# Purpose of TSVB Aggregation feature under Options tab for TSVB table

**URL:** <https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854>\
**Category:** Kibana\
**Created:** [February 10, 2021, 11:04am UTC](https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854 "2021-02-10T11:04:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![BitBucketUser\_user](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bitbucketuser_user/32/79679_2.png) [@BitBucketUser\_user](https://discuss.elastic.co/u/BitBucketUser_user)\
**Post date:** [February 10, 2021, 11:04am UTC](https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854/1 "2021-02-10T11:04:48Z")

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Hello All,  
In the TSVB panel for **Table** , I can find choices to aggregate under two different places..

1. Under the metrics tab  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/1/31b2f912d2a86b6e4a97e63ee78707ba37cd310d.png)
2. Under the options tab  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/c/f/cf5fa65467791a61a1ce39df8caee90eb098c650.png)  
There is some special reason/ use of having two aggregation choices here ?

Thanks

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**Author:** ![wylie](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wylie/32/81794_2.png) [@wylie](https://discuss.elastic.co/u/wylie)\
**Post date:** [February 10, 2021, 3:45pm UTC](https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854/2 "2021-02-10T15:45:56Z")

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I'm one of the engineers who works on these products and I didn't even know about option 2. Option 1 is the only way to select metrics in TSVB, and it looks like option 2 is just broken.

What I can tell you is that Option 2 is implementing the "Series agg" function of TSVB, which lets you apply a **second level of aggregation** on the existing data. So for example, if you have "Sum of downloaded for each of the top 100 host names" you can then apply a second level of aggregation display this as a single number, instead of 100 separate numbers.

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<div class="post-metadata">

**Author:** ![BitBucketUser\_user](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bitbucketuser_user/32/79679_2.png) [@BitBucketUser\_user](https://discuss.elastic.co/u/BitBucketUser_user)\
**Post date:** [February 11, 2021, 9:56am UTC](https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854/3 "2021-02-11T09:56:45Z")

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Thanks for the clarification 😀

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 11, 2021, 9:57am UTC](https://discuss.elastic.co/t/purpose-of-tsvb-aggregation-feature-under-options-tab-for-tsvb-table/263854/4 "2021-03-11T09:57:03Z")

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