Add conditional_result_owners: set test result owners from failing rows

[joostboon]

Why

Owners can only be set on the asset or the test, so every failure of a test goes to the same owners. For multi-tenant or multi-region tables (one row set per country, region or business unit), a single dimension anomaly test should be able to send each failing dimension value to its own owner, instead of needing a separate test per value.

This change lets the test result row carry owners resolved from the rows that failed.

Config

- elementary.dimension_anomalies:
    dimensions: [country]
    config:
      meta:
        conditional_result_owners:
          - condition: "dimension_value = 'JAPAN'"
            owners: ["japan-team@example.com"]
          - column: country
            values: [KOREA, TAIWAN]
            owners: "korea-team@example.com, taiwan-team@example.com"

There are two kinds of rules:

• A condition is SQL evaluated against the test's failing rows (the columns the test returns, for example value_field for accepted_values, or dimension_value for dimension anomalies, with multi-column dimensions joined by "; "). It errors the test when the rows don't have a column it uses, so it's meant for the tests it was written for.

• A column rule names a column of the tested model and the values to match. For dimension anomalies it's matched against that dimension (also within a multi-column dimension). For other tests it's matched against that column of the failing rows, and it's skipped when the test doesn't return that column. That makes column rules safe to set for many tests at once, for example on a folder.

• If any rule matches, owners on the elementary_test_results row holds only the owners of every matching rule, sorted, replacing the default (asset) owners.

• If none matches, or the test passes, the row keeps its default owners (today's behaviour).

• owners accepts a string, a comma-separated string, or a list.

• No schema change: owners already exists on the result row. edr alerts already add the model and test meta owners on top of it.

Where it runs

• dbt tests: only when the test fails or warns, against the rows the test SQL returns (needs the Elementary test materialization, the default). This re-runs the test SQL once, plus one limit 1 query on the failing rows to read the returned column names, in their actual case, when there are column rules.
• Anomaly tests: only when there are anomalies. Conditions run in one query over the anomalous rows grouped by full_table_name, column_name and metric_name (adds a group_by option to get_read_anomaly_scores_query), built with select_override so it stays one CTE chain. Column rules are matched in the macro against the anomalous rows already read, so they add no query.
• Schema change tests: not supported; a warning is logged if the config is set.

Validation and limits

• The config is validated on every run: each item needs owners, and either a string condition or a column with values, and at most 1500 conditions per test (stays under per-query column limits such as Postgres 1664). Mistakes fail at compile time.
• A condition with invalid SQL makes that test error (macros can't catch query errors). The conditions query starts with a comment naming the test, to make it easy to find.

Tests

integration_tests/tests/test_conditional_result_owners.py: union of matching conditions, no match, passing test, sorted owners, warn status, too many conditions, dimension anomalies (single value, partial match, multi-column dimension), column anomalies per metric, volume anomalies; column rules on a dimension, on one part of a multi-column dimension, on a returned column (case-insensitive), skipped when the test doesn't return the column, and an item with both condition and column erroring.

🤖 Generated with Claude Code

[github-actions]

👋 @joostboon
Thank you for raising your pull request.
Please make sure to add tests and document all user-facing changes.
You can do this by editing the docs files in the elementary repository.

[coderabbitai]

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• macros/edr/materializations/test/result_owners.sql

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📝 Walkthrough

The pull request adds configurable result-owner rules for dbt tests and anomaly tests. Matching rules contribute normalized, deduplicated owners to failed test results. Passing tests and tests without matching rules retain their existing owners.

Changes: Result-owner assignment

Layer / File(s)	Summary
Rule validation and owner resolution macros/edr/materializations/test/result_owners.sql	Macros validate configured rules, normalize owner values, build match queries, and resolve owners for failed dbt tests.
dbt test result updates and coverage macros/edr/materializations/test/test.sql, integration_tests/tests/test_result_owners.py	The dbt test materialization updates a result row when rule resolution returns owners. Integration tests cover matched owners, unmatched rules, and passing tests.
Anomaly test result updates and coverage macros/edr/materializations/test/result_owners.sql, macros/edr/data_monitoring/anomaly_detection/store_anomaly_test_results.sql, integration_tests/tests/test_result_owners.py	Anomaly rules match anomalous rows by table, metric, and optional column. The anomaly result stores returned owners when the list is non-empty. An integration test checks owner selection for a Superman anomaly.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant handle_dbt_test
  participant get_dbt_test_result_owners
  participant get_matched_result_owners
  participant cached_test_result_row
  handle_dbt_test->>get_dbt_test_result_owners: Resolve owners for the flattened test
  get_dbt_test_result_owners->>get_matched_result_owners: Match rules against failing test rows
  get_matched_result_owners-->>get_dbt_test_result_owners: Return deduplicated matching owners
  get_dbt_test_result_owners-->>handle_dbt_test: Return owners or none
  handle_dbt_test->>cached_test_result_row: Set owners when the returned list is non-empty

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Merge Risk: ⚪ Minimal · up to 7f6d0

The change adds result-owner routing for failing tests. No concrete merge-blocking issue was identified in the supplied context. The author reports passing integration tests on Postgres only, so other warehouses are untested.

Pre-merge checks · 3 · 2

Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 1 files. (1 skipped: 1…	Write docstrings for the functions missing them to satisfy the coverage threshold.
Title check		The title describes routing test result owners from failing rows, which is the main change. However, it names conditional_result_owners, while the implemented configuration is result_owners.	Rename conditional_result_owners to result_owners in the title. For example: Add result_owners: set test result owners from failing rows.

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Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.

Full details: Docstring Coverage

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Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 13 functions across 1 files. (1 skipped: 1 unsupported.)

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[MikaKerman]

A few general points:

• Supported tests: the hook covers non-Elementary dbt tests and the four anomaly tests. schema_changes, exposure_schema_validity and a few other paths never read the config, so a result_owners there is silently ignored. Worth a warning, or a line in the docs listing what's supported.
• Docs: for dbt tests the expressions run against the columns the test SQL returns (for example value_field for accepted_values), not the source table's columns, and for dimension anomalies the column is dimension_value (multi-column dimensions joined with ; ). That needs examples in the docs.
• More test coverage: an invalid expression, a multi-column dimension, the column and table anomaly paths (they use metric_name and column_name in the group filter), a warn status, and a partial match in the anomaly path.

Heads up: there are still some open questions in the design (naming, how owners should behave on the dbt result versus the Cloud incident, error fallback for bad expressions) that we're discussing separately. They may affect the implementation, so I'll follow up once they're settled.

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Actionable comments posted: 1

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Inline comments:
Review comments at @macros/edr/materializations/test/result_owners.sql:
- Around line 112-120: Update get_anomaly_result_owners_group_key to return a
tuple of the full table name, column name, and metric name instead of
concatenating uppercased values; preserve the original identifier casing so
distinct quoted columns such as Foo and FOO remain separate keys.

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• integration_tests/tests/test_result_owners.py
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• macros/edr/materializations/test/test.sql
• macros/edr/tests/test_utils/get_anomaly_query.sql

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