# How to add Sequential numbering to existing integer

**URL:** <https://community.parabola.io/t/how-to-add-sequential-numbering-to-existing-integer/2764>\
**Category:** Ask a question\
**Created:** [July 7, 2023, 2:14pm UTC](https://community.parabola.io/t/how-to-add-sequential-numbering-to-existing-integer/2764 "2023-07-07T14:14:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Julian\_Partridge](https://avatars.discourse-cdn.com/v4/letter/j/d6d6ee/32.png) [@Julian\_Partridge](https://community.parabola.io/u/Julian_Partridge)\
**Post date:** [July 7, 2023, 2:14pm UTC](https://community.parabola.io/t/how-to-add-sequential-numbering-to-existing-integer/2764/1 "2023-07-07T14:14:53Z")

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I have a column that contains duplicate numbers:

100  
100  
100

I need to create

100-1  
100-2  
100-3

Any help would be appreciated

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**Author:** ![Emory\_Stainbrook](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/emory_stainbrook/32/1772_2.png) [@Emory\_Stainbrook](https://community.parabola.io/u/Emory_Stainbrook)\
**Post date:** [July 7, 2023, 4:59pm UTC](https://community.parabola.io/t/how-to-add-sequential-numbering-to-existing-integer/2764/2 "2023-07-07T16:59:57Z")

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Hi @Julian_Partridge - Happy to help! You can use an [Add row numbers](https://parabola.io/transform/insert-row-numbers) step and have the numbering be depending on the column with the duplicate numbers.

From there, you can use a [Merge columns](https://parabola.io/transform/combine-columns) step to combine those columns to create the 100-1 formatting that you want for those numbers.

Let me know if you have any questions!

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**Author:** ![Julian\_Partridge](https://avatars.discourse-cdn.com/v4/letter/j/d6d6ee/32.png) [@Julian\_Partridge](https://community.parabola.io/u/Julian_Partridge)\
**Post date:** [July 7, 2023, 7:40pm UTC](https://community.parabola.io/t/how-to-add-sequential-numbering-to-existing-integer/2764/3 "2023-07-07T19:40:38Z")

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Thank you that worked perfectly!