CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration agg (children 1)
    DataType AggregateFunction (children 1)
     ExpressionList (children 2)
      Function groupArraySorted (children 1)
       ExpressionList (children 1)
        Literal UInt64_2
      DataType UInt64
 Storage definition (children 2)
  Function MergeTree
  Identifier id
