Hi,First sorry for my bad English :D.I'm new in PostgreSQL and database .Now i'm researching about statistic correlation .I want to make a example with the table -assume that I have tbl_test table and two column - id & name - and do something to get correlation of a column is near 0 (zero).What step can i do ? Thanks for your support :) -- View this message in context: http://postgresql.1045698.n5.nabble.com/Correlation-in-pg-stats-tp5733524.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general