AlterQuery  aliases_test (children 2)
 ExpressionList (children 2)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration struct.key (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt8
    Literal Array_[UInt64_0, UInt64_1, UInt64_2]
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration struct.value (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt8
    Identifier array
 Identifier aliases_test