AlterQuery  alias_column_should_not_allow_compression (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration user_id_hashed_1 (children 3)
    DataType UInt64
    Function cityHash64 (children 1)
     ExpressionList (children 1)
      Identifier user_id
    Function CODEC (children 1)
     ExpressionList (children 1)
      Function LZ4HC (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
 Identifier alias_column_should_not_allow_compression
