# How to do elasticsearch data comparison
**URL:** https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061
**Category:** Elasticsearch
**Created:** [November 9, 2017, 3:49pm UTC](https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061 "2017-11-09T15:49:03Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@varun1992](https://discuss.elastic.co/u/varun1992)
#### Post date: [November 9, 2017, 3:49pm UTC](https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061/1 "2017-11-09T15:49:03Z")
Sir,
I have index named security, where i indexed a website log.
I need to create a query for calculating how many people connected to site this month and last month, then compare the count .
Is there a way to do compare 2 months data in query ??
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### Author:  [@mujtabahussain](https://discuss.elastic.co/u/mujtabahussain)
#### Post date: [November 9, 2017, 11:45pm UTC](https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061/2 "2017-11-09T23:45:48Z")
Hey!
I am sure there is! But first a few questions.
1. Whats the index look like?
2. What have you tried so far?
3. Which docs have you looked at?
🙂
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### Author:  [@varun1992](https://discuss.elastic.co/u/varun1992)
#### Post date: [November 14, 2017, 3:09pm UTC](https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061/3 "2017-11-14T15:09:49Z")
I have 2 log index. one for the traffic and other for error listing.
I need to create a new index by combining some fields of both indices.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 12, 2017, 3:10pm UTC](https://discuss.elastic.co/t/how-to-do-elasticsearch-data-comparison/107061/4 "2017-12-12T15:10:11Z")
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