SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function quantileGKMerge (children 2)
     ExpressionList (children 1)
      Identifier x
     ExpressionList (children 2)
      Literal UInt64_100
      Literal Float64_0.5
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Function quantileGKState (alias x) (children 2)
            ExpressionList (children 1)
             Function plus (children 1)
              ExpressionList (children 2)
               Identifier number
               Literal UInt64_1
            ExpressionList (children 2)
             Literal UInt64_100
             Literal Float64_0.5
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function numbers (children 1)
              ExpressionList (children 1)
               Literal UInt64_49999
