# Elasticsearch如何进行跨库查询

**URL:** <https://discuss.elastic.co/t/elasticsearch/197446>\
**Category:** Elasticsearch\
**Created:** [August 30, 2019, 6:11am UTC](https://discuss.elastic.co/t/elasticsearch/197446 "2019-08-30T06:11:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![wwl1](https://avatars.discourse-cdn.com/v4/letter/w/0ea827/32.png) [@wwl1](https://discuss.elastic.co/u/wwl1)\
**Post date:** [August 30, 2019, 6:11am UTC](https://discuss.elastic.co/t/elasticsearch/197446/1 "2019-08-30T06:11:46Z")

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在elasticsearch中如何才能进行跨库查询，希望大佬们能指点迷津，谢谢。

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**Author:** ![wangqinghuan](https://avatars.discourse-cdn.com/v4/letter/w/d26b3c/32.png) [@wangqinghuan](https://discuss.elastic.co/u/wangqinghuan)\
**Post date:** [August 31, 2019, 5:53am UTC](https://discuss.elastic.co/t/elasticsearch/197446/2 "2019-08-31T05:53:53Z")

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你说的跨库是如果是跨索引，使用index1,index2/\_search就可以跨索引查询  
如果是跨集群，Es也提供了cross cluster来进行跨集群查询

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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:** [September 28, 2019, 6:01am UTC](https://discuss.elastic.co/t/elasticsearch/197446/3 "2019-09-28T06:01:54Z")

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