Re: SQL code to find the longest line

One thing, Erick, those SQL statements don't need to be run Execute
Immediate, you get better performance just running the statement itself:

exec sql DROP ALIAS QTEMP/AA;
exec sql CREATE ALIAS QTEMP/AA FOR QTEMP/DISP(DISP);

But using embedded SQL, you need to "Select/Into/" some host variable. It
has to return one row only, but your statement does that.

exec sql SELECT MAX( LENGTH( TRIM(DISP) ) ) INTO :MyVar FROM QTEMP/AA

Where after executed, MyVar should have the value of the length of the
longest line.






On 10/23/12 7:48 PM, Erick Garske wrote:

I have a SQLPRGLE program compiled to a target release of V5R4M0
that works correctly in V7R1M0, but throws a SQL exception when
processing the prepare statement. The purpose of the
code is to simply find the longest line in the file.

/ Eval cmdSQL = 'DROP ALIAS QTEMP/AA';
/ exec sql Execute Immediate :cmdSQL;
/
/ Eval cmdSQL = 'CREATE ALIAS QTEMP/AA FOR QTEMP/DISP(DISP)';
/ exec sql Execute Immediate :cmdSQL;
/
/ cmdSQL = 'SELECT MAX( LENGTH( TRIM(DISP) ) ) FROM QTEMP/AA';
/ exec sql prepare s1 from :cmdSQL;

SQL values after processing the prepare statement:

sqlcod = 204
sqlerm =
....5...10...15...20...25...30...35...40...45...50...55...60
' *ALL *N MEM '
' '

Does anyone know if there is an issue with the above code?

--
This is the RPG programming on the IBM i / System i (RPG400-L) mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.