SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 5)
    Function toInt256 (alias y) (children 1)
     ExpressionList (children 1)
      Identifier number
    Function toDecimal32 (children 1)
     ExpressionList (children 2)
      Identifier y
      Literal UInt64_1
    Function toDecimal64 (children 1)
     ExpressionList (children 2)
      Identifier y
      Literal UInt64_5
    Function toDecimal128 (children 1)
     ExpressionList (children 2)
      Identifier y
      Literal UInt64_6
    Function toDecimal256 (children 1)
     ExpressionList (children 2)
      Identifier y
      Literal UInt64_7
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 2)
        Literal UInt64_5
        Literal UInt64_1