Hi ,I am a PhD student searching in query optimization. I want to access the information about queries and statistics. Especially, I am interested in finding out how I can collect the history information (user, when, query, query_plan) from postgreqsl. Also, I wonder if there is a plan-table in postgresql than I can access, and I can access it?. I appreciate if you guide me in getting the mentioned information that are necessary for my research.
Best,
Moohanad
