The old RelationClearRelation function did different things depending
on the arguments and circumstances. It could:
a) remove the relation completely from relcache (rebuild == false),
b) mark the entry as invalid (rebuild == true, but not in xact), or
c) rebuild the entry (rebuild == true).
Different callers used it for different purposes, and often assumed a
particular behavior, which was confusing. Split it into three
different functions, one for each of the above actions (one of them,
RelationInvalidateRelation, was already added in commit e6cd857726).
Move the responsibility of choosing the action and calling the right
function to the callers.
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://www.postgresql.org/message-id/9c9e8908-7b3e-4ce7-85a8-00c0e165a3d6%40iki.fi
This directory contains the source code distribution of the PostgreSQL
database management system.
PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
Heikki Linnakangas
2b9b8ebbf8