{"id":200564,"date":"2025-05-06T09:49:48","date_gmt":"2025-05-06T01:49:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200564\/"},"modified":"2025-05-06T09:49:48","modified_gmt":"2025-05-06T01:49:48","slug":"mysql%e4%b8%ad%ef%bc%8c%e8%a1%a8%e6%b3%a8%e9%87%8a%e8%af%a5%e4%bd%bf%e7%94%a8%e5%8d%95%e5%bc%95%e5%8f%b7%e8%bf%98%e6%98%af%e5%8f%8c%e5%bc%95%e5%8f%b7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200564\/","title":{"rendered":"MySQL\u4e2d\uff0c\u8868\u6ce8\u91ca\u8be5\u4f7f\u7528\u5355\u5f15\u53f7\u8fd8\u662f\u53cc\u5f15\u53f7\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL\u4e2d\uff0c\u8868\u6ce8\u91ca\u8be5\u4f7f\u7528\u5355\u5f15\u53f7\u8fd8\u662f\u53cc\u5f15\u53f7\uff1f<\/h1>\n<p>\u5b66\u4e60\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u5c06\u4f1a\u4ecb\u7ecd\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241108\/1731058067672dd993de78f.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql\u4e2d\u7684\u6ce8\u91ca\u7b26<\/strong><\/p>\n<p>\u5728mysql\u4e2d\uff0c\u5bf9\u8868\u7ed3\u6784\u6216\u6570\u636e\u6dfb\u52a0\u6ce8\u91ca\u65f6\uff0c\u6ce8\u91ca\u7b26\u7684\u9009\u62e9\u53ef\u80fd\u4ee4\u4eba\u56f0\u60d1\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5982\u4f55\u4f7f\u7528\u6b63\u786e\u7684\u6ce8\u91ca\u7b26\uff0c\u89e3\u51b3\u7528\u6237\u63d0\u51fa\u7684\u95ee\u9898\uff0c\u5373\u5728comment\u4e2d\u5e94\u8be5\u4f7f\u7528\u5355\u5f15\u53f7\u8fd8\u662f\u53cc\u5f15\u53f7\u3002<\/p>\n<p><strong>\u8868\u540d\u548c\u5b57\u6bb5\u540d<\/strong><\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5bf9\u4e8e\u8868\u540d\u548c\u5b57\u6bb5\u540d\uff0cmysql\u4f7f\u7528\u53cd\u5f15\u53f7\uff08`\uff09\u4f5c\u4e3a\u4fee\u9970\u7b26\uff0c\u5176\u76ee\u7684\u662f\u4e3a\u4e86\u89e3\u51b3\u540d\u79f0\u51b2\u7a81\u3002\u56e0\u6b64\uff0c\u8868\u540d\u548c\u5b57\u6bb5\u540d\u5fc5\u987b\u7528\u53cd\u5f15\u53f7\u62ec\u8d77\u6765\u3002<\/p>\n<p><strong>\u6ce8\u91ca\u7b26<\/strong><\/p>\n<p>\u5f53\u5728comment\u5b57\u6bb5\u4e2d\u6dfb\u52a0\u6ce8\u91ca\u65f6\uff0c\u6ce8\u91ca\u7b26\u5e94\u4e3a <strong>\u82f1\u6587\u72b6\u6001\u4e0b\u7684\u5355\u5f15\u53f7\uff08&#8217;\uff09<\/strong>\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u8f93\u5165\u6ce8\u91ca\u5185\u5bb9\u524d\uff0c\u8bf7\u786e\u4fdd\u952e\u76d8\u5904\u4e8e\u82f1\u6587\u8f93\u5165\u72b6\u6001\u3002<\/p>\n<p><strong>\u9519\u8bef\u539f\u56e0<\/strong><\/p>\n<p>\u5982\u679c\u4f7f\u7528\u5355\u5f15\u53f7\u5f15\u53d1\u4e86\u9519\u8bef\uff0c\u5219\u53ef\u80fd\u662f\u56e0\u4e3a\uff1a<\/p>\n<ul>\n<li>\u952e\u76d8\u5904\u4e8e\u4e2d\u6587\u8f93\u5165\u72b6\u6001\u3002<\/li>\n<li>\u5355\u5f15\u53f7\u524d\u540e\u6709\u7a7a\u683c\u3002<\/li>\n<\/ul>\n<p><strong>\u6b63\u786e\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u6b63\u786e\u5730\u5411\u8868\u6dfb\u52a0\u6ce8\u91ca\uff1a<\/p>\n<pre>ALTER TABLE `my_table` ADD COLUMN `my_column` INT NOT NULL COMMENT 'This is a comment';<\/pre>\n<p><strong>\u4f5c\u8005\u5efa\u8bae<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u9047\u5230\u4e86\u7c7b\u4f3c\u7684\u95ee\u9898\uff0c\u8bf7\u68c0\u67e5\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li>\u786e\u4fdd\u952e\u76d8\u5904\u4e8e\u82f1\u6587\u8f93\u5165\u72b6\u6001\u3002<\/li>\n<li>\u4ed4\u7ec6\u68c0\u67e5\u60a8\u7684\u8bed\u6cd5\uff0c\u786e\u4fdd\u6ca1\u6709\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aMySQL\u4e2d\uff0c\u8868\u6ce8\u91ca\u8be5\u4f7f\u7528\u5355\u5f15\u53f7\u8fd8\u662f\u53cc\u5f15\u53f7\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n 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