# AQL for all specializations of an archetype

**Category:** [Technical (archive)](https://discourse.openehr.org/c/technical-archive/156)
**Created:** 2019-05-30 08:57 UTC
**Views:** 3
**Replies:** 4
**URL:** https://discourse.openehr.org/t/aql-for-all-specializations-of-an-archetype/14412

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## Post #1 by @system

Hi,
Does AQL allow defining containment so that the basic archetype and all it's specializations can be included in the query? f yes can somebody share the syntax?

regards

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## Post #2 by @system

It should do - something like this works on ThinkEhr. I'm not sure if other AQls support it

SELECT o FROM EHR e CONTAINS ACTION a[openEHR-EHR-ACTION.procedure.v1] CONTAINS OBSERVATION o[openEHR-EHR-CLUSTER.device-invasive*]

Ian

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## Post #3 by @system

Thanks Ian,

Can the wildcard(*) be used for different versions of the archetype also

regards

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## Post #4 by @system

I assume so, and possibly for specialisations. I would be a bit wary about using it for different major versions of an archetype since by definition at least some of the paths may have changed.

Ian

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## Post #5 by @system

thanks

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**Canonical:** https://discourse.openehr.org/t/aql-for-all-specializations-of-an-archetype/14412
**Original content:** https://discourse.openehr.org/t/aql-for-all-specializations-of-an-archetype/14412