paul-rogers opened a new pull request #1974: DRILL-7574: Generalize the projection parser URL: https://github.com/apache/drill/pull/1974 Adds support for multi-dimensional arrays, and columns projected as both an array and a map. ## Description EVF contains a bit of code called the"projection parser": it takes a projection list and converts it into a form useful for scan projection. The prior version handled single-level arrays, such as needed for the `columns` column in the text reader. For JSON, we must handle arbitrary column structures such as: ``` a, a.b, a[1], a[1][2], a.[1][2].b ``` The revised version is more forgiving; it just describes what appears in the projection list without trying to enforce semantic rules like the previous version did. Modified consumers of the projection parser to reflect the changes. ## Documentation This feature is not user-visible. ## Testing Added new unit tests, revised existing unit tests. Reran all unit tests.
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
