Summary
Implement UNION ALL support for compatible SELECT queries.
Why
Set operations are roadmap items and unlock many analytical query flows.
Tasks
- Add parser support for
UNION ALL
- Extend planning/execution to combine row streams from both subqueries
- Validate column count/type compatibility for unioned queries
- Add integration tests
Acceptance Criteria
UNION ALL executes for compatible SELECTs- Incompatible schemas return clear errors
- Existing non-UNION queries remain unaffected
Summary
Implement
UNION ALLsupport for compatibleSELECTqueries.Why
Set operations are roadmap items and unlock many analytical query flows.
Tasks
UNION ALLAcceptance Criteria
UNION ALLexecutes for compatible SELECTs