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This idea would be much more usefull if control breaks would be added
example
FOR-EACH READ MYFILE;
Total-DS(TTLDS);
DTL-DS(DTLDS);
CTLBREAKS;
CUSTNO *L2;
ORDERNO *L1;
ENDCTLBREAKS;
ON *TTL2;
DSPLY 'total ='+ TTLDS.CUSTNO +':'+%EDITC(custamount:'J');
ENDTTL1;
ON *DTLL_L1;
custamount += DTLDS.amount ;
ENDDTL1;
ENDFOREACH;
IBM does not intend to provide a solution to this request at this time, so it is being closed.
Extending FOR-EACH to process the records in a file does not align with the strategy for IBM's future investment regarding I/O. RPG programmers are encouraged to use embedded SQL for I/O to database files.
IBM has received the requirement and is evaluating it. IBM will provide a response after evaluation is complete.
The CEAC has reviewed this requirement and recommends that IBM view this as a MEDIUM priority requirement that should be addressed. Adding this functionality would bring RPG in line with many other world leading languages. However, we have voted medium because you can code around the issue and we would like IBM to focus on other priorities at this time
Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a crucial role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community and has therefore reviewed your RFE.
To find out how CEAC help to shape the future of IBM i, see CEAC @ ibm.biz/BdYSYj and the article "The Five Hottest IBM i RFEs Of The Quarter" at ibm.biz/BdYSZT
Therese Eaton – CEAC Program Manager, IBM
The CAAC has reviewed this requirement and recommends that IBM not implement this request. There is no value -- the alternatives are acceptable.
Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.
For more information about CAAC, see www.common.org/caac
Nancy Uthke-Schmucki - CAAC Program Manager
I've posted something similar (i.e. idiomatic looping syntax). The request was declined.
@pnicolay - Fetching into an array gets you part of the way there, certainly. But if you are working with a large data set that could be larger than the array size, then you need to perform multiple fetches in a loop. The net result being that you have an outer loop for fetching from the cursor, and an inner loop for processing the array.
My thought was that you could collapse both these loops into a single statement. Though now I think about it a bit, this would probably be messy syntax, as you'd have control flow statements within an EXEC SQL statement (presumably).
You can fetch an SQL resultset into an array and use that in a FOR-EACH... so it is already supported.
For native IO I would rather suggest For-Each MyDS in %Read(MyFile) which more closely matches the idea of For-Each.
But why still invest in native IO... put the developer resources/money in SQL.
This sounds great. I'd love it if it could also be extended to working with embedded SQL queries (but maybe that deserves its own RFE).