Fix Power BI scheduled refresh failures for Governance and WorkloadOptimization #1937
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…timization (#1878) Two bugs were causing scheduled refresh to fail when Resource Graph queries returned no data: 1. PolicyDefinitions NullHandling was missing the subscriptionId column that the query projects, causing a schema mismatch 2. Subscriptions query returned Source instead of NullHandling, so the empty table fallback was never used 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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The Subscriptions, AdvisorRecommendations, and AdvisorReservationRecommendations tables all define a type column but were missing it in the NullHandling empty table schema. This causes schema validation failures when Resource Graph returns no data. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
RolandKrummenacher
approved these changes
Jan 13, 2026
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@all-contributors please add @flanakin for code |
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@microsoft-github-policy-service[bot] @flanakin already contributed before to code |
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Summary
subscriptionIdcolumn that the query projectsSourceinstead ofNullHandling, so the empty table fallback was never usedRoot Cause
When Resource Graph queries return no data, Power BI creates an empty result. The NullHandling logic is supposed to create a properly-typed empty table with the correct schema. However:
subscriptionIdbut NullHandling didn't include it)Sourceinstead)This caused schema validation errors during scheduled refresh in Power BI Service.
Test plan
Closes #1878
🤖 Generated with Claude Code