# Query database from a filter

**URL:** <https://discuss.elastic.co/t/query-database-from-a-filter/50367>\
**Category:** Logstash\
**Created:** [May 18, 2016, 7:15pm UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367 "2016-05-18T19:15:21Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![wmikew5672](https://avatars.discourse-cdn.com/v4/letter/w/58956e/32.png) [@wmikew5672](https://discuss.elastic.co/u/wmikew5672)\
**Post date:** [May 18, 2016, 7:15pm UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/1 "2016-05-18T19:15:21Z")

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I'm just new to Elasticsearch, and I'm looking to find a way to get info from a database, based on a value stored in an index tab. I've looked at the jdbc input plugin, however I'd like to do it within a condition in a filter. Do I need to create a separate python script, or can it be done within Logstash?

Any help would be greatly appreciated.

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [May 18, 2016, 8:38pm UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/2 "2016-05-18T20:38:46Z")

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Perhaps you can use the translate filter to look up values against a static file (that could be generated periodically from a database)?

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**Author:** ![wmikew5672](https://avatars.discourse-cdn.com/v4/letter/w/58956e/32.png) [@wmikew5672](https://discuss.elastic.co/u/wmikew5672)\
**Post date:** [May 18, 2016, 11:43pm UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/3 "2016-05-18T23:43:49Z")

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That sounds like a great idea, but I just want to make sure I understand. Should I query the database separately, outside of logstash, create a file, then just 'query' the file via translate?

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**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [May 19, 2016, 5:31am UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/4 "2016-05-19T05:31:09Z")

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Yes, exactly.

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**Author:** ![wmikew5672](https://avatars.discourse-cdn.com/v4/letter/w/58956e/32.png) [@wmikew5672](https://discuss.elastic.co/u/wmikew5672)\
**Post date:** [May 19, 2016, 11:04am UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/5 "2016-05-19T11:04:08Z")

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Great, thanks!

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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 6, 2017, 4:56am UTC](https://discuss.elastic.co/t/query-database-from-a-filter/50367/6 "2017-07-06T04:56:58Z")

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