{"id":74929,"date":"2024-10-15T23:04:14","date_gmt":"2024-10-15T15:04:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/74929\/"},"modified":"2024-10-15T23:04:15","modified_gmt":"2024-10-15T15:04:15","slug":"mysql-update%e8%aa%9e%e5%8f%a5%e7%9a%84%e6%ad%a3%e7%a2%ba%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/74929\/","title":{"rendered":"MySQL UPDATE\u8a9e\u53e5\u7684\u6b63\u78ba\u7528\u6cd5"},"content":{"rendered":"<h1 id=\"mysql-update%e8%aa%9e%e5%8f%a5%e7%9a%84%e6%ad%a3%e7%a2%ba%e7%94%a8%e6%b3%95-QQBFZWKeJa\">MySQL UPDATE\u8a9e\u53e5\u7684\u6b63\u78ba\u7528\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5176\u5f37\u5927\u7684\u67e5\u8a62\u8a9e\u8a00SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f7f\u5f97\u6578\u64da\u7684\u64cd\u4f5c\u8b8a\u5f97\u7c21\u55ae\u800c\u9ad8\u6548\u3002\u5176\u4e2d\uff0c<code>UPDATE<\/code>\u8a9e\u53e5\u662f\u7528\u4f86\u4fee\u6539\u6578\u64da\u8868\u4e2d\u73fe\u6709\u8a18\u9304\u7684\u91cd\u8981\u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>UPDATE<\/code>\u8a9e\u53e5\u7684\u6b63\u78ba\u7528\u6cd5\uff0c\u5305\u62ec\u5176\u8a9e\u6cd5\u3001\u5e38\u898b\u932f\u8aa4\u53ca\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"update%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-QQBFZWKeJa\">UPDATE\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p><code>UPDATE<\/code>\u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u52171 = \u503c1, \u52172 = \u503c2, ...\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>\u8868\u540d<\/code>\u662f\u8981\u66f4\u65b0\u7684\u6578\u64da\u8868\uff0c<code>\u52171, \u52172<\/code>\u662f\u9700\u8981\u4fee\u6539\u7684\u5217\uff0c\u800c<code>\u503c1, \u503c2<\/code>\u5247\u662f\u65b0\u7684\u6578\u64da\u503c\u3002<code>WHERE<\/code>\u5b50\u53e5\u7528\u65bc\u6307\u5b9a\u54ea\u4e9b\u8a18\u9304\u9700\u8981\u88ab\u66f4\u65b0\uff0c\u9019\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u56e0\u70ba\u5982\u679c\u7701\u7565\u4e86<code>WHERE<\/code>\u5b50\u53e5\uff0c\u5c07\u6703\u66f4\u65b0\u6574\u500b\u8868\u7684\u6240\u6709\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%af%84%e4%be%8b-QQBFZWKeJa\">\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>+----+-------+--------+\n| ID | Name  | Salary |\n+----+-------+--------+\n| 1  | John  | 5000   |\n| 2  | Alice | 6000   |\n| 3  | Bob   | 5500   |\n+----+-------+--------+<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u5c07Alice\u7684\u85aa\u6c34\u66f4\u65b0\u70ba7000\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE employees\nSET Salary = 7000\nWHERE Name = 'Alice';<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0c<code>employees<\/code>\u8868\u5c07\u8b8a\u70ba\uff1a<\/p>\n<pre><code>+----+-------+--------+\n| ID | Name  | Salary |\n+----+-------+--------+\n| 1  | John  | 5000   |\n| 2  | Alice | 7000   |\n| 3  | Bob   | 5500   |\n+----+-------+--------+<\/code><\/pre>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e9%8c%af%e8%aa%a4-QQBFZWKeJa\">\u5e38\u898b\u932f\u8aa4<\/h2>\n<p>\u5728\u4f7f\u7528<code>UPDATE<\/code>\u8a9e\u53e5\u6642\uff0c\u958b\u767c\u8005\u5e38\u5e38\u6703\u72af\u4e00\u4e9b\u932f\u8aa4\uff0c\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u7684\u932f\u8aa4\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<ul>\n<li><strong>\u5fd8\u8a18WHERE\u5b50\u53e5\uff1a<\/strong>\u5982\u679c\u4e0d\u52a0<code>WHERE<\/code>\u5b50\u53e5\uff0c\u6240\u6709\u8a18\u9304\u90fd\u6703\u88ab\u66f4\u65b0\u3002\u9019\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u6216\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u932f\u8aa4\u7684\u5217\u540d\uff1a<\/strong>\u78ba\u4fdd\u5217\u540d\u6b63\u78ba\uff0c\u5426\u5247\u6703\u5c0e\u81f4\u8a9e\u6cd5\u932f\u8aa4\u6216\u66f4\u65b0\u5931\u6557\u3002<\/li>\n<li><strong>\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u5728\u66f4\u65b0\u6642\uff0c\u78ba\u4fdd\u65b0\u503c\u7684\u6578\u64da\u985e\u578b\u8207\u5217\u7684\u6578\u64da\u985e\u578b\u76f8\u7b26\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-QQBFZWKeJa\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fdd<code>UPDATE<\/code>\u8a9e\u53e5\u7684\u5b89\u5168\u6027\u548c\u6709\u6548\u6027\uff0c\u5efa\u8b70\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u4efb\u4f55\u66f4\u65b0\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u9032\u884c\u591a\u500b\u66f4\u65b0\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u66f4\u65b0\u8a9e\u53e5\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u4e4b\u524d\uff0c\u5148\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9a57\u8b49\u66f4\u65b0\u8a9e\u53e5\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QQBFZWKeJa\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684<code>UPDATE<\/code>\u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u4fee\u6539\u6578\u64da\u8868\u4e2d\u7684\u8a18\u9304\u3002\u901a\u904e\u6b63\u78ba\u7684\u8a9e\u6cd5\u3001\u907f\u514d\u5e38\u898b\u932f\u8aa4\u4ee5\u53ca\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u548c\u5b8c\u6574\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u6216<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u89e3\u6c7a\u65b9\u6848\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u4f9b\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u652f\u6301\uff0c\u9032\u4e00\u6b65\u63d0\u5347\u696d\u52d9\u904b\u71df\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL UPDATE\u8a9e\u53e5\u7684\u6b63\u78ba\u7528\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u66f4\u65b0\u6578\u64da\u5eab\u4e2d\u7684\u8a18\u9304\uff0c\u63d0\u5347\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-74929","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74929","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=74929"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74929\/revisions"}],"predecessor-version":[{"id":74930,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/74929\/revisions\/74930"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=74929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=74929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=74929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}