Join helpers for eager collections #496
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pikatchu
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Nov 12, 2024
This diff implements the 'join' operation of two collections.
It is assumed that:
- both collection values are objects (keys can be of any type)
- there never is more than 1 object on boths sides at any time
unless the option allowNN is passed (which should be rare).
If both those conditions are met, given a key, if the first collection
defines an object of type V1 and the second collection defines an
object V2 for the same key, the resulting collection will associate
{...V1, ...V2} for that key. No value is associated if either side is
missing.
pikatchu
added a commit
to pikatchu/skdb
that referenced
this issue
Nov 14, 2024
This diff implements the 'join' operation of two collections.
It is assumed that:
- both collection values are objects (keys can be of any type)
- there never is more than 1 object on boths sides at any time
unless the option allowNN is passed (which should be rare).
If both those conditions are met, given a key, if the first collection
defines an object of type V1 and the second collection defines an
object V2 for the same key, the resulting collection will associate
{...V1, ...V2} for that key. No value is associated if either side is
missing.
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this can be done with merge now, but it would be nice to provide helpers to do left/outer/inner/right joins on different collections
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