Vaibhav Kaushal wrote: > I am going through the Executor code and come across the following terms > quite often. Can someone tell me what do they mean (in a few (may be a > couple of) sentences)? > > 1. Scan State > 2. Plan State > 3. Tuple Projection > 4. EState > 5. Qual > 6. Expression > > They sound quite ambiguous in the source code, specially when some of them > already have terms which have multiple meanings.
Have you read src/backend/executor/README? It is hard to explain what these mean without understanding the executor. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
