wmoustafa commented on code in PR #7500: URL: https://github.com/apache/iceberg/pull/7500#discussion_r1193231849
########## format/view-spec.md: ########## @@ -98,7 +98,11 @@ View definitions can be represented in multiple ways. Representations are docume A view version can have more than one representation. All representations for a version must express the same underlying definition. Engines are free to choose the representation to use. -Each representation is an object with at least one common field, `type`, that is one of the following: +View versions are immutable. Once a version is created, it cannot be changed. This means that representations for a version cannot be changed. If a view definition changes (or new representations are to be added), a new version must be created. + +A representation is identified by its `type` and `dialect`. A view version can have multiple representations (i.e., different `type` and `dialect` combinations), but at most one representation for a given `type` and `dialect` pair. Review Comment: I have assumed that the `dialect` field is common to all representations, and its value would be something like `NONE`. Given that different types could be represented by different fields/schemss in the spec, I have moved this part of the spec to the `SQL` type section. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
