CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration tup (children 2)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      DataType UInt64
      DataType UInt64
    Set
 Storage definition (children 3)
  Function MergeTree
  Identifier id
  Set
