CreateQuery optimize_lazy_materialization_with_nested_data_type (children 3)
 Identifier optimize_lazy_materialization_with_nested_data_type
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration a (children 1)
    DataType UInt64
   ColumnDeclaration b (children 1)
    DataType UInt64
   ColumnDeclaration c (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair id (children 1)
       DataType UInt32
      NameTypePair order (children 1)
       DataType String
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier a
