text: create table dbo.Market
  (
      MarketId   int identity                               not null,
      MarketName varchar(60)                                not null,
      EventId    int                                        not null,
      Url        varchar(240)                               not null,
      Num        tinyint                                    not null,
      CreatedAt  datetimeoffset default sysdatetimeoffset() not null,
      constraint PK_MarketId primary key (MarketId),
      constraint UQ_Market unique (MarketName, EventId),
      constraint FK_Market_Event foreign key (EventId) references Event on update cascade on delete cascade
  )
  