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QUERY_E_INVALIDSCOPE_COALESCE
QUERY_E_INVALIDSCOPE_COALESCE is a structural query-composition error. Each component of the coalesced query must operate over the same scope; mixing components that search different roots or catalogs makes the combined relevance result unsupported.
Normalize scope before combining query components
- Log the effective scope restriction for every component after helper APIs expand it into SQL.
- Compare machine/catalog selection and folder-depth predicates as well as user-visible path text.
- If separate scopes are intentional, execute separate queries and merge results in application logic rather than forcing an unsupported coalesce form.
Windows Search separates the FROM catalog target from WHERE folder-depth restrictions that can narrow scope. Two queries that look similar in UI can therefore have different effective scopes. The error should be fixed in the query-composition layer. Changing sort order or relevance weights does not make mismatched scopes compatible.
Legacy query errors · Windows Search SQL overview · WHERE and scope predicates
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