[IMPALA-11350] Add virtual column FILE__POSITION

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.2.0
• Component/s: Backend, Frontend
• Labels: impala-iceberg
• Epic Link: Iceberg V2 format
• Epic Color: ghx-label-2
• Assignee: Zoltán Borók-Nagy
• Reporter: Zoltán Borók-Nagy
• Created: 13/Jun/22 14:44
• Updated: 19/Sep/22 11:23
• Resolved: 19/Sep/22 11:18

Description

Virtual column FILE__POSITION would return the ordinal position of the row in the data file.

It will be useful to add support for Iceberg's position-based delete files:

https://iceberg.apache.org/spec/#position-delete-files

Issue Links

• is duplicated by: IMPALA-11168 Add pseudo-columns for Impala