Mohammed Shakir wrote: > > I am working on a database optimization project. My Shared pool is > filled with SQL like > > select 0 from dual; > select 1/1 from dual; > select 1 - 1/(2 + 2) from dual; > > I tried to use the bind variables to minimize the literal SQL. However > I need a different SQL script for each case. > > select :b1 from dual; > select :b1/:b2 from dual; > select :b1 - :b2/(:b3 + :b4) from dual; > > first one will handle all cases for b1 from 0 to any number which is > good. And second sql will handle all the cases for any number for b1 > and b2. So I do reduce the literal SQL. However, I need to know ahead > of time what type of data I am calculating and then use the appropriate > SQL. > > I think the easy solution would be to use arithmetic. That is to pass > the string like ( 1 + 1 / (2 -2) ) to some function that can return me > the result of this sting. So I would not be using SQL script, to > minimize SQL execution, sys.dual contention or literal SQL filling > shared pool and causing both library cache and shared pool. Not to > mention saving in CPU processing by not parsing SQL scripts. > > Anybody, aware of such function in PL/SQL? Is there any other way to do > calculations other than 'select 1 + 1 from dual' ? > > I would really appreciate if you could let me know. > > Thanks > > Mohammed Shakir > > ===== > Mohammed Shakir > CompuSoft, Inc. > 11 Heather Way > East Brunswick, NJ 08816-2825 > (732) 672-0464 (Cell) > (732) 257-6001 (Home) >
Mohammed, Don't you think, before starting with a PL/SQL function of death, that it *might* be easier to check the code and see where these statements, which are unlikely to be functional requirements, are used? Rewriting the PL/SQL code around them is probably the most efficient way to get rid of them. -- Regards, Stephane Faroult Oriole Software -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Stephane Faroult INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
