# Difference in results when executing expectations on same data from CSV and Athena datasources

**URL:** <https://discourse.greatexpectations.io/t/difference-in-results-when-executing-expectations-on-same-data-from-csv-and-athena-datasources/834>\
**Category:** Archive\
**Tags:** help-wanted\
**Created:** [July 21, 2021, 2:04pm UTC](https://discourse.greatexpectations.io/t/difference-in-results-when-executing-expectations-on-same-data-from-csv-and-athena-datasources/834 "2021-07-21T14:04:24Z")\
**Posts on this page:** 1\
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**Author:** ![vaidehid](https://avatars.discourse-cdn.com/v4/letter/v/0ea827/32.png) [@vaidehid](https://discourse.greatexpectations.io/u/vaidehid)\
**Post date:** [July 21, 2021, 2:04pm UTC](https://discourse.greatexpectations.io/t/difference-in-results-when-executing-expectations-on-same-data-from-csv-and-athena-datasources/834/1 "2021-07-21T14:04:24Z")

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Hi,

I have a table data with different types of columns (datetime, varchar, integer). When I execute expectation expect\_table\_columns\_to\_match\_set against same data from CSV I get complete list of 6 unexpected values. But when I execute same expectation against same data from Athena datasource I get only 2 out of 6 unexpected values in the result set.  
Can you please help me in knowing why does this happen with AWS Athena datasources?

Thanks