CreateQuery users2 (children 3)
 Identifier users2
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt8
   ColumnDeclaration city_name_uniq (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Identifier uniq
      DataType Tuple (children 1)
       ExpressionList (children 2)
        DataType String
        DataType String
 Storage definition (children 2)
  Function AggregatingMergeTree (children 1)
   ExpressionList
  Identifier id
