Majid,
You've got a good part of it. The DB doesn't actually do a precompile & all
that, but the idea is straight. In a nutshell Oracle:
1: checks the statement for syntax errors
2: checks to see if the objects (tables & views) exist
3: checks to see if you have access rights on the objects referenced
4: check to see if the column names are right
5: builds and evaluates the possible data access paths, it has to choose one
and only one At this point we're into Pcode.
6: If you requested a 'group by' or 'order by' in the statement a temporary
table will be created & the data buffered for a burst delivery
OR else the data is sent record by record as they are qualified.
Dick Goulet
____________________Reply Separator____________________
Author: Majid Kazemi <[EMAIL PROTECTED]>
Date: 3/15/2001 12:02 PM
Hi guys:
I need some clarification on how Oracle complie a statement (sql or pl
Sql).. I believe it first precompile then compile and finally execute. Also
how Oracle will return the query result. Does it return it as a stream? Or
it save it somewhere in ( example:a temp table ) before return it to client.
Your help will highly be appreciated.
Thanks;
Majid Kazemi
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