{"id":183390,"date":"2024-11-10T04:25:23","date_gmt":"2024-11-09T20:25:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183390\/"},"modified":"2024-11-10T04:25:23","modified_gmt":"2024-11-09T20:25:23","slug":"%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e6%93%9a%e6%95%b4%e5%90%88%ef%bc%9a%e5%90%88%e4%bd%b5%e5%85%a9%e5%88%97%e6%95%b8%e6%93%9a%e7%82%ba%e4%b8%80%e5%88%97-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183390\/","title":{"rendered":"\u5be6\u73fe\u6578\u64da\u5eab\u6578\u64da\u6574\u5408\uff1a\u5408\u4f75\u5169\u5217\u6578\u64da\u70ba\u4e00\u5217 (\u6578\u64da\u5eab\u5169\u500b\u5217\u5408\u4f75\u4e00\u5217\u6578\u64da)"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e6%93%9a%e6%95%b4%e5%90%88%ef%bc%9a%e5%90%88%e4%bd%b5%e5%85%a9%e5%88%97%e6%95%b8%e6%93%9a%e7%82%ba%e4%b8%80%e5%88%97-axqtSDRrNg\">\u5be6\u73fe\u6578\u64da\u5eab\u6578\u64da\u6574\u5408\uff1a\u5408\u4f75\u5169\u5217\u6578\u64da\u70ba\u4e00\u5217<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u6574\u5408\u662f\u4e00\u500b\u91cd\u8981\u7684\u904e\u7a0b\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5c07\u591a\u500b\u6578\u64da\u4f86\u6e90\u5408\u4f75\u70ba\u4e00\u500b\u7d71\u4e00\u7684\u683c\u5f0f\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5408\u4f75\u5169\u5217\u6578\u64da\u70ba\u4e00\u5217\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%90%88%e4%bd%b5%e6%95%b8%e6%93%9a%e5%88%97%ef%bc%9f-axqtSDRrNg\">\u70ba\u4ec0\u9ebc\u9700\u8981\u5408\u4f75\u6578\u64da\u5217\uff1f<\/h2>\n<p>\u5408\u4f75\u6578\u64da\u5217\u7684\u9700\u6c42\u901a\u5e38\u51fa\u73fe\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u6e05\u7406\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u91cd\u8907\u6216\u5197\u9918\u7684\u6578\u64da\u5217\uff0c\u5408\u4f75\u9019\u4e9b\u5217\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u7d50\u69cb\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u5c07\u76f8\u95dc\u7684\u6578\u64da\u5408\u4f75\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u4e26\u4f7f\u5206\u6790\u7d50\u679c\u66f4\u5177\u53ef\u8b80\u6027\u3002<\/li>\n<li><strong>\u5831\u544a\u751f\u6210\uff1a<\/strong>\u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u5408\u4f75\u6578\u64da\u5217\u53ef\u4ee5\u4f7f\u5831\u544a\u66f4\u52a0\u7c21\u6f54\u660e\u4e86\uff0c\u4fbf\u65bc\u7406\u89e3\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%90%88%e4%bd%b5%e6%95%b8%e6%93%9a%e5%88%97%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%96%b9%e6%b3%95-axqtSDRrNg\">\u5408\u4f75\u6578\u64da\u5217\u7684\u57fa\u672c\u65b9\u6cd5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u5408\u4f75\u5169\u5217\u6578\u64da\u70ba\u4e00\u5217\u901a\u5e38\u4f7f\u7528\u5b57\u7b26\u4e32\u9023\u63a5\u7684\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684 SQL \u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u5408\u4f75\u5217\u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-mysql-axqtSDRrNg\">1. MySQL<\/h3>\n<pre><code>SELECT CONCAT(column1, ' ', column2) AS merged_column\nFROM your_table;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>CONCAT<\/code> \u51fd\u6578\u5c07 <code>column1<\/code> \u548c <code>column2<\/code> \u7684\u6578\u64da\u5408\u4f75\u70ba\u4e00\u500b\u65b0\u7684\u5217\uff0c\u4e26\u7528\u7a7a\u683c\u5206\u9694\u3002<\/p>\n<h3 id=\"2-postgresql-axqtSDRrNg\">2. PostgreSQL<\/h3>\n<pre><code>SELECT column1 || ' ' || column2 AS merged_column\nFROM your_table;<\/code><\/pre>\n<p>PostgreSQL \u4f7f\u7528 <code>||<\/code> \u64cd\u4f5c\u7b26\u4f86\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u9019\u6a23\u53ef\u4ee5\u9054\u5230\u76f8\u540c\u7684\u6548\u679c\u3002<\/p>\n<h3 id=\"3-sql-server-axqtSDRrNg\">3. SQL Server<\/h3>\n<pre><code>SELECT column1 + ' ' + column2 AS merged_column\nFROM your_table;<\/code><\/pre>\n<p>\u5728 SQL Server \u4e2d\uff0c\u4f7f\u7528 <code>+<\/code> \u64cd\u4f5c\u7b26\u4f86\u5408\u4f75\u5b57\u7b26\u4e32\u3002<\/p>\n<h2 id=\"%e8%80%83%e6%85%ae%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-axqtSDRrNg\">\u8003\u616e\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728\u5408\u4f75\u6578\u64da\u5217\u6642\uff0c\u5fc5\u9808\u6ce8\u610f\u6578\u64da\u985e\u578b\u7684\u517c\u5bb9\u6027\u3002\u5982\u679c\u8981\u5408\u4f75\u7684\u5217\u4e2d\u5305\u542b\u975e\u5b57\u7b26\u4e32\u985e\u578b\u7684\u6578\u64da\uff0c\u5247\u9700\u8981\u9032\u884c\u985e\u578b\u8f49\u63db\u3002\u4f8b\u5982\uff0c\u5728 MySQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>CAST<\/code> \u6216 <code>CONVERT<\/code> \u51fd\u6578\u4f86\u5c07\u6578\u64da\u8f49\u63db\u70ba\u5b57\u7b26\u4e32\u985e\u578b\uff1a<\/p>\n<pre><code>SELECT CONCAT(CAST(column1 AS CHAR), ' ', CAST(column2 AS CHAR)) AS merged_column\nFROM your_table;<\/code><\/pre>\n<h2 id=\"%e5%90%88%e4%bd%b5%e5%be%8c%e7%9a%84%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86-axqtSDRrNg\">\u5408\u4f75\u5f8c\u7684\u6578\u64da\u8655\u7406<\/h2>\n<p>\u5408\u4f75\u6578\u64da\u5217\u5f8c\uff0c\u53ef\u80fd\u9700\u8981\u9032\u4e00\u6b65\u8655\u7406\u9019\u4e9b\u6578\u64da\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c07\u5408\u4f75\u5f8c\u7684\u6578\u64da\u5b58\u5132\u5230\u65b0\u7684\u8868\u4e2d\uff0c\u6216\u66f4\u65b0\u539f\u6709\u7684\u8868\u3002\u4ee5\u4e0b\u662f\u5c07\u5408\u4f75\u7d50\u679c\u63d2\u5165\u65b0\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO new_table (merged_column)\nSELECT CONCAT(column1, ' ', column2)\nFROM your_table;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-axqtSDRrNg\">\u7e3d\u7d50<\/h2>\n<p>\u5408\u4f75\u6578\u64da\u5217\u662f\u4e00\u500b\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u5e38\u898b\u4e14\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528 SQL \u4e2d\u7684\u5b57\u7b26\u4e32\u9023\u63a5\u51fd\u6578\u6216\u64cd\u4f5c\u7b26\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u5169\u5217\u6578\u64da\u5408\u4f75\u70ba\u4e00\u5217\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u5206\u6790\u6548\u7387\u3002\u7121\u8ad6\u662f\u5728\u6578\u64da\u6e05\u7406\u3001\u6578\u64da\u5206\u6790\u9084\u662f\u5831\u544a\u751f\u6210\u4e2d\uff0c\u9019\u4e00\u6280\u8853\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\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\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u6574\u5408\u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u60a8\u7684\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5408\u4f75\u5169\u5217\u6578\u64da\u70ba\u4e00\u5217\uff0c\u5be6\u73fe\u6578\u64da\u6574\u5408\uff0c\u63d0\u9ad8\u6578\u64da\u7ba1\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-183390","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183390","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=183390"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183390\/revisions"}],"predecessor-version":[{"id":183391,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183390\/revisions\/183391"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}