Production query plans without production data

Production query plans without production data

In the previous article we covered how the PostgreSQL planner reads pg_class and pg_statistic to ...概要を表示 In the previous article we covered how the PostgreSQL planner reads pg_class and pg_statistic to estimate row counts, choose join strategies, and decide whether an index scan is worth it. The message was clear: when statistics are wrong, everything else goes with it. Streaming replication provides bit-to-bit replication, so all replicas share the same statistics with primary server. But there was

• PostgreSQL
• あとで読む
• db
• statistics
• database
• data