CreateQuery optimize_lazy_materialization_with_array_data_type (children 3)
 Identifier optimize_lazy_materialization_with_array_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 Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 2)
        NameTypePair field1 (children 1)
         DataType UInt64
        NameTypePair field2 (children 1)
         DataType String
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier a
