Hello all
I have been studying the rule system in Postgres. I understand that
the original query tree is the input at the rewrite, and then this
query tree is modified by the rewrite in case that there is a rule.
SQL query ----> Parser ----> Rewrite ----> Planner ----> Executor ^^^^ ^^^^
Query New Query tree tree
I would like to know how the rewrite detects that a rule in a table
exists, and if it possible you indicate me where in the source code
it's implemented. Any comments are welcome, thanks in advance.
Juan P. Espino