{"id":141943,"date":"2024-10-31T22:12:20","date_gmt":"2024-10-31T14:12:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/141943\/"},"modified":"2024-10-31T22:12:21","modified_gmt":"2024-10-31T14:12:21","slug":"sql-update-%e8%aa%9e%e5%8f%a5%e4%bd%bf%e7%94%a8%e8%a1%a8%e5%88%a5%e5%90%8d%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/141943\/","title":{"rendered":"SQL UPDATE \u8a9e\u53e5\u4f7f\u7528\u8868\u5225\u540d\u7684\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"sql-update-%e8%aa%9e%e5%8f%a5%e4%bd%bf%e7%94%a8%e8%a1%a8%e5%88%a5%e5%90%8d%e7%9a%84%e6%96%b9%e6%b3%95-owwfRuNSwY\">SQL UPDATE \u8a9e\u53e5\u4f7f\u7528\u8868\u5225\u540d\u7684\u65b9\u6cd5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u975e\u5e38\u91cd\u8981\u7684\u5de5\u5177\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u8cc7\u6599\u66f4\u65b0\u6642\u3002SQL UPDATE \u8a9e\u53e5\u7528\u65bc\u4fee\u6539\u8cc7\u6599\u8868\u4e2d\u7684\u73fe\u6709\u8a18\u9304\uff0c\u800c\u4f7f\u7528\u8868\u5225\u540d\u5247\u53ef\u4ee5\u4f7f\u67e5\u8a62\u66f4\u52a0\u7c21\u6f54\u548c\u6613\u65bc\u7406\u89e3\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 SQL UPDATE \u8a9e\u53e5\u4e2d\u4f7f\u7528\u8868\u5225\u540d\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a1%a8%e5%88%a5%e5%90%8d%ef%bc%9f-owwfRuNSwY\">\u4ec0\u9ebc\u662f\u8868\u5225\u540d\uff1f<\/h2>\n<p>\u8868\u5225\u540d\u662f SQL \u4e2d\u7684\u4e00\u7a2e\u7c21\u5316\u5beb\u6cd5\uff0c\u5141\u8a31\u7528\u6236\u70ba\u8cc7\u6599\u8868\u6307\u5b9a\u4e00\u500b\u7c21\u77ed\u7684\u540d\u7a31\u3002\u9019\u5728\u8655\u7406\u591a\u500b\u8cc7\u6599\u8868\u6642\u7279\u5225\u6709\u7528\uff0c\u56e0\u70ba\u5b83\u53ef\u4ee5\u6e1b\u5c11\u4ee3\u78bc\u7684\u5197\u9577\u6027\uff0c\u4e26\u63d0\u9ad8\u53ef\u8b80\u6027\u3002\u8868\u5225\u540d\u901a\u5e38\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528 AS \u95dc\u9375\u5b57\u4f86\u5b9a\u7fa9\uff0c\u4f46 AS \u662f\u53ef\u9078\u7684\u3002<\/p>\n<h2 id=\"sql-update-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-owwfRuNSwY\">SQL UPDATE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728\u4f7f\u7528 SQL UPDATE \u8a9e\u53e5\u6642\uff0c\u57fa\u672c\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE table_name\nSET column1 = value1, column2 = value2, ...\nWHERE condition;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0ctable_name \u662f\u8981\u66f4\u65b0\u7684\u8cc7\u6599\u8868\u540d\u7a31\uff0ccolumn1 \u548c column2 \u662f\u8981\u4fee\u6539\u7684\u6b04\u4f4d\uff0cvalue1 \u548c value2 \u662f\u65b0\u7684\u503c\uff0c\u800c condition \u5247\u662f\u7528\u4f86\u6307\u5b9a\u54ea\u4e9b\u8a18\u9304\u9700\u8981\u88ab\u66f4\u65b0\u7684\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%a1%a8%e5%88%a5%e5%90%8d%e7%9a%84-sql-update-%e8%aa%9e%e5%8f%a5-owwfRuNSwY\">\u4f7f\u7528\u8868\u5225\u540d\u7684 SQL UPDATE \u8a9e\u53e5<\/h2>\n<p>\u7576\u9700\u8981\u66f4\u65b0\u7684\u8cc7\u6599\u8868\u8f03\u591a\u6642\uff0c\u4f7f\u7528\u8868\u5225\u540d\u53ef\u4ee5\u4f7f SQL \u8a9e\u53e5\u66f4\u52a0\u6e05\u6670\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u8868\u5225\u540d\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>UPDATE employees AS e\nSET e.salary = e.salary * 1.1\nWHERE e.department_id = 3;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5c07 employees \u8cc7\u6599\u8868\u7684\u5225\u540d\u8a2d\u70ba e\uff0c\u7136\u5f8c\u66f4\u65b0\u6240\u6709\u90e8\u9580 ID \u70ba 3 \u7684\u54e1\u5de5\u85aa\u6c34\uff0c\u5c07\u5176\u63d0\u9ad8 