Opened 10 years ago
Last modified 9 years ago
#23753 closed New feature
Provide a set of SQL functions — at Version 1
| Reported by: | Josh Smeaton | Owned by: | nobody |
|---|---|---|---|
| Component: | Database layer (models, ORM) | Version: | dev |
| Severity: | Release blocker | Keywords: | expressions |
| Cc: | 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 )
When #14030 lands there will be an easy way to implement SQL functions like LENGTH() and COALESCE(). There are several tickets requesting the implementation of certain functions, and this ticket aims to collate those requests, and extend the number of functions to a useable minimum subset. There was a discussion on the mailing list that calls out some implementation details as well as the set of functions to implement: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/django-developers/HggiPzwkono/SgXt4iNjTIYJ
List of functions:
- Coalesce
- ToLower/Lower
- ToUpper/Upper
- Length
- Case-When / IIF
- Substring
- As/Cast for casting the return value of a complex expression without defining the output_field of each sub-component)
This list isn't necessarily complete or final. If there are other functions that you'd like to see implemented in core, please comment, and I'll update the list above. Particular implementation details can be discussed on the PR or below once a PR is submitted. I'll aim to have these completed very soon after #14030 lands, and I expect these to be available in the same django version that incorporates 14030.
Linked tickets: