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Interesting approach. One way I can minimize impact is my application I can break out SQL key words to “safe/harmless”, “check”, “and just no”. The IBM API does tend to return more than just strings of SQL commands that the user issues (qsys2 calls and such) but if I order the strings properly I can hopefully minimize the impact of any method I choose to use.



On Jan 25, 2018, at 10:38 AM, dlclark@xxxxxxxxxxxxxxxx wrote:

"RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx> wrote on 01/25/2018 09:18:49
AM:
I am searching strings for SQL keywords and table names; these are
coming back from one of the ODBC hooks so I need to be quick. Is
there a means to search a string, after apply upper case function,
that works like matching how SQL IN works?

I really don’t want to resort to a select construct comparing in
order, instead trying to filter against an array or similar.


I wrote a service procedure that compares test against a
comma-separated list like the SQL IN operator does. I can't testify as to
the speed of it, though. Seems to work well for me.


*========================================================================*
* This procedure determines if a needle is found in a haystack, which is
*
* represented by a comma-separated list of possible matches. *

*========================================================================*
P GenUtl_InList B export
D PI n
D pNeedle 50a const varying(2)
D pHaystack 3000a const varying(2)

*------------------------------------------------------------------------*
D iHaystack s 3002a varying(2)
iHaystack = %trim(pHaystack); // make sure haystack is trimmed
iHaystack = %xlate( GenUtl_lower: GenUtl_UPPER: pHaystack );
if (%subst(iHaystack:1:1) <> ','); // if no starting separator
iHaystack = ',' + iHaystack; // put one there
endif;
if (%subst(iHaystack:%len(iHaystack):1) <> ','); // if no ending
separator
iHaystack += ','; // put one there
endif;
return (%scan( ','+%xlate(GenUtl_lower: GenUtl_UPPER: %trim(pNeedle))+
','
: iHaystack ) > *zero); // indicate if found

*------------------------------------------------------------------------*
P GenUtl_InList E

*========================================================================*


Sincerely,

Dave Clark
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