https://www.postgresql.org/docs/12/sql-createstatistics.html contains this example command:
CREATE STATISTICS s2 (mcv) ON (a, b) FROM t2; But that produces: psql: ERROR: only simple column references are allowed in CREATE STATISTICS I think the parentheses around (a, b) just need to be removed. P.S. I think the fact that we print "psql: " before the ERROR here is useless clutter. We didn't do that in v11 and prior and I think we should kill it with fire. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
