Hi all, I am new to postgresql. I am currently doing research to optimize the query performance of RDBMS, specifically postgresql. Hence, I am currently reading out the code to understand the implementation of various query evaluation algorithm in postgresql.
Currently, I am investigating the nested loop join algorithm in nodeNestloop.c. After reading the code, my understanding is that it performs simple nested loop join (not block nested loop join). Is this true? Does postgresql support block nested loop join? If it does, where is it? I might miss some buffering/caching mechanism. I appreciate any helps/advice. Regards, Bramandia R.
