CreateQuery testmt (children 3)
 Identifier testmt
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration CounterID (children 1)
    DataType UInt64
   ColumnDeclaration value (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier CounterID
