I added "Custom indexes" to the ideas list at
https://code.djangoproject.com/wiki/SummerOfCode2016. Feel free to revise
the description or add yourself as a possible mentor.
On Sunday, February 7, 2016 at 6:26:38 AM UTC-5, Josh Smeaton wrote:
>
> There are many places that expressions can extend to, and I think indexes
> would make a really good candidate. There are a few things that need to
> happen to make this work though.
>
> - create meta.indexes to store { index_name: IndexType('field') }
> - internally translate any db_index=True to the appropriate key: val in
> above meta.indexes
> - internally translate index_together into meta.indexes
> - use compiler to generate the sql
> - ensure that migrations handle these new indexes properly
>
> I would also suggest that index names be queried to ensure we're not
> trying to use existing names. Not sure if migrations already do this, but I
> seem to remember something about not being able to track index names. Am I
> totally off base?
>
> This idea would actually make a really good GSoC (or similar..) project.
> Is there much interest from the community in custom indexes?
>
> On Sunday, 7 February 2016 22:11:59 UTC+11, Curtis Maloney wrote:
>>
>>
>> So, in #django recently there was a discussion about adding an index on
>> a date field for just the year.
>>
>> I know the idea was raised some time ago, and several ideas on the
>> syntax were expressed. But most of that focused on different types of
>> indices - not on indexing expressions.
>>
>> It occurred to me that with the recent advances in expression syntax, it
>> should be fairly easy to add an indexes list to Meta to define complex
>> expressions.
>>
>> Input?
>>
>> --
>> C
>>
>
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