# Can I use great expectations in checking the mapping of the columns?

**URL:** <https://discourse.greatexpectations.io/t/can-i-use-great-expectations-in-checking-the-mapping-of-the-columns/1819>\
**Category:** GX Core Support\
**Created:** [July 30, 2024, 3:34pm UTC](https://discourse.greatexpectations.io/t/can-i-use-great-expectations-in-checking-the-mapping-of-the-columns/1819 "2024-07-30T15:34:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pythonrobot](https://avatars.discourse-cdn.com/v4/letter/p/43a26b/32.png) [@pythonrobot](https://discourse.greatexpectations.io/u/pythonrobot)\
**Post date:** [July 30, 2024, 3:34pm UTC](https://discourse.greatexpectations.io/t/can-i-use-great-expectations-in-checking-the-mapping-of-the-columns/1819/1 "2024-07-30T15:34:22Z")

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The data engineer migrated the data but I need to check the mapping of the tables. Is it possible to do it with the help of this tool?

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**Author:** ![joshzheng](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.greatexpectations.io/joshzheng/32/191_2.png) [@joshzheng](https://discourse.greatexpectations.io/u/joshzheng)\
**Post date:** [July 30, 2024, 3:39pm UTC](https://discourse.greatexpectations.io/t/can-i-use-great-expectations-in-checking-the-mapping-of-the-columns/1819/2 "2024-07-30T15:39:53Z")

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Yeah we have a number of expectations in our gallery that might fit your need: [Great Expectations Gallery of Expectations and Packages](https://greatexpectations.io/expectations)

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**Author:** ![pythonrobot](https://avatars.discourse-cdn.com/v4/letter/p/43a26b/32.png) [@pythonrobot](https://discourse.greatexpectations.io/u/pythonrobot)\
**Post date:** [July 30, 2024, 5:53pm UTC](https://discourse.greatexpectations.io/t/can-i-use-great-expectations-in-checking-the-mapping-of-the-columns/1819/4 "2024-07-30T17:53:41Z")

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im pretty new to this, may i know any links of tutorials on how can i implement this? My boss wants me to automate ETL testing