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)

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