{"id":95362,"date":"2024-10-20T00:25:17","date_gmt":"2024-10-19T16:25:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95362\/"},"modified":"2024-10-20T00:25:17","modified_gmt":"2024-10-19T16:25:17","slug":"oracle%e5%af%a6%e7%8f%be%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2%ef%bc%9a%e9%9a%a8%e5%bf%83%e6%89%80%e6%ac%b2%e6%8b%86%e8%a7%a3%e6%95%b8%e6%93%9a-oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95362\/","title":{"rendered":"Oracle\u5be6\u73fe\u5b57\u7b26\u4e32\u5206\u5272\uff1a\u96a8\u5fc3\u6240\u6b32\u62c6\u89e3\u6578\u64da (oracle\u6578\u64da\u5eab\u5206\u5272\u5b57\u7b26\u4e32)"},"content":{"rendered":"<h1 id=\"oracle%e5%af%a6%e7%8f%be%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2%ef%bc%9a%e9%9a%a8%e5%bf%83%e6%89%80%e6%ac%b2%e6%8b%86%e8%a7%a3%e6%95%b8%e6%93%9a-TQRvknfTnS\">Oracle\u5be6\u73fe\u5b57\u7b26\u4e32\u5206\u5272\uff1a\u96a8\u5fc3\u6240\u6b32\u62c6\u89e3\u6578\u64da<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u5b57\u7b26\u4e32\u7684\u8655\u7406\u662f\u4e00\u9805\u5e38\u898b\u7684\u4efb\u52d9\u3002\u5c24\u5176\u662f\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u5982\u4f55\u6709\u6548\u5730\u5206\u5272\u5b57\u7b26\u4e32\u4ee5\u63d0\u53d6\u6240\u9700\u7684\u4fe1\u606f\uff0c\u5c0d\u65bc\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u751f\u6210\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u4e2d\u5b57\u7b26\u4e32\u5206\u5272\u7684\u5e7e\u7a2e\u65b9\u6cd5\uff0c\u5e6b\u52a9\u7528\u6236\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\u3002<\/p>\n<h2 id=\"%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2%e7%9a%84%e9%9c%80%e6%b1%82-TQRvknfTnS\">\u5b57\u7b26\u4e32\u5206\u5272\u7684\u9700\u6c42<\/h2>\n<p>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u4ee5\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u5b58\u5132\uff0c\u4e26\u4e14\u9019\u4e9b\u5b57\u7b26\u4e32\u53ef\u80fd\u5305\u542b\u591a\u500b\u503c\u3002\u4f8b\u5982\uff0c\u67d0\u500b\u5b57\u6bb5\u53ef\u80fd\u5305\u542b\u7528\u9017\u865f\u5206\u9694\u7684\u591a\u500b\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3002\u70ba\u4e86\u9032\u884c\u9032\u4e00\u6b65\u7684\u5206\u6790\u6216\u8655\u7406\uff0c\u5c07\u9019\u4e9b\u5b57\u7b26\u4e32\u5206\u5272\u6210\u55ae\u7368\u7684\u503c\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8oracle%e7%9a%84%e5%85%a7%e5%bb%ba%e5%87%bd%e6%95%b8-TQRvknfTnS\">\u4f7f\u7528Oracle\u7684\u5167\u5efa\u51fd\u6578<\/h2>\n<p>Oracle\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5167\u5efa\u51fd\u6578\u4f86\u8655\u7406\u5b57\u7b26\u4e32\u5206\u5272\u3002\u6700\u5e38\u7528\u7684\u51fd\u6578\u662f <code>REGEXP_SUBSTR<\/code> \u548c <code>REGEXP_COUNT<\/code>\u3002\u9019\u4e9b\u51fd\u6578\u5229\u7528\u6b63\u5247\u8868\u9054\u5f0f\u4f86\u67e5\u627e\u548c\u63d0\u53d6\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u90e8\u5206\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8regexp_substr%e9%80%b2%e8%a1%8c%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2-TQRvknfTnS\">\u793a\u4f8b\uff1a\u4f7f\u7528REGEXP_SUBSTR\u9032\u884c\u5b57\u7b26\u4e32\u5206\u5272<\/h3>\n<pre><code>SELECT REGEXP_SUBSTR('apple,banana,cherry', '[^,]+', 1, LEVEL) AS fruit\nFROM dual\nCONNECT BY REGEXP_SUBSTR('apple,banana,cherry', '[^,]+', 1, LEVEL) IS NOT