jql | Easy JSON Query Processor with a Lispy syntax in Go | Frontend Framework library

I am using python to automate JIRA process, while doing I am unable to update Assignee and Comment fields.

While updating Assignee field, not getting any error, but the value is not updated properly, I am trying to assign from one user to other user, but it is getting updated as Unassigned

For comment field, getting an error.

Below is my code:

I'm using the Jira API with the following call: https://site.url/rest/api/2/search?jql=project=PROJECT&orderBy=Resolveddesc, however, it's not showing as per applied order by resolved desc. No static URL like - https://site.url/rest/api/2/search?%20Requests%22%20%20ORDER%20BY%20RESOLVED%20DESC

Also, I am looking to filter the following fields in RestAPI to improve the performance.

fields": ["summary","assignee","status"]

any help on this would be appreciated.

Problem:

We are looking to fetch number of issues closed over a certain duration and categorized by user and issue type (and may be more attributes in future).

Questions:

1. Does Jira JQL API support "Group By" clause?
2. If no, is there any other way to do this?
3. Slightly unrelated question - Does Jira API support GraphQL?

I'm trying to fetch all issues in JIRA for all projects. When doing the call one at a time, it works perfect. When trying to run it in a for loop I'm prompted with a 400 Client error.

The way that works:

I am trying to move and assign multiple issues from Jira using Jenkins

I am trying to implement a python code from the JIRA REST API examples:

https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-jql/#api-rest-api-3-jql-parse-post

My python code (which works as expected):

I have a query that returns the list of all epics

"Parent Link" = ABCD-28089 AND "Requested Version" = "Release 3.3.0" ORDER BY key ASC

this in JIRA evaluates correctly and returns the list of all epics.

Now I want to create another query using the ScriptRunner which needs to flatten and return all the stories under each of the epics returned by the above list

issueFunction in issuesInEpics("Parent Link" = ABCD-28089 AND "Requested Version" = "Release 3.3.0" ORDER BY key ASC)

But this complains with something like Error in the JQL Query: Expecting ')' or ',' but got '='. (line 1, character 46)

I am unable to understand the ScriptRunner semantics enough to build this query - Seems powerful but too difficult to figure out how to do.

Any pointers is appreciated.

I'm new to C#, REST API's and JSON stuff so please bear with me. I've searched hundreds of pages and am trying to figure out how this all works. For context, I'm pulling issues from JIRA REST API using a search like http://mylink.com/rest/api/2/search?jql=project%3DBULK and getting a list of issues. The JSON my program is pulling in is structured like below (this has been simplified from the actual JSON):

EDIT (04/04/2021): Updated JSON below with new use case.

Testing out using python to make a rest api call to pull defects/bugs from my jira instance. Using the code provided in the api_docs, I put together this query: