AlterQuery  enum_alter_issue (children 2)
 ExpressionList (children 1)
  AlterCommand MODIFY_COLUMN (children 1)
   ColumnDeclaration a (children 1)
    DataType Enum8 (children 1)
     ExpressionList (children 3)
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'one\'
        Literal UInt64_1
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'two\'
        Literal UInt64_2
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'three\'
        Literal UInt64_3
 Identifier enum_alter_issue
