AlterQuery  non_metadata_alters (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration value6 (children 1)
    DataType Decimal (children 1)
     ExpressionList (children 2)
      Literal UInt64_3
      Literal UInt64_3
 Identifier non_metadata_alters
