feat(schema-compiler): support string, time, and boolean measure types in pre-aggregations #10290
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…s in pre-aggregations - Add support for string, time, and boolean measure types in pre-aggregations - Use MAX aggregation function for non-numeric measures instead of SUM - Modify aggregateOnGroupedColumn in BaseQuery.js to handle string/time/boolean types - Update aggregationsColumns in PreAggregations.ts with string/time/boolean mappings - Add comprehensive unit tests for string, time, and boolean measure pre-aggregations Fixes cube-js#7896
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Co-authored-by: zubairov <56208+zubairov@users.noreply.github.com>
…c-types Fix pre-aggregation test to use correct PostgresQuery API
pnedelko
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Jan 8, 2026
packages/cubejs-schema-compiler/test/unit/pre-agg-string-time-measures.test.ts
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…measures.test.ts Co-authored-by: Pavel Nedelko <pnedelko@gmail.com>
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Description
This PR fixes issue #7896 by adding support for string, time, and boolean measure types in pre-aggregations.
Problem
When using pre-aggregations with calculated measures of non-numeric types (string, time, or boolean), the pre-aggregation table is created correctly, but the SELECT clause incorrectly uses the SUM function on these non-numeric fields, which is invalid SQL.
Solution
Changes
Testing
Added 5 comprehensive unit tests:
Backward Compatibility
✓ Fully backward compatible
✓ No breaking changes
✓ Existing numeric measure types continue to work as before
Fixes #7896