test: Add regression test for OR queries with mixed indexed/non-indexed fields #1193
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This test demonstrates a bug where using `or()` with one indexed field and one non-indexed field causes items matching the non-indexed condition to be silently dropped. Example: `or(eq(element.id, itemId), eq(element.group_id, itemId))` where 'id' has an index but 'group_id' does not. Expected: Items matching EITHER condition should be returned Actual: Only items matching the indexed condition are returned Root cause is in `packages/db/src/utils/index-optimization.ts`: - `canOptimizeOrExpression` returns true if ANY operand can be optimized - `optimizeOrExpression` only collects results from optimizable branches - Non-optimizable branches are silently dropped The fix should change OR optimization to require ALL branches be optimizable, falling back to full scan otherwise. https://claude.ai/code/session_01R16FFtQbQr1VXjEVCYAeUk
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Auto-indexing only recurses into AND expressions, not OR expressions. This means fields used inside OR don't get auto-indexed, which combined with the optimizer bug (dropping non-indexed OR branches), causes silent data loss in queries. This test demonstrates what SHOULD happen: auto-indexing should create indexes for all fields in OR expressions. https://claude.ai/code/session_01R16FFtQbQr1VXjEVCYAeUk
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🎯 Changes
Bug reported in https://discord.com/channels/719702312431386674/1465855364502126662/1465855364502126662
Added a regression test that demonstrates a bug in OR query handling when mixing indexed and non-indexed fields. The test documents the issue where items matching non-indexed field conditions are silently dropped when combined with indexed field conditions in an OR query.
Bug Description:
When using
or(eq(element.id, itemId), eq(element.group_id, itemId))whereidhas an index butgroup_iddoes not, only items matching the indexed condition are returned. Items matching the non-indexed condition are silently dropped.Expected Behavior:
Items matching EITHER condition should be returned. When not all OR branches can be optimized with indexes, the query should fall back to a full scan to ensure all matching items are found.
Test Details:
age=25 OR name='Bob'agefield has an index,namefield does notThis test will fail until the underlying bug is fixed in the query optimization logic.
✅ Checklist
pnpm test:pr.🚀 Release Impact
Note: This is a test-only change that documents an existing bug. No changeset is needed.
https://claude.ai/code/session_01R16FFtQbQr1VXjEVCYAeUk