# \#aggregate-function

**URL:** https://community.synatic.com/tag/aggregate-function/40.md

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## [How to use the Rollup mapper (with Sort)](https://community.synatic.com/t/how-to-use-the-rollup-mapper-with-sort/81)

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**Author:** [@shaun](https://community.synatic.com/u/shaun)\
**Replies:** 0\
**Last updated:** [March 12, 2021, 12:23pm UTC](https://community.synatic.com/t/how-to-use-the-rollup-mapper-with-sort/81 "2021-03-12T12:23:16Z")

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The Rollup mapper step allows you to rollup fields within your data set. The rollup operations available are: 1. Sum 2. Average 3. First 4. Last 5. Min 6. Max 7. Count If you are familiar with transact SQL (T-SQL…