# Does a field need to be indexed to filter / facet on it? **URL:** \ **Category:** Elasticsearch\ **Created:** [February 13, 2013, 5:25pm UTC](https://discuss.elastic.co/t/does-a-field-need-to-be-indexed-to-filter-facet-on-it/10729 "2013-02-13T17:25:58Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![tbrianjones](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tbrianjones/32/1402_2.png) [@tbrianjones](https://discuss.elastic.co/u/tbrianjones)\ **Post date:** [February 13, 2013, 5:25pm UTC](https://discuss.elastic.co/t/does-a-field-need-to-be-indexed-to-filter-facet-on-it/10729/1 "2013-02-13T17:25:58Z")
I'd like to filter / facet on a text field that contains a code ( eg. abc, ab3, abz ... ). Do I need to set this field to { "index" : "analyzed" } ( or more appropriately { "index" : "not\_analyzed" } since i'll want to filter on the exact string. )??? What about other field types ... numeric, dates, etc. Filters seems to work fine on my development dataset ( hundreds of thousands of docs ) when they aren't indexed, but I've yet to test a large dataaset ( hundreds of millions of docs ). I feel silly asking this question, but my other database experiences aren't mapping to ES as I don't have a good handle on the underlying technology yet. : ) -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![mattweber](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mattweber/32/44940_2.png) [@mattweber](https://discuss.elastic.co/u/mattweber)\ **Post date:** [February 13, 2013, 5:44pm UTC](https://discuss.elastic.co/t/does-a-field-need-to-be-indexed-to-filter-facet-on-it/10729/2 "2013-02-13T17:44:53Z")
You are correct, if you want to filter on the exact value of a string field you should set it to "not\_analyzed". This is only needed on string fields due to tokenization of the string during indexing when not set. On Wed, Feb 13, 2013 at 9:25 AM, Brian Jones [tbrianjones@gmail.com](mailto:tbrianjones@gmail.com) wrote: > I'd like to filter / facet on a text field that contains a code ( eg. abc, > ab3, abz ... ). Do I need to set this field to { "index" : "analyzed" } ( > or more appropriately { "index" : "not\_analyzed" } since i'll want to filter > on the exact string. )??? What about other field types ... numeric, dates, > etc. > > Filters seems to work fine on my development dataset ( hundreds of thousands > of docs ) when they aren't indexed, but I've yet to test a large dataaset ( > hundreds of millions of docs ). > > I feel silly asking this question, but my other database experiences aren't > mapping to ES as I don't have a good handle on the underlying technology > yet. > > : ) > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:51am UTC](https://discuss.elastic.co/t/does-a-field-need-to-be-indexed-to-filter-facet-on-it/10729/3 "2017-07-06T02:51:35Z")