Collecting table statistics allows Trino’s cost-based optimizer to make informed decisions about join orders, filter pushdown, and partition pruning, resulting in better performance.
You can use the ANALYZE command to collect statistics for Hive or Iceberg tables:
ANALYZE sales;Collecting statistics on wide tables can be taxing on resources. We recommend specifying a subset of columns that are used in joins, in filters, or in grouping operations.
This is another helpful command. It displays current statistics for a table to verify if statistics are up to date.
show stats for table_name;