Answers for "unique data annotation asp.net core"

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ef code first unique constraint

//single index
[Index("IX_First", IsUnique = true)]
public int FirstColumn { get; set; }

// composite index
[Index("IX_FirstAndSecond", 1, IsUnique = true)]
public int FirstColumn { get; set; }

[Index("IX_FirstAndSecond", 2, IsUnique = true)]
public int SecondColumn { get; set; }

Posted by: Guest on April-02-2020

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