I am checking for existence of record in a table cond = db.mytable(id=someid) if not cond : do something
This works fine. The query executed selects *all* columns and adds LIMIT 1 OFFSET 0; The LIMIT and OFFSET are OK. Since I want to just check for existence of a record, how can I rewrite this so that we have only the id column selected? I am trying to avoid a table scan and have just an index scan. -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
