N 的含義

原創 baoshan 2020-02-25 02:02
N表示Unicode的含義,就象類型中有varchar和nvarchar一樣,一個Unicode字符佔兩個字節.使用N'的情況主要是在雙字節系統環境中強制系統對每個字符用Unicode標準來解釋,否則如果你的數據庫.mdf文件是中文名而又不加N'的話,數據庫加載後名稱可能就變成亂碼,因爲系統按單字節處理字符造成! 
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