CreateQuery table_for_rename_nested (children 3)
 Identifier table_for_rename_nested
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration date (children 1)
    DataType Date
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration n (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair x (children 1)
       DataType UInt32
      NameTypePair y (children 1)
       DataType String
   ColumnDeclaration value1 (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier date
  Identifier key
