{"id":177197,"date":"2024-11-08T14:09:20","date_gmt":"2024-11-08T06:09:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177197\/"},"modified":"2024-11-08T14:09:20","modified_gmt":"2024-11-08T06:09:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41088-sql%e7%8b%80%e6%85%8b%ef%bc%9ahy000%ef%bc%88er_alter_info%ef%bc%89%e8%a8%98%e9%8c%84%ef%bc%9ald%e9%87%8d%e8%a4%87%ef%bc%9ald","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177197\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41088 &#8211; SQL\u72c0\u614b\uff1aHY000\uff08ER_ALTER_INFO\uff09\u8a18\u9304\uff1a%ld\u91cd\u8907\uff1a%ld"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41088-sql%e7%8b%80%e6%85%8b%ef%bc%9ahy000%ef%bc%88er_alter_info%ef%bc%89%e8%a8%98%e9%8c%84%ef%bc%9ald%e9%87%8d%e8%a4%87%ef%bc%9ald-kSJXswYzgW\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41088 &#8211; SQL\u72c0\u614b\uff1aHY000\uff08ER_ALTER_INFO\uff09\u8a18\u9304\uff1a%ld\u91cd\u8907\uff1a%ld<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41088\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207ALTER TABLE\u8a9e\u53e5\u6709\u95dc\uff0c\u4e26\u4e14\u6703\u986f\u793aSQL\u72c0\u614b\u70baHY000\uff0c\u63d0\u793a\u7528\u6236\u5728\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\u6642\u51fa\u73fe\u4e86\u91cd\u8907\u7684\u8a18\u9304\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a41088%e7%9a%84%e5%8e%9f%e5%9b%a0-kSJXswYzgW\">\u932f\u8aa41088\u7684\u539f\u56e0<\/h2>\n<p>MySQL\u932f\u8aa41088\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u4fee\u6539\u8868\u7d50\u69cb\u6642\uff0c\u4f8b\u5982\u6dfb\u52a0\u3001\u522a\u9664\u6216\u4fee\u6539\u5217\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u7576\u4f60\u5617\u8a66\u5728\u8868\u4e2d\u6dfb\u52a0\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u5217\uff0c\u6216\u8005\u5728\u4e00\u500b\u552f\u4e00\u7d22\u5f15\u4e2d\u63d2\u5165\u91cd\u8907\u7684\u503c\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u9019\u500b\u932f\u8aa4\u3002\u9019\u610f\u5473\u8457MySQL\u7121\u6cd5\u5b8c\u6210\u8acb\u6c42\u7684\u64cd\u4f5c\uff0c\u56e0\u70ba\u9019\u5c07\u9055\u53cd\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f\u3002<\/p>\n<h3 id=\"%e5%b8%b8%e8%a6%8b%e5%a0%b4%e6%99%af-kSJXswYzgW\">\u5e38\u898b\u5834\u666f<\/h3>\n<ul>\n<li>\u5617\u8a66\u6dfb\u52a0\u4e00\u500b\u5df2\u5b58\u5728\u7684\u5217\u540d\u3002<\/li>\n<li>\u5728\u552f\u4e00\u7d22\u5f15\u4e2d\u63d2\u5165\u91cd\u8907\u7684\u503c\u3002<\/li>\n<li>\u4fee\u6539\u5217\u7684\u6578\u64da\u985e\u578b\uff0c\u5c0e\u81f4\u8207\u73fe\u6709\u6578\u64da\u4e0d\u517c\u5bb9\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41088-kSJXswYzgW\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41088<\/h2>\n<p>\u4fee\u5fa9MySQL\u932f\u8aa41088\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e8%a1%a8%e7%b5%90%e6%a7%8b-kSJXswYzgW\">1. \u6aa2\u67e5\u8868\u7d50\u69cb<\/h3>\n<p>\u9996\u5148\uff0c\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u6aa2\u67e5\u8868\u7684\u7d50\u69cb\uff0c\u78ba\u4fdd\u4f60\u8981\u6dfb\u52a0\u6216\u4fee\u6539\u7684\u5217\u4e0d\u5b58\u5728\uff1a<\/p>\n<pre><code>SHOW COLUMNS FROM