# AQL query with query_parameters and GET method

**Category:** [Platform](https://discourse.openehr.org/c/platform-implem/7)
**Created:** 2024-02-14 17:15 UTC
**Views:** 372
**Replies:** 7
**URL:** https://discourse.openehr.org/t/aql-query-with-query-parameters-and-get-method/4940

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## Post #1 by @surfer

Hello,
Let's consider a query like this one:
*select c/uid/value, e/ehr_id/value from EHR e contains COMPOSITION c where c/archetype_details/template_id/value = $tid*
with query_parameters={"tid":"template1"}
In EHRBase, it works with the POST method  but I can't get it to work with GET method. 
Anybody knows how to do it? is it even possible?

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## Post #2 by @birger.haarbrandt

Hi @surfer,

we will take a look at that

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## Post #3 by @surfer

thank you @birger.haarbrandt  :+1:

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## Post #4 by @surfer

@birger.haarbrandt any update on that? Still unable to run it with get method

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## Post #5 by @vidi42

@surfer  can you post the GET endpoint that you're trying to use?

I managed to get a response with

```
GET {{ehrbaseBaseUrl}}/rest/openehr/v1/query/aql?q=select%20c%2Fuid%2Fvalue,%20e%2Fehr_id%2Fvalue%20from%20EHR%20e%20contains%20COMPOSITION%20c%20where%20c%2Farchetype_details%2Ftemplate_id%2Fvalue%20%3D%20%24tid&query_parameters=tid%3Dtemplate1
```

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## Post #6 by @surfer

Hi @vidi42 ,
the endpoint is the same:
 {ehrbase_url}/rest/openehr/v1/query/aql

I mimic your query and **it works**, the difference being I previously created a json with query_parameters and  then passed it as "query_parameters={tid:tidvalue}"  instead of using "query_parameters=tid=tidvalue".

but what about *multiple query parameters*?
"query_parameters=tid=tidvalue,tid2=tid2value" does not work for me.  How do I express multiple parameters in the GET query request?

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## Post #7 by @vidi42

The query_parameters should look something like this `query_parameters=tid=tidvalue&tid2=tid2value` (see https://specifications.openehr.org/releases/ITS-REST/Release-1.0.3/query.html#tag/Query/operation/query_execute_adhoc_query)

Make sure the URL is properly encoded, but it should look like this
```
GET {{ehrbaseBaseUrl}}/rest/openehr/v1/query/aql?q=select%20c%2Fuid%2Fvalue,%20e%2Fehr_id%2Fvalue%20from%20EHR%20e%20contains%20COMPOSITION%20c%20where%20c%2Farchetype_details%2Ftemplate_id%2Fvalue%20%3D%20%24tid2&query_parameters=tid%tidvalue%26tid2%3Dtid2value
```

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## Post #8 by @surfer

that was it, thank you!

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**Canonical:** https://discourse.openehr.org/t/aql-query-with-query-parameters-and-get-method/4940
**Original content:** https://discourse.openehr.org/t/aql-query-with-query-parameters-and-get-method/4940