CreateQuery 02500_nested (children 3)
 Identifier 02500_nested
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration nes (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 2)
        NameTypePair a (children 1)
         DataType Int32
        NameTypePair b (children 1)
         DataType Int32
   ColumnDeclaration z (children 1)
    DataType Int32
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
