# \#query

**URL:** https://discourse.geta12.com/tag/query/46.md

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## [A12 relationship extensions](https://discourse.geta12.com/t/a12-relationship-extensions/2499)

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**Author:** [@julian-typed-spruce](https://discourse.geta12.com/u/julian-typed-spruce)\
**Replies:** 3\
**Last updated:** [April 2, 2025, 7:30am UTC](https://discourse.geta12.com/t/a12-relationship-extensions/2499 "2025-04-02T07:30:09Z")

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Hi all, i have some A12 relationship topics i would like to discuss together. There is demand in the cosmo project to have them so i would like to discuss which option we have to build them. In general they are about …

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## [Run a custom solr query in a bap backend?](https://discourse.geta12.com/t/run-a-custom-solr-query-in-a-bap-backend/436)

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**Author:** [@stephen-warm-graph](https://discourse.geta12.com/u/stephen-warm-graph)\
**Replies:** 2\
**Last updated:** [May 27, 2021, 2:17pm UTC](https://discourse.geta12.com/t/run-a-custom-solr-query-in-a-bap-backend/436 "2021-05-27T14:17:37Z")

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We have some custom REST endpoints in our bap backend. To implement some logic in the backend I’d like to: Query documents of a certain model with a specific value in fieldA and return only the value of a fieldB (rathe…