test: cover bulk upsert dropping records when select excludes identity keys - #809
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marcnnn wants to merge 1 commit into
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test: cover bulk upsert dropping records when select excludes identity keys#809marcnnn wants to merge 1 commit into
marcnnn wants to merge 1 commit into
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…y keys
A bulk upsert pairs each returned row back up with its changeset by the upsert
identity's keys, but the `RETURNING` list is built from the action's
`action_select` alone. When the select doesn't include those keys, every row
reads back with `nil` for each one, nothing correlates, and every record is
dropped from the result - while the rows are still written. The caller sees
`%Ash.BulkResult{status: :success, errors: [], records: []}` for a batch that
inserted or updated fine.
These two tests currently FAIL on main. They are untagged, so they cover both
the `INSERT ... ON CONFLICT` path and the PostgreSQL 17+ `MERGE` path.
`:upsert_with_no_filter` is used because it declares no changes and no
notifiers, which makes its `action_select` just the primary key - an explicit
`select` therefore can't widen it to include the identity key.
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On upsert the columns that need to be selected to match the updated rows with the rows from the database are not selected anymore so upsert result is empty even if the data is written into the db.
This is a regression that is related to #786 and #638
In my case, an upsert_identity with unique_index defines the upsert semantic already, so the select was left out and is filled by the upsert reactor with the empty list. But the unique index is constructed with two fields not only one like the test, i can add this as well?
My dependabot branch for the ash_postgres update from 2.10.0 to 2.11.0 failed CI
The tests reproduce a simplified version of the problem.
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