{"id":176957,"date":"2024-11-08T12:39:19","date_gmt":"2024-11-08T04:39:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/176957\/"},"modified":"2024-11-08T12:39:20","modified_gmt":"2024-11-08T04:39:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e5%ad%97%e6%ae%b5field_name%e6%b2%92%e6%9c%89%e9%bb%98%e8%aa%8d%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/176957\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u5b57\u6bb5&#8217;field_name&#8217;\u6c92\u6709\u9ed8\u8a8d\u503c"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a4-%e5%ad%97%e6%ae%b5field_name%e6%b2%92%e6%9c%89%e9%bb%98%e8%aa%8d%e5%80%bc-qghbalcBMS\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4 &#8211; \u5b57\u6bb5&#8217;field_name&#8217;\u6c92\u6709\u9ed8\u8a8d\u503c<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e00\u500b\u5e38\u898b\u7684\u932f\u8aa4\u662f\u201c\u5b57\u6bb5&#8217;field_name&#8217;\u6c92\u6709\u9ed8\u8a8d\u503c\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u63d2\u5165\u6578\u64da\u6642\uff0c\u7576\u67d0\u500b\u5b57\u6bb5\u672a\u88ab\u8ce6\u503c\u4e14\u8a72\u5b57\u6bb5\u53c8\u6c92\u6709\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u6642\uff0cMySQL\u6703\u5831\u544a\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u554f\u984c\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-qghbalcBMS\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u7576\u4f60\u5617\u8a66\u5411\u6578\u64da\u8868\u4e2d\u63d2\u5165\u4e00\u689d\u8a18\u9304\u6642\uff0c\u5982\u679c\u67d0\u500b\u5b57\u6bb5\u662f\u5fc5\u586b\u7684\u4f46\u672a\u63d0\u4f9b\u503c\uff0cMySQL\u6703\u8fd4\u56de\u932f\u8aa4\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u5b57\u6bb5\u8a2d\u7f6e\u70baNOT NULL\uff1a<\/strong>\u5982\u679c\u5b57\u6bb5\u88ab\u8a2d\u7f6e\u70baNOT NULL\uff0c\u5247\u5fc5\u9808\u63d0\u4f9b\u4e00\u500b\u503c\u3002<\/li>\n<li><strong>\u7f3a\u5c11\u9ed8\u8a8d\u503c\uff1a<\/strong>\u5982\u679c\u5b57\u6bb5\u6c92\u6709\u8a2d\u7f6e\u9ed8\u8a8d\u503c\uff0c\u5247\u5728\u63d2\u5165\u6642\u5fc5\u9808\u63d0\u4f9b\u4e00\u500b\u503c\u3002<\/li>\n<li><strong>\u63d2\u5165\u8a9e\u53e5\u932f\u8aa4\uff1a<\/strong>\u63d2\u5165\u8a9e\u53e5\u4e2d\u53ef\u80fd\u7f3a\u5c11\u4e86\u67d0\u4e9b\u5b57\u6bb5\u7684\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-qghbalcBMS\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e6%8f%90%e4%be%9b%e5%ad%97%e6%ae%b5%e7%9a%84%e5%80%bc-qghbalcBMS\">1. \u63d0\u4f9b\u5b57\u6bb5\u7684\u503c<\/h3>\n<p>\u6700\u76f4\u63a5\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u78ba\u4fdd\u5728\u63d2\u5165\u6578\u64da\u6642\u63d0\u4f9b\u6240\u6709\u5fc5\u9700\u5b57\u6bb5\u7684\u503c\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u540d\u70ba`users`\u7684\u8868\uff0c\u5176\u4e2d\u6709\u4e00\u500b`username`\u5b57\u6bb5\u8a2d\u7f6e\u70baNOT NULL\uff0c\u5247\u63d2\u5165\u8a9e\u53e5\u61c9\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>INSERT INTO users (username, email) VALUES ('example_user', 'user@example.com');<\/code><\/pre>\n<h3 id=\"2-%e8%a8%ad%e7%bd%ae%e9%bb%98%e8%aa%8d%e5%80%bc-qghbalcBMS\">2. \u8a2d\u7f6e\u9ed8\u8a8d\u503c<\/h3>\n<p>\u5982\u679c\u67d0\u500b\u5b57\u6bb5\u7d93\u5e38\u4e0d\u9700\u8981\u63d0\u4f9b\u503c\uff0c\u53ef\u4ee5\u8003\u616e\u70ba\u8a72\u5b57\u6bb5\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u3002\u9019\u6a23\uff0c\u5373\u4f7f\u5728\u63d2\u5165\u6642\u672a\u63d0\u4f9b\u8a72\u5b57\u6bb5\u7684\u503c\uff0cMySQL\u4e5f\u6703\u4f7f\u7528\u9ed8\u8a8d\u503c\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc`status`\u5b57\u6bb5\uff0c\u53ef\u4ee5\u9019\u6a23\u8a2d\u7f6e\u9ed8\u8a8d\u503c\uff1a<\/p>\n<pre><code>ALTER