your_table_name;<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u8868\u4e2d\u6240\u6709\u7684\u5217\uff0c\u5e6b\u52a9\u4f60\u78ba\u8a8d\u662f\u5426\u6709\u91cd\u8907\u7684\u5217\u540d\u3002<\/p>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5%e5%94%af%e4%b8%80%e7%b4%a2%e5%bc%95-kSJXswYzgW\">2. \u6aa2\u67e5\u552f\u4e00\u7d22\u5f15<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u662f\u7531\u65bc\u552f\u4e00\u7d22\u5f15\u5f15\u8d77\u7684\uff0c\u5247\u9700\u8981\u6aa2\u67e5\u8a72\u7d22\u5f15\u7684\u5b9a\u7fa9\u3002\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u67e5\u770b\u7d22\u5f15\uff1a<\/p>\n<pre><code>SHOW INDEX FROM your_table_name;<\/code><\/pre>\n<p>\u78ba\u4fdd\u4f60\u8981\u63d2\u5165\u7684\u6578\u64da\u4e0d\u6703\u9055\u53cd\u552f\u4e00\u6027\u7d04\u675f\u3002\u5982\u679c\u6709\u91cd\u8907\u7684\u503c\uff0c\u5247\u9700\u8981\u522a\u9664\u6216\u66f4\u65b0\u9019\u4e9b\u503c\u3002<\/p>\n<h3 id=\"3-%e4%bf%ae%e6%94%b9%e6%88%96%e5%88%aa%e9%99%a4%e9%87%8d%e8%a4%87%e7%9a%84%e6%95%b8%e6%93%9a-kSJXswYzgW\">3. \u4fee\u6539\u6216\u522a\u9664\u91cd\u8907\u7684\u6578\u64da<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u6709\u91cd\u8907\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u522a\u9664\u6216\u66f4\u65b0\u9019\u4e9b\u6578\u64da\uff1a<\/p>\n<pre><code>DELETE FROM your_table_name WHERE condition;<\/code><\/pre>\n<p>\u6216\u8005\uff0c\u4f7f\u7528UPDATE\u8a9e\u53e5\u4f86\u4fee\u6539\u91cd\u8907\u7684\u6578\u64da\u3002<\/p>\n<h3 id=\"4-%e9%87%8d%e6%96%b0%e5%9f%b7%e8%a1%8calter-table%e8%aa%9e%e5%8f%a5-kSJXswYzgW\">4. \u91cd\u65b0\u57f7\u884cALTER TABLE\u8a9e\u53e5<\/h3>\n<p>\u5728\u78ba\u8a8d\u6c92\u6709\u91cd\u8907\u7684\u5217\u6216\u6578\u64da\u5f8c\uff0c\u53ef\u4ee5\u91cd\u65b0\u57f7\u884cALTER TABLE\u8a9e\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name ADD COLUMN new_column_name INT;<\/code><\/pre>\n<p>\u9019\u6a23\u61c9\u8a72\u80fd\u5920\u6210\u529f\u57f7\u884c\uff0c\u800c\u4e0d\u6703\u518d\u51fa\u73fe\u932f\u8aa41088\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kSJXswYzgW\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41088\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u901a\u5e38\u8207\u8868\u7d50\u69cb\u7684\u4fee\u6539\u6709\u95dc\u3002\u901a\u904e\u6aa2\u67e5\u8868\u7d50\u69cb\u548c\u552f\u4e00\u7d22\u5f15\uff0c\u4e26\u78ba\u4fdd\u6c92\u6709\u91cd\u8907\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u9078\u64c7\u4e00\u500b\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u63d0\u4f9b\u5546\u90fd\u80fd\u5920\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7ba1\u7406\u548c\u904b\u884c\u4f60\u7684\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41088\uff08SQL\u72c0\u614bHY000\uff09\u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u91cd\u8907\u8a18\u9304\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u9806\u5229\u9032\u884c\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-177197","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177197","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=177197"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177197\/revisions"}],"predecessor-version":[{"id":177198,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177197\/revisions\/177198"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}