Unverified50% confidenceFactExact time
PostgreSQL's regular CREATE INDEX locks the target table and blocks writes; CREATE INDEX CONCURRENTLY avoids holding the lock for a long time through a multi-phase scan and wait mechanism, but it cannot be executed inside a transaction block, a failure leaves an invalid index that must be cleaned up manually, and it takes longer.
1
Sources
50%
Confidence
Long-term
Relevance
10/18/2026
First Seen
Sources
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