The PostgreSQL Query Planner
Why does my query need a plan, anyway?
Presented by:
Robert Haas
Robert Haas is a PostgreSQL major contributor and committer. PostgreSQL features which he has authored or coauthored include unlogged tables, fast-path locking, index-only scans, and parallel query. PostgreSQL features written by others which he has reviewed and committed include partitioning, logical decoding, event triggers, and foreign tables. He works at EnterpriseDB as VP, Chief Database Scientist.
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Sequential scan vs. index scan vs. bitmap index scan vs. index-only scan. Join strategies. Join reordering. Using EXPLAIN. Row count and cost estimation. Things the query planner doesn't understand. Things that are nearly always slow. What's new in query planning in recent PostgreSQL releases? Upcoming features and future work.
- Date:
- 2019 February 14 - 14:00
- Duration:
- 45 min
- Room:
- Ballroom 3
- Conference:
- PGConf India, 2019
- Language:
- Track:
- Database Engine Developer
- Difficulty:
- Intermediate
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- Start Time:
- 2019 February 14 14:00
- Room:
- Ballroom 4
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- Start Time:
- 2019 February 14 14:00
- Room:
- Ballroom 1