IF OBJECT_ID('dbo.SchemaVersion', 'U') IS NULL
BEGIN
    CREATE TABLE dbo.SchemaVersion (
        VersionNumber VARCHAR(20) NOT NULL PRIMARY KEY,
        AppliedOn DATETIME2 NOT NULL DEFAULT GETDATE(),
        AppliedBy VARCHAR(100) NOT NULL DEFAULT SUSER_SNAME(),
        ScriptDescription VARCHAR(255) NULL
    );
    PRINT 'Table dbo.SchemaVersion created successfully.';
END
ELSE
BEGIN
    PRINT 'Table dbo.SchemaVersion already exists.';
END
GO