Re: Embedded SQL

[Jerry Adams <jerry@xxxxxxxxxxxxxxx>]

It seems reasonable that Fetch would be expensive, and probably is.  But 
for a few thousand records it's hardly noticeable.

It just so happens that I wrote a program today tat uses Fetch over a 
file with > 1500 records.  Finished in the blink of an eye.  And, since 
I had no idea how many records there would be in the table, it wasn't 
optimized for a set number of rows.


	* Jerry C. Adams
*IBM System i Programmer/Analyst
B&W Wholesale Distributors, Inc.* *
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MKirkpatrick@xxxxxxxxxxxxxxxxx wrote:
> The following embedded SQL is going to return only one record in the 
> result set.  Do I need to use CURSOR logic (declare , open, fetch, close) 
> to get the values into my variables as shown.  Or, is there another way 
> (VALUES INTO, etc.).   I ask because it seems that using the CURSOR logic 
> is very expensive.  I need to execute this code several thousand times. 
> Thanks.
>
>        exec sql
>         declare c3 cursor for
>             SELECT office, chart,
>                 sum(value(dec((dec((substr(undata,4,7)),7,0)) / 100),7,2))
>             FROM NHISxx
>             WHERE  rectyp = 'PA' and office = :svOffice and chart = 
> :svChart
>                 and idate(crtdat,'*YMD') between :pStrDate and :pEndDate
>             GROUP BY office, chart;
>
>        exec sql
>         open c3;
>
>        exec sql
>         fetch next from c3
>          into :hsOffice,
>               :hsChart,
>               :hsPmtAmt;
>
>        exec sql
>         close c3;   
>
>
>
>
>
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>