{"id":174993,"date":"2024-11-08T01:34:29","date_gmt":"2024-11-07T17:34:29","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174993\/"},"modified":"2024-11-08T01:34:30","modified_gmt":"2024-11-07T17:34:30","slug":"%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4sql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e8%87%aa%e5%a2%9e%e4%b8%bb%e9%8d%b5%ef%bc%9f-sql%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4%e8%87%aa%e5%a2%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174993\/","title":{"rendered":"\u5982\u4f55\u522a\u9664SQL\u6578\u64da\u5eab\u4e2d\u7684\u81ea\u589e\u4e3b\u9375\uff1f (sql\u6578\u64da\u5eab\u522a\u9664\u81ea\u589e\u4e3b\u9375)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%88%aa%e9%99%a4sql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e8%87%aa%e5%a2%9e%e4%b8%bb%e9%8d%b5%ef%bc%9f-uraDaSXsNZ\">\u5982\u4f55\u522a\u9664SQL\u6578\u64da\u5eab\u4e2d\u7684\u81ea\u589e\u4e3b\u9375\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u81ea\u589e\u4e3b\u9375\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u7528\u6cd5\uff0c\u901a\u5e38\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u522a\u9664\u6216\u66f4\u6539\u81ea\u589e\u4e3b\u9375\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728SQL\u6578\u64da\u5eab\u4e2d\u522a\u9664\u81ea\u589e\u4e3b\u9375\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%87%aa%e5%a2%9e%e4%b8%bb%e9%8d%b5%ef%bc%9f-uraDaSXsNZ\">\u4ec0\u9ebc\u662f\u81ea\u589e\u4e3b\u9375\uff1f<\/h2>\n<p>\u81ea\u589e\u4e3b\u9375\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u4e3b\u9375\u985e\u578b\uff0c\u7576\u60a8\u63d2\u5165\u65b0\u8a18\u9304\u6642\uff0c\u6578\u64da\u5eab\u6703\u81ea\u52d5\u70ba\u8a72\u4e3b\u9375\u751f\u6210\u552f\u4e00\u7684\u6574\u6578\u503c\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u689d\u8a18\u9304\u90fd\u6709\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff0c\u4e26\u4e14\u4e0d\u9700\u8981\u624b\u52d5\u7ba1\u7406\u4e3b\u9375\u7684\u503c\u3002\u81ea\u589e\u4e3b\u9375\u901a\u5e38\u7528\u65bc\u8868\u4e2d\u7684ID\u6b04\u4f4d\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%88%aa%e9%99%a4%e8%87%aa%e5%a2%9e%e4%b8%bb%e9%8d%b5%ef%bc%9f-uraDaSXsNZ\">\u70ba\u4ec0\u9ebc\u9700\u8981\u522a\u9664\u81ea\u589e\u4e3b\u9375\uff1f<\/h2>\n<p>\u522a\u9664\u81ea\u589e\u4e3b\u9375\u7684\u539f\u56e0\u53ef\u80fd\u6709\u591a\u7a2e\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u8b8a\u66f4<\/li>\n<li>\u9700\u8981\u5c07\u81ea\u589e\u4e3b\u9375\u66f4\u6539\u70ba\u5176\u4ed6\u985e\u578b\u7684\u4e3b\u9375<\/li>\n<li>\u6578\u64da\u6e05\u7406\u6216\u91cd\u69cb<\/li>\n<\/ul>\n<h2 id=\"%e5%88%aa%e9%99%a4%e8%87%aa%e5%a2%9e%e4%b8%bb%e9%8d%b5%e7%9a%84%e6%ad%a5%e9%a9%9f-uraDaSXsNZ\">\u522a\u9664\u81ea\u589e\u4e3b\u9375\u7684\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u522a\u9664SQL\u6578\u64da\u5eab\u4e2d\u81ea\u589e\u4e3b\u9375\u7684\u57fa\u672c\u6b65\u9a5f\u3002\u9019\u4e9b\u6b65\u9a5f\u4ee5MySQL\u70ba\u4f8b\uff0c\u4f46\u5728\u5176\u4ed6SQL\u6578\u64da\u5eab\u4e2d\u4e5f\u6709\u985e\u4f3c\u7684\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e5%82%99%e4%bb%bd%e6%95%b8%e6%93%9a-uraDaSXsNZ\">\u6b65\u9a5f1\uff1a\u5099\u4efd\u6578\u64da<\/h3>\n<p>\u5728\u9032\u884c\u4efb\u4f55\u7d50\u69cb\u6027\u66f4\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u60a8\u5148\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u6578\u64da\u4e1f\u5931\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e5%88%aa%e9%99%a4%e8%87%aa%e5%a2%9e%e5%b1%ac%e6%80%a7-uraDaSXsNZ\">\u6b65\u9a5f2\uff1a\u522a\u9664\u81ea\u589e\u5c6c\u6027<\/h3>\n<p>\u8981\u522a\u9664\u81ea\u589e\u4e3b\u9375\uff0c\u60a8\u9700\u8981\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name