NULL;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>REGEXP_SUBSTR<\/code> \u51fd\u6578\u4f86\u63d0\u53d6\u7528\u9017\u865f\u5206\u9694\u7684\u6c34\u679c\u540d\u7a31\u3002\u9019\u6bb5\u4ee3\u78bc\u6703\u8fd4\u56de\u4e09\u884c\uff0c\u5206\u5225\u662f\u201capple\u201d\u3001\u201cbanana\u201d\u548c\u201ccherry\u201d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%87%aa%e5%ae%9a%e7%be%a9%e5%87%bd%e6%95%b8%e9%80%b2%e8%a1%8c%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2-TQRvknfTnS\">\u4f7f\u7528\u81ea\u5b9a\u7fa9\u51fd\u6578\u9032\u884c\u5b57\u7b26\u4e32\u5206\u5272<\/h2>\n<p>\u9664\u4e86\u5167\u5efa\u51fd\u6578\uff0c\u9084\u53ef\u4ee5\u5275\u5efa\u81ea\u5b9a\u7fa9\u7684PL\/SQL\u51fd\u6578\u4f86\u5be6\u73fe\u5b57\u7b26\u4e32\u5206\u5272\u3002\u9019\u7a2e\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u8655\u7406\u8907\u96dc\u7684\u5b57\u7b26\u4e32\u6642\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e8%87%aa%e5%ae%9a%e7%be%a9%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%88%86%e5%89%b2%e5%87%bd%e6%95%b8-TQRvknfTnS\">\u793a\u4f8b\uff1a\u81ea\u5b9a\u7fa9\u5b57\u7b26\u4e32\u5206\u5272\u51fd\u6578<\/h3>\n<pre><code>CREATE OR REPLACE FUNCTION split_string(p_string IN VARCHAR2, p_delimiter IN VARCHAR2)\nRETURN SYS.ODCIVARCHAR2LIST IS\n    l_string SYS.ODCIVARCHAR2LIST := SYS.ODCIVARCHAR2LIST();\n    l_pos    PLS_INTEGER;\nBEGIN\n    l_pos := INSTR(p_string, p_delimiter);\n    WHILE l_pos &gt; 0 LOOP\n        l_string.EXTEND;\n        l_string(l_string.COUNT) := SUBSTR(p_string, 1, l_pos - 1);\n        p_string := SUBSTR(p_string, l_pos + LENGTH(p_delimiter));\n        l_pos := INSTR(p_string, p_delimiter);\n    END LOOP;\n    l_string.EXTEND;\n    l_string(l_string.COUNT) := p_string;\n    RETURN l_string;\nEND split_string;\n<\/code><\/pre>\n<p>\u9019\u500b\u81ea\u5b9a\u7fa9\u51fd\u6578 <code>split_string<\/code> \u63a5\u53d7\u4e00\u500b\u5b57\u7b26\u4e32\u548c\u4e00\u500b\u5206\u9694\u7b26\uff0c\u4e26\u8fd4\u56de\u4e00\u500b\u5b57\u7b26\u4e32\u5217\u8868\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574\u5206\u9694\u7b26\uff0c\u5f9e\u800c\u9748\u6d3b\u5730\u8655\u7406\u4e0d\u540c\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-TQRvknfTnS\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u5b57\u7b26\u4e32\u5206\u5272\u7684\u6027\u80fd\u53ef\u80fd\u6210\u70ba\u4e00\u500b\u554f\u984c\u3002\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u901a\u5e38\u6bd4\u81ea\u5b9a\u7fa9\u51fd\u6578\u66f4\u9ad8\u6548\uff0c\u56e0\u70ba\u5b83\u5011\u662f\u7d93\u904e\u512a\u5316\u7684\u3002\u7136\u800c\uff0c\u6839\u64da\u5177\u9ad4\u9700\u6c42\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u4ecd\u7136\u662f\u95dc\u9375\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-TQRvknfTnS\">\u7d50\u8ad6<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u5b57\u7b26\u4e32\u5206\u5272\u662f\u4e00\u9805\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7ba1\u7406\u548c\u5206\u6790\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u5167\u5efa\u51fd\u6578\u9084\u662f\u81ea\u5b9a\u7fa9\u51fd\u6578\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u62c6\u89e3\u5b57\u7b26\u4e32\u5c07\u4f7f\u6578\u64da\u8655\u7406\u8b8a\u5f97\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u64f4\u5c55\u60a8\u7684\u696d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u4e2d\u5b57\u7b26\u4e32\u5206\u5272\u7684\u6280\u5de7\uff0c\u96a8\u5fc3\u6240\u6b32\u5730\u62c6\u89e3\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u8207\u9748\u6d3b\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-95362","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95362","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=95362"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95362\/revisions"}],"predecessor-version":[{"id":95363,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95362\/revisions\/95363"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}