# Must or filter in bool query when size = 0

**URL:** https://discuss.elastic.co/t/must-or-filter-in-bool-query-when-size-0/35831
**Category:** Elasticsearch
**Created:** [November 29, 2015, 2:09pm UTC](https://discuss.elastic.co/t/must-or-filter-in-bool-query-when-size-0/35831 "2015-11-29T14:09:30Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Maxim\_Valyanskiy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/maxim_valyanskiy/32/787_2.png) [@Maxim\_Valyanskiy](https://discuss.elastic.co/u/Maxim_Valyanskiy)
#### Post date: [November 29, 2015, 2:09pm UTC](https://discuss.elastic.co/t/must-or-filter-in-bool-query-when-size-0/35831/1 "2015-11-29T14:09:31Z")

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I want to run analytics query that has only few filters, and I do not need hits / scoring (size=0). I used filteredQuery in Elasticsearch 1.x. I'm replacing filteredQuery with bool query; should I put my filters in "filter" or in "must" clause? Is there any performance difference? What it the preferred way?

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 11:35pm UTC](https://discuss.elastic.co/t/must-or-filter-in-bool-query-when-size-0/35831/2 "2017-07-05T23:35:04Z")

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