if not exists(select * from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA = 'auditlog' AND TABLE_NAME = 'Users')
    create table auditlog.Users(
        USERID int not null identity(-1000, -1),
        USERNAME nvarchar(1000) not null,
        CREATED datetime not null default (getdate()),
        constraint PK_auditlog_Users primary key clustered (USERID desc),
        constraint UK_auditlog_Users unique (USERNAME)
    )