为什么我不能“SELECT INTO”名称以数字开头的数据库？

Main.dbName = "7202" 

query = "select * into " + Main.dbName + ".dbo.[AccountReceivableHistory]
        from " + dbOrigin + ".dbo.[AccountReceivableHistory] where
        AccountReceivableHistory].Date >= '2012-12-27' and    
        AccountReceivableHistory].Date < '2012-12-28'"
Main.dbName = "7202" 

query = "select * into "