Opened 6 years ago
Last modified 2 days ago
#29850 closed New feature
Add window support for RowRange frames — at Version 10
| Reported by: | Daniel Fuchs | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | dev |
| Severity: | Normal | Keywords: | GSoC |
| Cc: | Raphael Michel, Mads Jensen, John Speno | Triage Stage: | Ready for checkin |
| Has patch: | yes | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description (last modified by )
The current RowRange frame is missing handling for several cases.
None of the following are currently supported:
RowRange(start=-2, end=-1)
ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING
RowRange(start=1, end=2)
ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING
It's also missing support for EXCLUDE.
ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING EXCLUDE CURRENT ROW
Frame exclusion is supported in PostgreSQL 11+, SQLite 3.28+, and Oracle 21c+ other databases do not support exclusion (MariaDB doc, and MySQL doc).
Change History (8)
comment:1 by , 6 years ago
| Summary: | Poor Window Support for RowRange Frames → Add window support for RowRange frames |
|---|---|
| Triage Stage: | Unreviewed → Accepted |
| Type: | Uncategorized → New feature |
comment:3 by , 6 years ago
| Description: | modified (diff) |
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| Version: | 2.1 → master |
comment:5 by , 5 years ago
| Description: | modified (diff) |
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comment:6 by , 4 years ago
| Keywords: | GSoC added |
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comment:7 by , 4 years ago
Is it a good idea to add an argument named as exclude in WindowFrame class in django.db.models.expressions? This argument will contain the F() value of the row/range to be excluded.
comment:8 by , 3 years ago
| Cc: | added |
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comment:9 by , 2 years ago
| Cc: | added |
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comment:10 by , 23 months ago
| Description: | modified (diff) |
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Exclusion is supported also on SQLite 3.28+ (see release notes).