Hi Which equivalence rule from those are listed in email's attachment are implemented in postgresql? where are them? Thanks equivalenceRules.pdf Description: Adobe PDF document -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription:
where means, which function or which part of source code. I want to use that(function or part of source code), to produce the equivalence (based on equivalence rules in attachment) Relational Algebra for a given SQL query(Relational Algebra).
Hi My question is: Does PostgreSQL implements equivalence rules(from those are listed in email's attachment)? Which function or which part of source code(in PostgreSQL ) implements the equivalence rules? I think, this should be implemented in query optimization part of PostgreSQL, but which rule