# Query on multiple indices and covariance using NEST 7.9+

**URL:** <https://discuss.elastic.co/t/query-on-multiple-indices-and-covariance-using-nest-7-9/261474>\
**Category:** Elasticsearch\
**Tags:** language-clients\
**Created:** [January 18, 2021, 9:09pm UTC](https://discuss.elastic.co/t/query-on-multiple-indices-and-covariance-using-nest-7-9/261474 "2021-01-18T21:09:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bramford](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bramford/32/82474_2.png) [@bramford](https://discuss.elastic.co/u/bramford)\
**Post date:** [January 18, 2021, 9:09pm UTC](https://discuss.elastic.co/t/query-on-multiple-indices-and-covariance-using-nest-7-9/261474/1 "2021-01-18T21:09:00Z")

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I'm attempting to search multiple indices using NEST while providing covariance in the same way this topic describes: [Query on multiple index using NEST](https://discuss.elastic.co/t/query-on-multiple-index-using-nest/185200)

Unfortunately the `.Type()` method no longer exists in the SearchDescriptor class (NEST v7.9+) .

How can I make use of covariance with multiple indices using NEST 7.9+'s fluent API?

Thanks,  
Bram

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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:** [February 15, 2021, 9:09pm UTC](https://discuss.elastic.co/t/query-on-multiple-indices-and-covariance-using-nest-7-9/261474/2 "2021-02-15T21:09:02Z")

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