| From: | Rick Vernam <rickv(at)hobi(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | select statement details |
| Date: | 2008-01-20 17:46:55 |
| Message-ID: | 200801201146.56286.rickv@hobi.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
I'm trying to determine if a select statement:
1 - causes execution of a Volatile function
- or -
2 - causes execution of a nextval function (same/similar as #1 above?)
from within tcop / postgres.c ??
Things like QueryIsReadOnly imply that select nextval('some_sequence') are
read-only ... which is not read-only in the sense that the database is in a
different state after the nextval runs.
I've been looking through PortalDesc & NodeTag, but haven't been able to find
anything...
suggestions?
If nothing exists, I'd need to create something.
Any suggestions where to start?
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