It's pronounced Diane. I do data architecture, operations, and backend development. In my spare time I maintain Massive.js, a data mapper for Node.js and PostgreSQL.
"You/your colleagues mentioned you want/would have wanted more training with Postgres. Could you go into more detail on what you've struggled with, what concepts or aspects of working with Postgres you've found unintuitive, and where you think a slightly-more-formal crash course would have helped you?"
And then you let them talk, ask followup questions to get as much detail as you can, write it down, and see what patterns emerge.
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"You/your colleagues mentioned you want/would have wanted more training with Postgres. Could you go into more detail on what you've struggled with, what concepts or aspects of working with Postgres you've found unintuitive, and where you think a slightly-more-formal crash course would have helped you?"
And then you let them talk, ask followup questions to get as much detail as you can, write it down, and see what patterns emerge.