53ca\u8003\u616e\u66ff\u4ee3\u67e5\u8a62\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\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> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-31012 \u932f\u8aa4\uff0c\u4e86\u89e3\u4e0d\u652f\u6301\u7684 XPATH \u8868\u9054\u5f0f\u539f\u56e0\u53ca\u9060\u7a0b\u8655\u7406\u6545\u969c\u4fee\u5fa9\u65b9\u6cd5\uff0c\u63d0\u5347 Oracle \u6578\u64da\u5eab\u6027\u80fd\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-91502","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91502","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=91502"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91502\/revisions"}],"predecessor-version":[{"id":91503,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91502\/revisions\/91503"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=91502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=91502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=91502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}