SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Function length (children 1)
     ExpressionList (children 1)
      Function approx_top_k (children 2)
       ExpressionList (children 1)
        Identifier number
       ExpressionList (children 1)
        Literal UInt64_50
    Function length (children 1)
     ExpressionList (children 1)
      Function approx_top_k (children 2)
       ExpressionList (children 1)
        Identifier number
       ExpressionList (children 1)
        Literal UInt64_100
    Function length (children 1)
     ExpressionList (children 1)
      Function approx_top_k (children 2)
       ExpressionList (children 1)
        Identifier number
       ExpressionList (children 1)
        Literal UInt64_35
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_200
