{"id":94572,"date":"2024-10-19T19:22:17","date_gmt":"2024-10-19T11:22:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94572\/"},"modified":"2024-10-19T19:22:18","modified_gmt":"2024-10-19T11:22:18","slug":"oracle-wm_concatcolumn%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94572\/","title":{"rendered":"Oracle wm_concat(column)\u51fd\u6578\u7684\u4f7f\u7528"},"content":{"rendered":"<h1 id=\"oracle-wm_concatcolumn%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8-CnmpRVakqZ\">Oracle wm_concat(column)\u51fd\u6578\u7684\u4f7f\u7528<\/h1>\n<p>\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\uff0cwm_concat(column)\u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u805a\u5408\u51fd\u6578\uff0c\u4e3b\u8981\u7528\u65bc\u5c07\u591a\u884c\u8cc7\u6599\u5408\u4f75\u6210\u4e00\u884c\uff0c\u4e26\u4ee5\u7279\u5b9a\u7684\u5206\u9694\u7b26\u9023\u63a5\u3002\u9019\u5728\u8655\u7406\u9700\u8981\u5c07\u591a\u500b\u503c\u5408\u4f75\u70ba\u4e00\u500b\u5b57\u7b26\u4e32\u7684\u60c5\u6cc1\u4e0b\u7279\u5225\u6709\u7528\uff0c\u4f8b\u5982\u5728\u5831\u544a\u751f\u6210\u6216\u6578\u64da\u5206\u6790\u4e2d\u3002<\/p>\n<h2 id=\"wm_concat%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-CnmpRVakqZ\">wm_concat\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>wm_concat\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT wm_concat(column_name) FROM table_name;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>column_name<\/code>\u662f\u4f60\u60f3\u8981\u5408\u4f75\u7684\u5217\u540d\uff0c\u800c<code>table_name<\/code>\u662f\u5305\u542b\u8a72\u5217\u7684\u8868\u540d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-CnmpRVakqZ\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u8a72\u8868\u5305\u542b\u4ee5\u4e0b\u6578\u64da\uff1a<\/p>\n<pre><code>+----+----------+\n| ID |  Name    |\n+----+----------+\n|  1 | Alice    |\n|  2 | Bob      |\n|  3 | Charlie   |\n|  4 | David    |\n+----+----------+<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u5c07\u6240\u6709\u54e1\u5de5\u7684\u540d\u5b57\u5408\u4f75\u6210\u4e00\u500b\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT wm_concat(Name) AS All_Employees FROM employees;<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u7d50\u679c\u5c07\u6703\u662f\uff1a<\/p>\n<pre><code>All_Employees\n---------------\nAlice,Bob,Charlie,David<\/code><\/pre>\n<h2 id=\"%e8%87%aa%e5%ae%9a%e7%be%a9%e5%88%86%e9%9a%94%e7%ac%a6-CnmpRVakqZ\">\u81ea\u5b9a\u7fa9\u5206\u9694\u7b26<\/h2>\n<p>wm_concat\u51fd\u6578\u7684\u53e6\u4e00\u500b\u512a\u9ede\u662f\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u5206\u9694\u7b26\u3002\u96d6\u7136\u9ed8\u8a8d\u7684\u5206\u9694\u7b26\u662f\u9017\u865f\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u4f7f\u7528<code>REPLACE<\/code>\u51fd\u6578\u4f86\u66f4\u6539\u5b83\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u5e0c\u671b\u4f7f\u7528\u5206\u865f\u4f5c\u70ba\u5206\u9694\u7b26\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>SELECT REPLACE(wm_concat(Name), ',', ';') AS All_Employees FROM employees;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u7d50\u679c\u5c07\u6703\u662f\uff1a<\/p>\n<pre><code>All_Employees\n---------------\nAlice;Bob;Charlie;David<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-CnmpRVakqZ\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5118\u7ba1wm_concat\u51fd\u6578\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u554f\u984c\uff1a<\/strong>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0cwm_concat\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u6642\u61c9\u8b39\u614e\u8003\u616e\u3002<\/li>\n<li><strong>\u517c\u5bb9\u6027\uff1a<\/strong>wm_concat\u662fOracle\u7279\u6709\u7684\u51fd\u6578\uff0c\u5176\u4ed6\u8cc7\u6599\u5eab\u7cfb\u7d71\u53ef\u80fd\u4e0d\u652f\u6301\u6b64\u51fd\u6578\uff0c\u56e0\u6b64\u5728\u8de8\u5e73\u53f0\u958b\u767c\u6642\u9700\u8003\u616e\u66ff\u4ee3\u65b9\u6848\u3002<\/li>\n<li><strong>\u6578\u64da\u9577\u5ea6\u9650\u5236\uff1a<\/strong>\u5408\u4f75\u7684\u5b57\u7b26\u4e32\u9577\u5ea6\u53ef\u80fd\u6703\u53d7\u5230\u9650\u5236\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bcOracle\u7684\u7248\u672c\u548c\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-CnmpRVakqZ\">\u7d50\u8ad6<\/h2>\n<p>wm_concat\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\u8f15\u9b06\u5730\u5408\u4f75\u591a\u884c\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728\u5831\u544a\u751f\u6210\u9084\u662f\u6578\u64da\u5206\u6790\u4e2d\uff0c\u9019\u500b\u51fd\u6578\u90fd\u80fd\u63d0\u4f9b\u6975\u5927\u7684\u4fbf\u5229\u3002\u4e86\u89e3\u5176\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u5c07\u6709\u52a9\u65bc\u66f4\u6709\u6548\u5730\u5229\u7528Oracle\u8cc7\u6599\u5eab\u7684\u529f\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u6280\u8853\u9700\u6c42\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle wm_concat(column)\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u8f15\u9b06\u5c07\u591a\u884c\u6578\u64da\u5408\u4f75\u70ba\u55ae\u884c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-94572","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94572","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=94572"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94572\/revisions"}],"predecessor-version":[{"id":94573,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94572\/revisions\/94573"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94572"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94572"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94572"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}