diff --git a/doc/src/sgml/pgstatstatements.sgml b/doc/src/sgml/pgstatstatements.sgml index 70b28a92c1..b135727983 100644 --- a/doc/src/sgml/pgstatstatements.sgml +++ b/doc/src/sgml/pgstatstatements.sgml @@ -460,15 +460,21 @@ - As a rule of thumb, queryid values can be assumed to be - stable and comparable only so long as the underlying server version and - catalog metadata details stay exactly the same. Two servers - participating in replication based on physical WAL replay can be expected - to have identical queryid values for the same query. - However, logical replication schemes do not promise to keep replicas - identical in all relevant details, so queryid will - not be a useful identifier for accumulating costs across a set of logical - replicas. If in doubt, direct testing is recommended. + Two servers participating in replication based on physical WAL replay can + be expected to have identical queryid values for + the same query. However, logical replication schemes do not promise to + keep replicas identical in all relevant details, so + queryid will not be a useful identifier for + accumulating costs across a set of logical replicas. + If in doubt, direct testing is recommended. + + + + Generally, it can be assumed that queryid values + are stable between minor version releases of PostgreSQL, + providing that instances are running on the same machine architecture and + the catalog metadata details match. Compatibility will only be broken + between minor versions as a last resort.