TABLE users MODIFY status VARCHAR(10) DEFAULT 'active';<\/code><\/pre>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e6%8f%92%e5%85%a5%e8%aa%9e%e5%8f%a5-qghbalcBMS\">3. \u4fee\u6539\u63d2\u5165\u8a9e\u53e5<\/h3>\n<p>\u78ba\u4fdd\u63d2\u5165\u8a9e\u53e5\u4e2d\u5305\u542b\u6240\u6709\u5fc5\u8981\u7684\u5b57\u6bb5\u3002\u5982\u679c\u67d0\u4e9b\u5b57\u6bb5\u4e0d\u9700\u8981\u5728\u6bcf\u6b21\u63d2\u5165\u6642\u90fd\u63d0\u4f9b\uff0c\u53ef\u4ee5\u5728\u63d2\u5165\u8a9e\u53e5\u4e2d\u660e\u78ba\u5217\u51fa\u9700\u8981\u63d2\u5165\u7684\u5b57\u6bb5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO users (email) VALUES ('user@example.com');<\/code><\/pre>\n<p>\u9019\u6a23\uff0c`username`\u5b57\u6bb5\u5c07\u4f7f\u7528\u5176\u9ed8\u8a8d\u503c\uff08\u5982\u679c\u5df2\u8a2d\u7f6e\uff09\u6216\u5831\u932f\uff08\u5982\u679c\u672a\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u4e14\u70baNOT NULL\uff09\u3002<\/p>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-qghbalcBMS\">4. \u6aa2\u67e5\u6578\u64da\u5eab\u7d50\u69cb<\/h3>\n<p>\u5728\u9032\u884c\u4efb\u4f55\u66f4\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u6aa2\u67e5\u6578\u64da\u5eab\u7684\u7d50\u69cb\uff0c\u78ba\u4fdd\u6240\u6709\u5b57\u6bb5\u7684\u8a2d\u7f6e\u7b26\u5408\u9810\u671f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u8868\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE users;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u6240\u6709\u5b57\u6bb5\u53ca\u5176\u5c6c\u6027\uff0c\u5305\u62ec\u662f\u5426\u70baNOT NULL\u548c\u9ed8\u8a8d\u503c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qghbalcBMS\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u4e2d\u9047\u5230\u201c\u5b57\u6bb5&#8217;field_name&#8217;\u6c92\u6709\u9ed8\u8a8d\u503c\u201d\u7684\u932f\u8aa4\u6642\uff0c\u901a\u5e38\u662f\u56e0\u70ba\u672a\u63d0\u4f9b\u5fc5\u9700\u7684\u5b57\u6bb5\u503c\u6216\u8a72\u5b57\u6bb5\u672a\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u3002\u901a\u904e\u63d0\u4f9b\u5fc5\u8981\u7684\u503c\u3001\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u6216\u6aa2\u67e5\u63d2\u5165\u8a9e\u53e5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u914d\u7f6e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa4\uff1a\u5b57\u6bb5&#8217;field_name&#8217;\u6c92\u6709\u9ed8\u8a8d\u503c\uff0c\u901a\u904e\u8a2d\u7f6e\u9ed8\u8a8d\u503c\u6216\u4fee\u6539\u63d2\u5165\u8a9e\u53e5\u4f86\u89e3\u6c7a\u554f\u984c\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-176957","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176957","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=176957"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176957\/revisions"}],"predecessor-version":[{"id":176958,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/176957\/revisions\/176958"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=176957"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=176957"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=176957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}