UNION ALL performance improvement: Business analytics often involves time-series data, which is data generated or aggregated daily, weekly, monthly or at other intervals. By storing time-series data in separate tables—one table for each time interval—and using a UNION ALL view over those tables, you can avoid potentially costly table updates. Amazon Redshift now runs UNION ALL queries up to 10 times faster if they involve joins, and up to 2 times faster if they don’t involve any joins. This performance improvement is automatic and requires no action on your part and is available in version 1.0.1057 and above. For more information about UNION ALL views and time-series tables, see Using Time-Series Tables in the Amazon Redshift Database Developer Guide.