The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/9.6/static/sql-refreshmaterializedview.html
Description:
In the description of the CONCURRENTLY parameter (3rd line/paragraph, the
statement employs double negation which makes it hard to read and
understand.
"This option may not be used when the materialized view is not already
populated."
I guess the author would want to mean:
"This option may only be used on a populated materialized view."?
Your clarification is much appreciated.