{"id":76358,"date":"2024-10-16T06:00:14","date_gmt":"2024-10-15T22:00:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76358\/"},"modified":"2024-10-16T06:00:15","modified_gmt":"2024-10-15T22:00:15","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e4%bf%ae%e6%94%b9%ef%bc%9f-mysql%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76358\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\uff1a\u5982\u4f55\u9032\u884c\u6578\u64da\u4fee\u6539\uff1f (MySQL\u4fee\u6539\u6578\u64da\u5eab\u6578\u64da)"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e5%a6%82%e4%bd%95%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e4%bf%ae%e6%94%b9%ef%bc%9f-pAOavukBUa\">MySQL\u6578\u64da\u5eab\uff1a\u5982\u4f55\u9032\u884c\u6578\u64da\u4fee\u6539\uff1f<\/h1>\n<p>MySQL\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u6578\u64da\u7684\u4fee\u6539\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u6700\u5e38\u898b\u7684\u9700\u6c42\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u9032\u884c\u6578\u64da\u4fee\u6539\uff0c\u5305\u62ec\u4f7f\u7528SQL\u8a9e\u53e5\u7684\u57fa\u672c\u65b9\u6cd5\u548c\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b8%e6%93%9a%e4%bf%ae%e6%94%b9%e8%aa%9e%e5%8f%a5-pAOavukBUa\">\u57fa\u672c\u7684\u6578\u64da\u4fee\u6539\u8a9e\u53e5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u4fee\u6539\u6578\u64da\u7684\u4e3b\u8981\u8a9e\u53e5\u662f<strong>UPDATE<\/strong>\u8a9e\u53e5\u3002\u9019\u500b\u8a9e\u53e5\u5141\u8a31\u7528\u6236\u66f4\u65b0\u8868\u4e2d\u7684\u4e00\u500b\u6216\u591a\u500b\u8a18\u9304\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE \u8868\u540d\nSET \u5217\u540d1 = \u503c1, \u5217\u540d2 = \u503c2, ...\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<strong>\u8868\u540d<\/strong>\u662f\u4f60\u60f3\u8981\u4fee\u6539\u7684\u6578\u64da\u8868\u7684\u540d\u7a31\uff0c<strong>\u5217\u540d<\/strong>\u662f\u4f60\u60f3\u8981\u66f4\u65b0\u7684\u5217\uff0c\u800c<strong>\u689d\u4ef6<\/strong>\u5247\u7528\u65bc\u6307\u5b9a\u54ea\u4e9b\u8a18\u9304\u9700\u8981\u88ab\u66f4\u65b0\u3002\u6c92\u6709\u689d\u4ef6\u7684UPDATE\u8a9e\u53e5\u5c07\u6703\u66f4\u65b0\u8868\u4e2d\u6240\u6709\u7684\u8a18\u9304\uff0c\u9019\u901a\u5e38\u4e0d\u662f\u6211\u5011\u60f3\u8981\u7684\u7d50\u679c\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-pAOavukBUa\">\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<strong>users<\/strong>\u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>+----+----------+-------+\n| id | username | age   |\n+----+----------+-------+\n| 1  | Alice    | 25    |\n| 2  | Bob      | 30    |\n| 3  | Charlie  | 35    |\n+----+----------+-------+<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u5c07Bob\u7684\u5e74\u9f61\u66f4\u65b0\u70ba31\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE users\nSET age = 31\nWHERE username = 'Bob';<\/code><\/pre>\n<p>\u57f7\u884c\u9019\u689d\u8a9e\u53e5\u5f8c\uff0c<strong>users<\/strong>\u8868\u5c07\u6703\u8b8a\u70ba\uff1a<\/p>\n<pre><code>+----+----------+-------+\n| id | username | age   |\n+----+----------+-------+\n| 1  | Alice    | 25    |\n| 2  | Bob      | 31    |\n| 3  | Charlie  | 35    |\n+----+----------+-------+<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%a4%9a%e6%a2%9d%e6%9b%b4%e6%96%b0-pAOavukBUa\">\u4f7f\u7528\u591a\u689d\u66f4\u65b0<\/h2>\n<p>\u6709\u6642\u5019\uff0c\u6211\u5011\u9700\u8981\u540c\u6642\u66f4\u65b0\u591a\u500b\u5217\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728SET\u5b50\u53e5\u4e2d\u6307\u5b9a\u591a\u500b\u5217\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u540c\u6642\u66f4\u65b0Bob\u7684\u5e74\u9f61\u548c\u7528\u6236\u540d\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>UPDATE users\nSET age = 31, username = 'Bobby'\nWHERE id = 2;<\/code><\/pre>\n<p>\u9019\u6a23\uff0cBob\u7684\u5e74\u9f61\u548c\u7528\u6236\u540d\u90fd\u6703\u88ab\u66f4\u65b0\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-pAOavukBUa\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u4efb\u4f55\u6578\u64da\u4fee\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u640d\u5931\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u9032\u884c\u591a\u689d\u66f4\u65b0\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5982\u679c\u5176\u4e2d\u4e00\u689d\u66f4\u65b0\u5931\u6557\uff0c\u53ef\u4ee5\u56de\u6efe\u6240\u6709\u66f4\u6539\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u66f4\u65b0\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884cUPDATE\u8a9e\u53e5\u4e4b\u524d\uff0c\u6700\u597d\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u6e2c\u8a66\uff0c\u4ee5\u78ba\u4fdd\u7d50\u679c\u7b26\u5408\u9810\u671f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-pAOavukBUa\">\u7d50\u8ad6<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6578\u64da\u4fee\u6539\u529f\u80fd\uff0c\u901a\u904e\u4f7f\u7528UPDATE\u8a9e\u53e5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u66f4\u65b0\u6578\u64da\u5eab\u4e2d\u7684\u8a18\u9304\u3002\u7121\u8ad6\u662f\u55ae\u689d\u8a18\u9304\u7684\u66f4\u65b0\u9084\u662f\u591a\u689d\u8a18\u9304\u7684\u6279\u91cf\u66f4\u65b0\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u90fd\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728MySQL\u6578\u64da\u5eab\u4e2d\u9032\u884c\u6578\u64da\u4fee\u6539\uff0c\u5305\u62ecUPDATE\u8a9e\u53e5\u7684\u4f7f\u7528\u548c\u6700\u4f73\u5be6\u8e10\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-76358","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76358","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=76358"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76358\/revisions"}],"predecessor-version":[{"id":76359,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76358\/revisions\/76359"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}