CreateQuery t3 (children 3)
 Identifier t3
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id (children 1)
    DataType Int32
   ColumnDeclaration c (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      NameTypePair v (children 1)
       DataType String
      NameTypePair pe (children 1)
       DataType Map (children 1)
        ExpressionList (children 2)
         DataType String
         DataType Tuple (children 1)
          ExpressionList (children 2)
           NameTypePair a (children 1)
            DataType UInt64
           NameTypePair b (children 1)
            DataType UInt64
 Storage definition (children 2)
  Function MergeTree
  Identifier id
