SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function sleep (children 1)
     ExpressionList (children 1)
      Literal Float64_0.5
    Function ignore (children 1)
     ExpressionList (children 1)
      Literal \'test real time query profiler\'