Martin Marques escribió: > Is the value measured in some scale, or does it depend on something > internal? What does 1000 mean? 1000 histogram and MCV entries, and also a larger sample: >> Increasing the target also increases the number of rows that ANALYZE >> samples to prepare the stats, so you should theoretically get more >> accurate stats for the other columns too, even though they'll still get >> boiled down to the same array lengths as before. How larger is the sample, I don't know. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.