{"id":186384,"date":"2024-11-11T05:28:18","date_gmt":"2024-11-10T21:28:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186384\/"},"modified":"2024-11-11T05:28:19","modified_gmt":"2024-11-10T21:28:19","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84bit%e5%9e%8b%e5%ad%97%e6%ae%b5%e5%9c%a8%e7%b7%a8%e7%a8%8b%e4%b8%ad%e6%9c%89%e4%bd%95%e4%bd%9c%e7%94%a8%ef%bc%9f%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%abbit%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186384\/","title":{"rendered":"\u6578\u64da\u5eab\u7684bit\u578b\u5b57\u6bb5\u5728\u7de8\u7a0b\u4e2d\u6709\u4f55\u4f5c\u7528\uff1f\uff08\u6578\u64da\u5eabbit\u578b\u5c0d\u61c9\u4ec0\u9ebc\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84bit%e5%9e%8b%e5%ad%97%e6%ae%b5%e5%9c%a8%e7%b7%a8%e7%a8%8b%e4%b8%ad%e6%9c%89%e4%bd%95%e4%bd%9c%e7%94%a8%ef%bc%9f%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%abbit%e5%9e%8b-SRxcxIUVOY\">\u6578\u64da\u5eab\u7684bit\u578b\u5b57\u6bb5\u5728\u7de8\u7a0b\u4e2d\u6709\u4f55\u4f5c\u7528\uff1f\uff08\u6578\u64da\u5eabbit\u578b\u5c0d\u61c9\u4ec0\u9ebc\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5b57\u6bb5\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002bit\u578b\u5b57\u6bb5\u4f5c\u70ba\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\uff0c\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u5e03\u723e\u503c\uff08true\/false\uff09\u6216\u4e8c\u9032\u5236\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0ebit\u578b\u5b57\u6bb5\u5728\u7de8\u7a0b\u4e2d\u7684\u4f5c\u7528\u53ca\u5176\u5728\u6578\u64da\u5eab\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afbit%e5%9e%8b%e5%ad%97%e6%ae%b5%ef%bc%9f-SRxcxIUVOY\">\u4ec0\u9ebc\u662fbit\u578b\u5b57\u6bb5\uff1f<\/h2>\n<p>bit\u578b\u5b57\u6bb5\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\u7684\u6578\u64da\u985e\u578b\u3002\u5728\u5927\u591a\u6578\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\uff0cbit\u578b\u5b57\u6bb5\u901a\u5e38\u7528\u4f86\u8868\u793a\u5e03\u723e\u503c\uff0c\u9019\u610f\u5473\u8457\u5b83\u5011\u53ef\u4ee5\u5b58\u51320\u62161\uff0c\u5206\u5225\u4ee3\u8868\u5047\uff08false\uff09\u548c\u771f\uff08true\uff09\u3002\u4f8b\u5982\uff0c\u5728SQL Server\u4e2d\uff0cbit\u578b\u5b57\u6bb5\u7684\u5b9a\u7fa9\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    IsActive BIT\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cIsActive\u5b57\u6bb5\u7528\u4f86\u6307\u793a\u7528\u6236\u662f\u5426\u6d3b\u8e8d\u3002\u7576\u7528\u6236\u6d3b\u8e8d\u6642\uff0c\u8a72\u5b57\u6bb5\u7684\u503c\u70ba1\uff1b\u5426\u5247\u70ba0\u3002<\/p>\n<h2 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id=\"bit%e5%9e%8b%e5%ad%97%e6%ae%b5%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-SRxcxIUVOY\">bit\u578b\u5b57\u6bb5\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>bit\u578b\u5b57\u6bb5\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u61c9\u7528\u5834\u666f\uff1a<\/p>\n<h3 id=\"%e7%94%a8%e6%88%b6%e6%ac%8a%e9%99%90%e7%ae%a1%e7%90%86-SRxcxIUVOY\">\u7528\u6236\u6b0a\u9650\u7ba1\u7406<\/h3>\n<p>\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cbit\u578b\u5b57\u6bb5\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u7528\u6236\u7684\u6b0a\u9650\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u540d\u70baIsAdmin\u7684bit\u578b\u5b57\u6bb5\u4f86\u6307\u793a\u7528\u6236\u662f\u5426\u5177\u6709\u7ba1\u7406\u54e1\u6b0a\u9650\uff1a<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    IsAdmin BIT\n);<\/code><\/pre>\n<h3 id=\"%e7%8b%80%e6%85%8b%e6%a8%99%e8%a8%98-SRxcxIUVOY\">\u72c0\u614b\u6a19\u8a18<\/h3>\n<p>\u5728\u8a31\u591a\u696d\u52d9\u61c9\u7528\u4e2d\uff0cbit\u578b\u5b57\u6bb5\u53ef\u4ee5\u7528\u4f86\u6a19\u8a18\u67d0\u500b\u5be6\u9ad4\u7684\u72c0\u614b\u3002\u4f8b\u5982\uff0c\u5728\u8a02\u55ae\u7cfb\u7d71\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u540d\u70baIsShipped\u7684bit\u578b\u5b57\u6bb5\u4f86\u6307\u793a\u8a02\u55ae\u662f\u5426\u5df2\u767c\u8ca8\uff1a<\/p>\n<pre><code>CREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    IsShipped BIT\n);<\/code><\/pre>\n<h3 id=\"%e9%85%8d%e7%bd%ae%e9%81%b8%e9%a0%85-SRxcxIUVOY\">\u914d\u7f6e\u9078\u9805<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5e8f\u7684\u914d\u7f6e\u4e2d\uff0cbit\u578b\u5b57\u6bb5\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u958b\u95dc\u9078\u9805\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u540d\u70baEnableFeatureX\u7684bit\u578b\u5b57\u6bb5\u4f86\u6307\u793a\u67d0\u500b\u529f\u80fd\u662f\u5426\u555f\u7528\uff1a<\/p>\n<pre><code>CREATE TABLE Settings (\n    SettingID INT PRIMARY KEY,\n    EnableFeatureX BIT\n);<\/code><\/pre>\n<h2 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