Postgres Partial Indexes on Email Address Domains
Improve query performance for email domain searches using PostgreSQL partial indexes to avoid full table scans
Partial indexes in PostgreSQL dramatically improve query performance for searches on specific email domains. Standard indexes may not help with wildcard searches, but a partial index targeting a particular domain can reduce query times by avoiding full table scans. Practical examples and execution plans illustrate the speedup, and partial indexes are best for data distributions that remain stable over time.