CreateQuery tmp (children 2)
 Identifier tmp
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Function initialQueryStartTime (alias it) (children 1)
      ExpressionList
     Function now (alias t) (children 1)
      ExpressionList
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.one
    Function not (children 1)
     ExpressionList (children 1)
      Function ignore (children 1)
       ExpressionList (children 1)
        Function sleep (children 1)
         ExpressionList (children 1)
          Literal Float64_0.5