10%\u3002\u9019\u6a23\u7684\u5beb\u6cd5\u4e0d\u50c5\u7c21\u5316\u4e86\u8a9e\u53e5\uff0c\u9084\u63d0\u9ad8\u4e86\u53ef\u8b80\u6027\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e8%a1%a8%e6%9b%b4%e6%96%b0%e7%9a%84%e6%83%85%e6%b3%81-owwfRuNSwY\">\u591a\u8868\u66f4\u65b0\u7684\u60c5\u6cc1<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u53e6\u4e00\u500b\u8cc7\u6599\u8868\u7684\u8cc7\u6599\u4f86\u66f4\u65b0\u67d0\u500b\u8cc7\u6599\u8868\u3002\u9019\u6642\u5019\uff0c\u4f7f\u7528\u8868\u5225\u540d\u53ef\u4ee5\u4f7f\u67e5\u8a62\u66f4\u52a0\u6e05\u6670\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>UPDATE orders AS o\nSET o.status = 'shipped'\nFROM customers AS c\nWHERE o.customer_id = c.id AND c.region = 'Asia';<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u66f4\u65b0 orders \u8cc7\u6599\u8868\u4e2d\u7684\u72c0\u614b\uff0c\u5c07\u6240\u6709\u4f86\u81ea\u4e9e\u6d32\u5730\u5340\u7684\u5ba2\u6236\u7684\u8a02\u55ae\u72c0\u614b\u8a2d\u70ba &#8216;shipped&#8217;\u3002\u4f7f\u7528\u8868\u5225\u540d\u4f7f\u5f97\u67e5\u8a62\u7684\u7d50\u69cb\u66f4\u52a0\u660e\u78ba\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-owwfRuNSwY\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u7c21\u77ed\u4e14\u5177\u63cf\u8ff0\u6027\u7684\u5225\u540d\uff1a<\/strong>\u9078\u64c7\u80fd\u5920\u6e05\u695a\u8868\u9054\u8cc7\u6599\u8868\u5167\u5bb9\u7684\u5225\u540d\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\u3002<\/li>\n<li><strong>\u907f\u514d\u904e\u5ea6\u4f7f\u7528\u5225\u540d\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u904e\u591a\u7684\u5225\u540d\u53ef\u80fd\u6703\u4f7f\u67e5\u8a62\u8b8a\u5f97\u6df7\u4e82\uff0c\u61c9\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u5408\u7406\u4f7f\u7528\u3002<\/li>\n<li><strong>\u4fdd\u6301\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u6574\u500b\u67e5\u8a62\u4e2d\u4fdd\u6301\u5225\u540d\u7684\u4e00\u81f4\u6027\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6df7\u6dc6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-owwfRuNSwY\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL UPDATE \u8a9e\u53e5\u4e2d\u4f7f\u7528\u8868\u5225\u540d\u662f\u4e00\u7a2e\u63d0\u9ad8\u67e5\u8a62\u53ef\u8b80\u6027\u548c\u7c21\u6f54\u6027\u7684\u6709\u6548\u65b9\u6cd5\u3002\u900f\u904e\u5408\u7406\u7684\u4f7f\u7528\u8868\u5225\u540d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u7ba1\u7406\u548c\u66f4\u65b0\u8cc7\u6599\u5eab\u4e2d\u7684\u8cc7\u6599\u3002\u7121\u8ad6\u662f\u5728\u55ae\u4e00\u8cc7\u6599\u8868\u9084\u662f\u591a\u8cc7\u6599\u8868\u7684\u60c5\u6cc1\u4e0b\uff0c\u8868\u5225\u540d\u90fd\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u66f4\u6e05\u6670\u5730\u8868\u9054\u610f\u5716\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728 SQL UPDATE \u8a9e\u53e5\u4e2d\u4f7f\u7528\u8868\u5225\u540d\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\u8207\u53ef\u8b80\u6027\uff0c\u7c21\u5316\u8cc7\u6599\u66f4\u65b0\u904e\u7a0b\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-141943","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/141943","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=141943"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/141943\/revisions"}],"predecessor-version":[{"id":141944,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/141943\/revisions\/141944"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=141943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=141943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=141943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}