MODIFY COLUMN your_column_name INT;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u60a8\u9700\u8981\u5c07<code>your_table_name<\/code>\u66ff\u63db\u70ba\u60a8\u7684\u8868\u540d\uff0c<code>your_column_name<\/code>\u66ff\u63db\u70ba\u60a8\u8981\u522a\u9664\u81ea\u589e\u5c6c\u6027\u7684\u5217\u540d\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e5%88%aa%e9%99%a4%e4%b8%bb%e9%8d%b5%e7%b4%84%e6%9d%9f%ef%bc%88%e5%a6%82%e6%9e%9c%e9%9c%80%e8%a6%81%ef%bc%89-uraDaSXsNZ\">\u6b65\u9a5f3\uff1a\u522a\u9664\u4e3b\u9375\u7d04\u675f\uff08\u5982\u679c\u9700\u8981\uff09<\/h3>\n<p>\u5982\u679c\u60a8\u9084\u9700\u8981\u522a\u9664\u4e3b\u9375\u7d04\u675f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name DROP PRIMARY KEY;<\/code><\/pre>\n<p>\u9019\u5c07\u522a\u9664\u8868\u4e2d\u7684\u4e3b\u9375\u7d04\u675f\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f4%ef%bc%9a%e9%87%8d%e6%96%b0%e8%a8%ad%e7%bd%ae%e4%b8%bb%e9%8d%b5%ef%bc%88%e5%8f%af%e9%81%b8%ef%bc%89-uraDaSXsNZ\">\u6b65\u9a5f4\uff1a\u91cd\u65b0\u8a2d\u7f6e\u4e3b\u9375\uff08\u53ef\u9078\uff09<\/h3>\n<p>\u5982\u679c\u60a8\u5e0c\u671b\u5c07\u5176\u4ed6\u5217\u8a2d\u7f6e\u70ba\u4e3b\u9375\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name ADD PRIMARY KEY (new_column_name);<\/code><\/pre>\n<p>\u5c07<code>new_column_name<\/code>\u66ff\u63db\u70ba\u60a8\u5e0c\u671b\u8a2d\u7f6e\u70ba\u4e3b\u9375\u7684\u5217\u540d\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-uraDaSXsNZ\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u522a\u9664\u81ea\u589e\u4e3b\u9375\u6642\uff0c\u8acb\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u8868\u4f9d\u8cf4\u65bc\u8a72\u4e3b\u9375\uff0c\u5426\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5b8c\u6574\u6027\u554f\u984c\u3002<\/li>\n<li>\u5728\u522a\u9664\u4e3b\u9375\u7d04\u675f\u5f8c\uff0c\u8acb\u6aa2\u67e5\u6578\u64da\u7684\u552f\u4e00\u6027\uff0c\u907f\u514d\u51fa\u73fe\u91cd\u8907\u503c\u3002<\/li>\n<li>\u5728\u9032\u884c\u7d50\u69cb\u6027\u66f4\u6539\u6642\uff0c\u5efa\u8b70\u5728\u975e\u9ad8\u5cf0\u6642\u6bb5\u9032\u884c\uff0c\u4ee5\u6e1b\u5c11\u5c0d\u7528\u6236\u7684\u5f71\u97ff\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uraDaSXsNZ\">\u7e3d\u7d50<\/h2>\n<p>\u522a\u9664SQL\u6578\u64da\u5eab\u4e2d\u7684\u81ea\u589e\u4e3b\u9375\u662f\u4e00\u500b\u9700\u8981\u8b39\u614e\u64cd\u4f5c\u7684\u904e\u7a0b\u3002\u901a\u904e\u9075\u5faa\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u5b89\u5168\u5730\u522a\u9664\u81ea\u589e\u4e3b\u9375\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\u3002\u7121\u8ad6\u60a8\u662f\u5728\u9032\u884c\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u8b8a\u66f4\uff0c\u9084\u662f\u9700\u8981\u6e05\u7406\u6578\u64da\uff0c\u4e86\u89e3\u5982\u4f55\u64cd\u4f5c\u81ea\u589e\u4e3b\u9375\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\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\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL\u6578\u64da\u5eab\u4e2d\u522a\u9664\u81ea\u589e\u4e3b\u9375\uff0c\u7c21\u55ae\u6b65\u9a5f\u6559\u4f60\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\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-174993","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174993","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=174993"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174993\/revisions"}],"predecessor-version":[{"id":174994,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174993\/revisions\/174994"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}