Querying an openEHR CDR with SQL, Cypher, and GraphQL? Yes, it’s possible.

We never tested whether the AQL provided by @siljelb can be transformed into SQL by hand. I learned there are two kinds of users: Those who know AQL and don’t want to learn SQL Those who know SQL and don’t want to learn AQL Who am I to decide which xQL is better. This is why I added AQL to my CDR.