Unconventional PostgreSQL Optimizations
18 days ago
- #Indexing
- #PostgreSQL
- #Database Optimization
- PostgreSQL unconventional optimization techniques.
- Use `constraint_exclusion` to avoid full table scans when queries violate check constraints.
- Function-based indexes can optimize queries by indexing only necessary parts of data, reducing index size.
- Virtual generated columns in PostgreSQL 18+ help maintain consistency in expressions for indexing.
- Hash indexes can enforce uniqueness more efficiently than B-Tree indexes for large values.
- Exclusion constraints with Hash indexes provide an alternative to unique constraints.
- Limitations of Hash indexes include no foreign key references and issues with `INSERT ... ON CONFLICT`.