CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType AggregateFunction (children 1)
         ExpressionList (children 2)
          Identifier uniq
          DataType UInt64
 Storage definition (children 1)
  Function Memory