# How to query for all devices inside a group **URL:** \ **Category:** Forum\ **Tags:** cumulocity\ **Created:** [February 28, 2023, 7:10am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117 "2023-02-28T07:10:03Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Bishan\_T\_Prasad](https://avatars.discourse-cdn.com/v4/letter/b/3ab097/32.png) [@Bishan\_T\_Prasad](https://community.cumulocity.com/u/Bishan_T_Prasad)\ **Post date:** [February 28, 2023, 7:10am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/1 "2023-02-28T07:10:03Z")
Hi All, We have created hierarchical structure of assets and device with 1+ levels of hierarchy. For eg: Subsystem - group IAQ - subgroup device 1 - device subgroup2 - subgroup device 2 - device So with the above structure if i have to retrieve all the devices within the Subsystem group, is there any way i can retrieve all the devices in one call? Currently, im getting the getting the child assets of the group and checking if the type is device or group. if it is group then i’m querying it again to get all the child assets which is a inefficient way to get all devices. So please advice me how can i get the result in an efficient way. ---
**Author:** ![Marco\_Stoffel](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/marco_stoffel/32/19453_2.png) [@Marco\_Stoffel](https://community.cumulocity.com/u/Marco_Stoffel)\ **Post date:** [February 28, 2023, 9:48am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/2 "2023-02-28T09:48:38Z")
Hi, sorry, I don’t think there is another way. This should be implemented in the backend though… Regards, Marco ---
**Author:** ![Christian\_Guether1](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/christian_guether1/32/14848_2.png) [@Christian\_Guether1](https://community.cumulocity.com/u/Christian_Guether1)\ **Post date:** [February 28, 2023, 9:57am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/3 "2023-02-28T09:57:26Z")
Hi, I think you will need to use `bygroupid()` and the query language as described [here](https://cumulocity.com/api/core/#section/Supported-functions) to construct your query to get all devices in one single query. Best regards Christian ---
**Author:** ![Bishan\_T\_Prasad](https://avatars.discourse-cdn.com/v4/letter/b/3ab097/32.png) [@Bishan\_T\_Prasad](https://community.cumulocity.com/u/Bishan_T_Prasad)\ **Post date:** [February 28, 2023, 10:35am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/5 "2023-02-28T10:35:52Z")
Hi Christian, Thanks for the response. If I have to make use of bygroupid() then I should know all the subgroup ids in prior right? ---
**Author:** ![Christian\_Guether1](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/christian_guether1/32/14848_2.png) [@Christian\_Guether1](https://community.cumulocity.com/u/Christian_Guether1)\ **Post date:** [February 28, 2023, 10:37am UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/6 "2023-02-28T10:37:41Z")
Yes, you would need to know the underlying subgroups and their ids. ---
**Author:** ![Bishan\_T\_Prasad](https://avatars.discourse-cdn.com/v4/letter/b/3ab097/32.png) [@Bishan\_T\_Prasad](https://community.cumulocity.com/u/Bishan_T_Prasad)\ **Post date:** [February 28, 2023, 1:09pm UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/7 "2023-02-28T13:09:34Z")
Ok. Got it. thanks ![~WRD0000.jpg](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/5/2/52d5f1c08649212fe6768d2cacdcf8df711810d9.jpeg) ![image001.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/a/8/a87b6b11fc928737ad2dbd12da3a006a3a205d55.png) ![image002.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/c/f/cf1b917ed7c6f7002675b6d2085708ab46bd3863.png) ![image003.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/6/5/65744658a72aed06e95d96a2113499f4669f0265.png) ![image005.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/2/3/23ca7d938b07ded9a33c446728fea44b516d299c.png) ![image006.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/d/5/d55f312a337c351dd5f393b63ad636a866718307.png) ![image007.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/7/5/759d5313a8df46b009ec4b45704aa3d86dc870a8.png) ![image008.jpg](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/optimized/2X/d/d969ada2aef25ab0d07ed5d54e61cbbc18ff288a_2_690x85.jpeg) ![image004.png](https://europe1.discourse-cdn.com/flex005/uploads/cumulocity/original/3X/6/0/6057172a7934415d5df4e1764199d3ba3e1d9e68.png) ---
**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/system/32/31990_2.png) [@system](https://community.cumulocity.com/u/system)\ **Post date:** [August 27, 2023, 1:10pm UTC](https://community.cumulocity.com/t/how-to-query-for-all-devices-inside-a-group/7117/8 "2023-08-27T13:10:24Z")
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