SQL Server 中如何设置Unique字段.# Database - 数据库
a*h
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SQL Server 中如何设置Unique字段.
若 *不是* 用sql语句生成table, 如何可以将某项设置Unique字段?
若 *不是* 用sql语句生成table, 如何可以将某项设置Unique字段?
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