d4673c2e91
When failures are sparse (<1%), filtering by failure status on the runs
page required scanning millions of success rows. Add a partial index on
v2_job_completed (workspace_id, completed_at DESC) WHERE status IN
('failure', 'canceled') and switch ORDER BY to completed_at when
filtering failures, so Postgres walks the small partial index directly.
Benchmarked at 5.2M rows / 1% failure rate:
- LIMIT 30: 800ms -> 0.4ms (2000x faster)
- LIMIT 1000: 550ms -> 21ms (26x faster)
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2 lines
60 B
SQL
2 lines
60 B
SQL
DROP INDEX IF EXISTS ix_v2_job_completed_failure_workspace;
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