# Missing Result Details for int64 and datetime64 Types in ExpectColumnValuesToBeOfType

**URL:** <https://discourse.greatexpectations.io/t/missing-result-details-for-int64-and-datetime64-types-in-expectcolumnvaluestobeoftype/1925>\
**Category:** GX Core Support\
**Created:** [October 1, 2024, 11:34am UTC](https://discourse.greatexpectations.io/t/missing-result-details-for-int64-and-datetime64-types-in-expectcolumnvaluestobeoftype/1925 "2024-10-01T11:34:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ankit](https://avatars.discourse-cdn.com/v4/letter/a/cab0a1/32.png) [@Ankit](https://discourse.greatexpectations.io/u/Ankit)\
**Post date:** [October 1, 2024, 11:34am UTC](https://discourse.greatexpectations.io/t/missing-result-details-for-int64-and-datetime64-types-in-expectcolumnvaluestobeoftype/1925/1 "2024-10-01T11:34:10Z")

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I’m loading a dataset into a pandas DataFrame and creating a batch. When running the `ExpectColumnValuesToBeOfType` expectation with the type `'int64'`, it only returns `success: true` without providing detailed result information. The same issue occurs when I use `'datetime64'` as the type. However, if I use `'str'`, the expectation returns the JSON results correctly. Why is this happening? I believe it is not running the validation and incorrectly returning success.

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**Author:** ![ToivoMattila](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.greatexpectations.io/toivomattila/32/254_2.png) [@ToivoMattila](https://discourse.greatexpectations.io/u/ToivoMattila)\
**Post date:** [October 9, 2024, 11:10am UTC](https://discourse.greatexpectations.io/t/missing-result-details-for-int64-and-datetime64-types-in-expectcolumnvaluestobeoftype/1925/2 "2024-10-09T11:10:26Z")

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What does the DataFrame that you are validating look like? Could you post couple rows as an example? The dtypes would also be useful.

Are you using the batch.validate or a Checkpoint to validate the data?  
Which [result format](https://docs.greatexpectations.io/docs/core/trigger_actions_based_on_results/choose_a_result_format/#define-a-result-format-configuration) are you using?

What would the output you are expecting look like? What result information would you like to have in addition to `success: true`?