SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function quantile (children 2)
     ExpressionList (children 1)
      Identifier b
     ExpressionList (children 1)
      Literal Float64_0.5
    Function quantile (children 2)
     ExpressionList (children 1)
      Identifier b
     ExpressionList (children 1)
      Literal Float64_0.9
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Function plus (alias b) (children 1)
            ExpressionList (children 2)
             Identifier x
             Literal UInt64_1
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Subquery (children 1)
              SelectWithUnionQuery (children 1)
               ExpressionList (children 1)
                SelectQuery (children 2)
                 ExpressionList (children 2)
                  Function quantile (alias x) (children 2)
                   ExpressionList (children 1)
                    Identifier b
                   ExpressionList (children 1)
                    Literal Float64_0.5
                  Function quantile (children 2)
                   ExpressionList (children 1)
                    Identifier b
                   ExpressionList (children 1)
                    Literal Float64_0.9
                 TablesInSelectQuery (children 1)
                  TablesInSelectQueryElement (children 1)
                   TableExpression (children 1)
                    TableIdentifier fuse_tbl
          ExpressionList (children 1)
           Identifier x
